/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/Mono4_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 12:49:20,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 12:49:20,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 12:49:20,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 12:49:20,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 12:49:20,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 12:49:20,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 12:49:20,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 12:49:20,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 12:49:20,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 12:49:20,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 12:49:20,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 12:49:20,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 12:49:20,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 12:49:20,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 12:49:20,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 12:49:20,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 12:49:20,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 12:49:20,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 12:49:20,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 12:49:20,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 12:49:20,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 12:49:20,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 12:49:20,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 12:49:20,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 12:49:20,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 12:49:20,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 12:49:20,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 12:49:20,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 12:49:20,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 12:49:20,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 12:49:20,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 12:49:20,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 12:49:20,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 12:49:20,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 12:49:20,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 12:49:20,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 12:49:20,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 12:49:20,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 12:49:20,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 12:49:20,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 12:49:20,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 12:49:20,972 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 12:49:20,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 12:49:20,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 12:49:20,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 12:49:20,974 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 12:49:20,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 12:49:20,974 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 12:49:20,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 12:49:20,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 12:49:20,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 12:49:20,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 12:49:20,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 12:49:20,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 12:49:20,976 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 12:49:20,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 12:49:20,976 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 12:49:20,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 12:49:20,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 12:49:20,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 12:49:20,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 12:49:20,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:49:20,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 12:49:20,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 12:49:20,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 12:49:20,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 12:49:20,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 12:49:20,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 12:49:20,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 12:49:20,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 12:49:21,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 12:49:21,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 12:49:21,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 12:49:21,304 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 12:49:21,306 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 12:49:21,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/Mono4_1.c [2021-05-02 12:49:21,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97013208f/30e60ea9ae354de79cc640ca87096de8/FLAG35e00de8e [2021-05-02 12:49:21,865 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 12:49:21,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono4_1.c [2021-05-02 12:49:21,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97013208f/30e60ea9ae354de79cc640ca87096de8/FLAG35e00de8e [2021-05-02 12:49:22,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97013208f/30e60ea9ae354de79cc640ca87096de8 [2021-05-02 12:49:22,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 12:49:22,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 12:49:22,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 12:49:22,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 12:49:22,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 12:49:22,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:49:22" (1/1) ... [2021-05-02 12:49:22,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e05c117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:49:22, skipping insertion in model container [2021-05-02 12:49:22,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:49:22" (1/1) ... [2021-05-02 12:49:22,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 12:49:22,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 12:49:22,513 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono4_1.c[311,324] [2021-05-02 12:49:22,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:49:22,534 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 12:49:22,577 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono4_1.c[311,324] [2021-05-02 12:49:22,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:49:22,608 INFO L208 MainTranslator]: Completed translation [2021-05-02 12:49:22,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:49:22 WrapperNode [2021-05-02 12:49:22,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 12:49:22,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 12:49:22,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 12:49:22,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 12:49:22,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:49:22" (1/1) ... [2021-05-02 12:49:22,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:49:22" (1/1) ... [2021-05-02 12:49:22,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:49:22" (1/1) ... [2021-05-02 12:49:22,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:49:22" (1/1) ... [2021-05-02 12:49:22,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:49:22" (1/1) ... [2021-05-02 12:49:22,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:49:22" (1/1) ... [2021-05-02 12:49:22,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:49:22" (1/1) ... [2021-05-02 12:49:22,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 12:49:22,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 12:49:22,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 12:49:22,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 12:49:22,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:49:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:49:22,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 12:49:22,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 12:49:22,723 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 12:49:22,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 12:49:22,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 12:49:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 12:49:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 12:49:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 12:49:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 12:49:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 12:49:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 12:49:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 12:49:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 12:49:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 12:49:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 12:49:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 12:49:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 12:49:23,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 12:49:23,002 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 12:49:23,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:49:23 BoogieIcfgContainer [2021-05-02 12:49:23,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 12:49:23,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 12:49:23,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 12:49:23,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 12:49:23,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 12:49:22" (1/3) ... [2021-05-02 12:49:23,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de17683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:49:23, skipping insertion in model container [2021-05-02 12:49:23,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:49:22" (2/3) ... [2021-05-02 12:49:23,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de17683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:49:23, skipping insertion in model container [2021-05-02 12:49:23,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:49:23" (3/3) ... [2021-05-02 12:49:23,011 INFO L111 eAbstractionObserver]: Analyzing ICFG Mono4_1.c [2021-05-02 12:49:23,015 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 12:49:23,036 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 12:49:23,060 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 12:49:23,092 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 12:49:23,093 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 12:49:23,093 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 12:49:23,093 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 12:49:23,093 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 12:49:23,093 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 12:49:23,093 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 12:49:23,093 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 12:49:23,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 12:49:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 12:49:23,118 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:23,119 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:23,119 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:23,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:23,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1325153485, now seen corresponding path program 1 times [2021-05-02 12:49:23,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:23,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507479596] [2021-05-02 12:49:23,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:23,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:49:23,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:23,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507479596] [2021-05-02 12:49:23,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507479596] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:49:23,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:49:23,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 12:49:23,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304809878] [2021-05-02 12:49:23,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 12:49:23,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:23,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 12:49:23,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 12:49:23,450 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:23,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:23,527 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-05-02 12:49:23,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 12:49:23,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 12:49:23,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:23,535 INFO L225 Difference]: With dead ends: 32 [2021-05-02 12:49:23,536 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 12:49:23,540 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 12:49:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 12:49:23,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 12:49:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-05-02 12:49:23,576 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2021-05-02 12:49:23,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:23,577 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-05-02 12:49:23,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-05-02 12:49:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 12:49:23,579 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:23,579 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:23,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 12:49:23,580 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:23,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:23,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1315918275, now seen corresponding path program 1 times [2021-05-02 12:49:23,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:23,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824085545] [2021-05-02 12:49:23,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:23,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:49:23,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:23,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824085545] [2021-05-02 12:49:23,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824085545] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:49:23,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:49:23,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 12:49:23,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261943722] [2021-05-02 12:49:23,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 12:49:23,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:23,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 12:49:23,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 12:49:23,728 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:23,821 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-05-02 12:49:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 12:49:23,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 12:49:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:23,823 INFO L225 Difference]: With dead ends: 22 [2021-05-02 12:49:23,823 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 12:49:23,824 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 12:49:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 12:49:23,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 12:49:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-02 12:49:23,830 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2021-05-02 12:49:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:23,830 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-02 12:49:23,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-02 12:49:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 12:49:23,831 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:23,831 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:23,831 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 12:49:23,831 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:23,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:23,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1372110560, now seen corresponding path program 1 times [2021-05-02 12:49:23,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:23,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628056561] [2021-05-02 12:49:23,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:23,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:49:23,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:23,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628056561] [2021-05-02 12:49:23,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628056561] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:23,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853941871] [2021-05-02 12:49:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:23,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 12:49:23,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:24,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:24,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:49:24,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853941871] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:24,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:24,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-02 12:49:24,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211479916] [2021-05-02 12:49:24,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 12:49:24,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:24,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 12:49:24,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 12:49:24,083 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:24,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:24,242 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-05-02 12:49:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 12:49:24,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-02 12:49:24,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:24,244 INFO L225 Difference]: With dead ends: 24 [2021-05-02 12:49:24,244 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 12:49:24,244 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 118.8ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 12:49:24,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 12:49:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 12:49:24,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-05-02 12:49:24,249 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2021-05-02 12:49:24,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:24,249 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-05-02 12:49:24,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-05-02 12:49:24,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 12:49:24,250 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:24,250 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:24,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 12:49:24,465 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:24,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:24,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1002491197, now seen corresponding path program 2 times [2021-05-02 12:49:24,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:24,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619911398] [2021-05-02 12:49:24,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:24,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 12:49:24,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:24,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619911398] [2021-05-02 12:49:24,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619911398] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:49:24,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:49:24,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 12:49:24,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736680060] [2021-05-02 12:49:24,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 12:49:24,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:24,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 12:49:24,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 12:49:24,526 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:24,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:24,576 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-05-02 12:49:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 12:49:24,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 12:49:24,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:24,578 INFO L225 Difference]: With dead ends: 24 [2021-05-02 12:49:24,578 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 12:49:24,578 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 12:49:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 12:49:24,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-05-02 12:49:24,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-05-02 12:49:24,584 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2021-05-02 12:49:24,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:24,585 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-05-02 12:49:24,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-05-02 12:49:24,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 12:49:24,586 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:24,586 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:24,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 12:49:24,586 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:24,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:24,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1870563496, now seen corresponding path program 1 times [2021-05-02 12:49:24,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:24,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57347939] [2021-05-02 12:49:24,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:24,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 12:49:24,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:24,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57347939] [2021-05-02 12:49:24,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57347939] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:24,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630761252] [2021-05-02 12:49:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:24,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 12:49:24,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:24,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:24,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:24,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:24,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:49:24,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630761252] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:24,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:24,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2021-05-02 12:49:24,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925738206] [2021-05-02 12:49:24,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 12:49:24,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:24,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 12:49:24,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-05-02 12:49:24,847 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:25,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:25,119 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2021-05-02 12:49:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 12:49:25,120 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-02 12:49:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:25,120 INFO L225 Difference]: With dead ends: 36 [2021-05-02 12:49:25,121 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 12:49:25,122 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 282.1ms TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-05-02 12:49:25,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 12:49:25,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-05-02 12:49:25,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-05-02 12:49:25,128 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 17 [2021-05-02 12:49:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:25,128 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-05-02 12:49:25,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-05-02 12:49:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 12:49:25,129 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:25,129 INFO L523 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:25,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:25,349 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:25,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:25,350 INFO L82 PathProgramCache]: Analyzing trace with hash 553994512, now seen corresponding path program 2 times [2021-05-02 12:49:25,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:25,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637080077] [2021-05-02 12:49:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:25,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 12:49:25,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:25,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637080077] [2021-05-02 12:49:25,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637080077] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:25,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040311511] [2021-05-02 12:49:25,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:25,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:49:25,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:25,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 12:49:25,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:25,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:25,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:25,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:25,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:25,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:25,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 12:49:25,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040311511] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:25,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:25,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 12:49:25,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310039167] [2021-05-02 12:49:25,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 12:49:25,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:25,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 12:49:25,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 12:49:25,613 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:25,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:25,756 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-05-02 12:49:25,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 12:49:25,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-05-02 12:49:25,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:25,758 INFO L225 Difference]: With dead ends: 32 [2021-05-02 12:49:25,758 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 12:49:25,758 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 138.4ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:49:25,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 12:49:25,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-02 12:49:25,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:25,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-02 12:49:25,764 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2021-05-02 12:49:25,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:25,764 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-02 12:49:25,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:25,764 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-02 12:49:25,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 12:49:25,765 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:25,765 INFO L523 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:25,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:25,982 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:25,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:25,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1308846125, now seen corresponding path program 3 times [2021-05-02 12:49:25,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:25,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020921404] [2021-05-02 12:49:25,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:26,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 12:49:26,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:26,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020921404] [2021-05-02 12:49:26,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020921404] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:26,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007312] [2021-05-02 12:49:26,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:26,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 12:49:26,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:26,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 12:49:26,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:26,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:26,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:26,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:26,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:26,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:26,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:26,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:26,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:26,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-02 12:49:26,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007312] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:26,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:26,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-05-02 12:49:26,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841942268] [2021-05-02 12:49:26,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 12:49:26,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:26,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 12:49:26,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-05-02 12:49:26,306 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:26,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:26,736 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2021-05-02 12:49:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 12:49:26,737 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-05-02 12:49:26,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:26,738 INFO L225 Difference]: With dead ends: 42 [2021-05-02 12:49:26,738 INFO L226 Difference]: Without dead ends: 31 [2021-05-02 12:49:26,739 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 387.1ms TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2021-05-02 12:49:26,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-02 12:49:26,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-05-02 12:49:26,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:26,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-05-02 12:49:26,745 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-05-02 12:49:26,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:26,746 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-05-02 12:49:26,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:26,746 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-05-02 12:49:26,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 12:49:26,747 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:26,747 INFO L523 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:26,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:26,973 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:26,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:26,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1358454501, now seen corresponding path program 4 times [2021-05-02 12:49:26,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:26,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481091711] [2021-05-02 12:49:26,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:27,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 12:49:27,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:27,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481091711] [2021-05-02 12:49:27,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481091711] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:27,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387510628] [2021-05-02 12:49:27,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:27,127 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:49:27,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:27,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 12:49:27,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:27,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 12:49:27,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387510628] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:27,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:27,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-02 12:49:27,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255642974] [2021-05-02 12:49:27,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 12:49:27,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:27,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 12:49:27,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 12:49:27,245 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:27,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:27,435 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-05-02 12:49:27,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 12:49:27,435 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-05-02 12:49:27,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:27,436 INFO L225 Difference]: With dead ends: 40 [2021-05-02 12:49:27,436 INFO L226 Difference]: Without dead ends: 30 [2021-05-02 12:49:27,437 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 184.8ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:49:27,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-02 12:49:27,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-02 12:49:27,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:27,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-02 12:49:27,443 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 27 [2021-05-02 12:49:27,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:27,443 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-02 12:49:27,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:27,444 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-02 12:49:27,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 12:49:27,445 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:27,445 INFO L523 BasicCegarLoop]: trace histogram [9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:27,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 12:49:27,654 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:27,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:27,654 INFO L82 PathProgramCache]: Analyzing trace with hash 649589826, now seen corresponding path program 5 times [2021-05-02 12:49:27,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:27,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286732794] [2021-05-02 12:49:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:27,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 35 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 12:49:27,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:27,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286732794] [2021-05-02 12:49:27,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286732794] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:27,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212096551] [2021-05-02 12:49:27,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:27,912 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-05-02 12:49:27,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:27,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 12:49:27,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:27,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:27,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 35 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 12:49:28,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212096551] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:28,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:28,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-05-02 12:49:28,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382626805] [2021-05-02 12:49:28,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 12:49:28,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:28,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 12:49:28,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-02 12:49:28,064 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:28,319 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-05-02 12:49:28,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 12:49:28,320 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-05-02 12:49:28,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:28,321 INFO L225 Difference]: With dead ends: 42 [2021-05-02 12:49:28,321 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 12:49:28,322 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 237.8ms TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-05-02 12:49:28,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 12:49:28,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 12:49:28,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-05-02 12:49:28,328 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 29 [2021-05-02 12:49:28,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:28,329 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-05-02 12:49:28,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:28,329 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-05-02 12:49:28,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 12:49:28,330 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:28,330 INFO L523 BasicCegarLoop]: trace histogram [10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:28,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:28,557 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:28,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:28,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1964530081, now seen corresponding path program 6 times [2021-05-02 12:49:28,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:28,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276634832] [2021-05-02 12:49:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 12:49:28,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:28,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276634832] [2021-05-02 12:49:28,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276634832] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:28,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587917410] [2021-05-02 12:49:28,701 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:28,774 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-05-02 12:49:28,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:28,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 12:49:28,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:28,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 12:49:28,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587917410] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:28,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:28,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2021-05-02 12:49:28,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549740652] [2021-05-02 12:49:28,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 12:49:28,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:28,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 12:49:28,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:49:28,866 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:29,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:29,146 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2021-05-02 12:49:29,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 12:49:29,146 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-05-02 12:49:29,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:29,148 INFO L225 Difference]: With dead ends: 44 [2021-05-02 12:49:29,148 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 12:49:29,149 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 266.8ms TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:49:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 12:49:29,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-05-02 12:49:29,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:29,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-05-02 12:49:29,155 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 31 [2021-05-02 12:49:29,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:29,155 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-05-02 12:49:29,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:29,155 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-05-02 12:49:29,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 12:49:29,156 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:29,156 INFO L523 BasicCegarLoop]: trace histogram [11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:29,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:29,357 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:29,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:29,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1577892548, now seen corresponding path program 7 times [2021-05-02 12:49:29,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:29,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325053141] [2021-05-02 12:49:29,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 12:49:29,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:29,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325053141] [2021-05-02 12:49:29,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325053141] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:29,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789589882] [2021-05-02 12:49:29,515 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:29,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 12:49:29,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:29,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 12:49:29,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789589882] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:29,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:29,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2021-05-02 12:49:29,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38791637] [2021-05-02 12:49:29,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 12:49:29,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:29,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 12:49:29,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-05-02 12:49:29,736 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:30,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:30,045 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-05-02 12:49:30,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 12:49:30,046 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-05-02 12:49:30,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:30,047 INFO L225 Difference]: With dead ends: 46 [2021-05-02 12:49:30,047 INFO L226 Difference]: Without dead ends: 36 [2021-05-02 12:49:30,047 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 305.3ms TimeCoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2021-05-02 12:49:30,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-02 12:49:30,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-05-02 12:49:30,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:30,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-05-02 12:49:30,053 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 33 [2021-05-02 12:49:30,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:30,054 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-05-02 12:49:30,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:30,054 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-05-02 12:49:30,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 12:49:30,055 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:30,055 INFO L523 BasicCegarLoop]: trace histogram [12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:30,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 12:49:30,261 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:30,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:30,262 INFO L82 PathProgramCache]: Analyzing trace with hash 613589209, now seen corresponding path program 8 times [2021-05-02 12:49:30,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:30,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774527326] [2021-05-02 12:49:30,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:30,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 50 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 12:49:30,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:30,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774527326] [2021-05-02 12:49:30,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774527326] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:30,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680829634] [2021-05-02 12:49:30,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:30,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:49:30,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:30,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 12:49:30,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:30,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:30,540 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 50 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 12:49:30,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680829634] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:30,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:30,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2021-05-02 12:49:30,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708566712] [2021-05-02 12:49:30,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 12:49:30,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:30,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 12:49:30,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-02 12:49:30,543 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:30,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:30,931 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2021-05-02 12:49:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 12:49:30,932 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-05-02 12:49:30,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:30,933 INFO L225 Difference]: With dead ends: 48 [2021-05-02 12:49:30,933 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 12:49:30,934 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 386.8ms TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2021-05-02 12:49:30,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 12:49:30,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 12:49:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:30,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-02 12:49:30,940 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 35 [2021-05-02 12:49:30,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:30,940 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-02 12:49:30,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:30,941 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-02 12:49:30,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 12:49:30,942 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:30,942 INFO L523 BasicCegarLoop]: trace histogram [13, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:31,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:31,169 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:31,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:31,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2093582646, now seen corresponding path program 9 times [2021-05-02 12:49:31,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:31,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662953850] [2021-05-02 12:49:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:31,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 55 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 12:49:31,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:31,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662953850] [2021-05-02 12:49:31,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662953850] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:31,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605950130] [2021-05-02 12:49:31,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:31,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-02 12:49:31,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:31,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 12:49:31,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:31,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:31,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:31,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:31,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:31,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:31,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:31,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:31,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:31,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:31,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:31,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-05-02 12:49:31,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605950130] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:31,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:31,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2021-05-02 12:49:31,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058617477] [2021-05-02 12:49:31,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 12:49:31,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:31,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 12:49:31,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-05-02 12:49:31,565 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 21 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:32,322 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2021-05-02 12:49:32,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 12:49:32,322 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-05-02 12:49:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:32,323 INFO L225 Difference]: With dead ends: 58 [2021-05-02 12:49:32,323 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 12:49:32,324 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 770.5ms TimeCoverageRelationStatistics Valid=387, Invalid=1095, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 12:49:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 12:49:32,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-05-02 12:49:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-05-02 12:49:32,331 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 37 [2021-05-02 12:49:32,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:32,331 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-05-02 12:49:32,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:32,332 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-05-02 12:49:32,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 12:49:32,333 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:32,333 INFO L523 BasicCegarLoop]: trace histogram [15, 11, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:32,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 12:49:32,553 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:32,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:32,554 INFO L82 PathProgramCache]: Analyzing trace with hash -907244818, now seen corresponding path program 10 times [2021-05-02 12:49:32,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:32,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153260066] [2021-05-02 12:49:32,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:32,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 84 proven. 132 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 12:49:32,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:32,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153260066] [2021-05-02 12:49:32,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153260066] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:32,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499400854] [2021-05-02 12:49:32,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:32,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:49:32,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:32,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 12:49:32,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:32,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 84 proven. 132 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 12:49:32,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499400854] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:32,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:32,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 12:49:32,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114530659] [2021-05-02 12:49:32,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 12:49:32,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:32,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 12:49:32,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:49:32,896 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:33,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:33,359 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2021-05-02 12:49:33,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 12:49:33,360 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-05-02 12:49:33,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:33,365 INFO L225 Difference]: With dead ends: 56 [2021-05-02 12:49:33,365 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 12:49:33,366 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 453.9ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-02 12:49:33,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 12:49:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-05-02 12:49:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:33,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-05-02 12:49:33,391 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 41 [2021-05-02 12:49:33,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:33,392 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-05-02 12:49:33,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:33,392 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-05-02 12:49:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 12:49:33,393 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:33,393 INFO L523 BasicCegarLoop]: trace histogram [16, 12, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:33,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 12:49:33,594 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:33,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:33,594 INFO L82 PathProgramCache]: Analyzing trace with hash 2130246027, now seen corresponding path program 11 times [2021-05-02 12:49:33,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:33,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973506979] [2021-05-02 12:49:33,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:33,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 91 proven. 156 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 12:49:33,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:33,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973506979] [2021-05-02 12:49:33,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973506979] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:33,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222800531] [2021-05-02 12:49:33,761 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:33,815 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-05-02 12:49:33,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:33,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 12:49:33,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:33,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 91 proven. 156 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 12:49:33,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222800531] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:33,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:33,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 17 [2021-05-02 12:49:33,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087217621] [2021-05-02 12:49:33,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 12:49:33,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:33,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 12:49:33,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-05-02 12:49:33,959 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:34,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:34,410 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2021-05-02 12:49:34,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 12:49:34,411 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-05-02 12:49:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:34,411 INFO L225 Difference]: With dead ends: 58 [2021-05-02 12:49:34,411 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 12:49:34,412 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 458.5ms TimeCoverageRelationStatistics Valid=331, Invalid=539, Unknown=0, NotChecked=0, Total=870 [2021-05-02 12:49:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 12:49:34,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-05-02 12:49:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:34,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-05-02 12:49:34,421 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 43 [2021-05-02 12:49:34,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:34,421 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-05-02 12:49:34,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:34,421 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-05-02 12:49:34,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 12:49:34,422 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:34,422 INFO L523 BasicCegarLoop]: trace histogram [17, 13, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:34,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:34,637 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:34,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:34,638 INFO L82 PathProgramCache]: Analyzing trace with hash 581186792, now seen corresponding path program 12 times [2021-05-02 12:49:34,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:34,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729249242] [2021-05-02 12:49:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:34,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 98 proven. 182 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 12:49:34,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:34,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729249242] [2021-05-02 12:49:34,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729249242] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:34,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700556023] [2021-05-02 12:49:34,833 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:34,898 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-05-02 12:49:34,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:34,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 12:49:34,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:34,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:34,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:35,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:35,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:35,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:35,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:35,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:35,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:35,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:35,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:35,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:35,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:35,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:35,151 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-05-02 12:49:35,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700556023] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:35,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:35,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10] total 25 [2021-05-02 12:49:35,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048685756] [2021-05-02 12:49:35,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 12:49:35,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:35,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 12:49:35,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-05-02 12:49:35,153 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 25 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:36,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:36,103 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2021-05-02 12:49:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 12:49:36,103 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-05-02 12:49:36,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:36,104 INFO L225 Difference]: With dead ends: 68 [2021-05-02 12:49:36,104 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 12:49:36,105 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1027.8ms TimeCoverageRelationStatistics Valid=583, Invalid=1579, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 12:49:36,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 12:49:36,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2021-05-02 12:49:36,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 45 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-05-02 12:49:36,111 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 45 [2021-05-02 12:49:36,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:36,111 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-05-02 12:49:36,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:36,112 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-05-02 12:49:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 12:49:36,113 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:36,113 INFO L523 BasicCegarLoop]: trace histogram [19, 14, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:36,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-05-02 12:49:36,341 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:36,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:36,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1725818144, now seen corresponding path program 13 times [2021-05-02 12:49:36,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:36,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624537288] [2021-05-02 12:49:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:36,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 135 proven. 210 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 12:49:36,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:36,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624537288] [2021-05-02 12:49:36,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624537288] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:36,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458109623] [2021-05-02 12:49:36,586 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:36,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 12:49:36,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:36,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 135 proven. 210 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 12:49:36,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458109623] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:36,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:36,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-05-02 12:49:36,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285270130] [2021-05-02 12:49:36,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 12:49:36,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:36,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 12:49:36,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 12:49:36,826 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:37,395 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2021-05-02 12:49:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 12:49:37,396 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-05-02 12:49:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:37,396 INFO L225 Difference]: With dead ends: 66 [2021-05-02 12:49:37,397 INFO L226 Difference]: Without dead ends: 52 [2021-05-02 12:49:37,397 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 601.2ms TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 12:49:37,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-02 12:49:37,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-05-02 12:49:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2021-05-02 12:49:37,403 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 49 [2021-05-02 12:49:37,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:37,403 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2021-05-02 12:49:37,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:37,403 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2021-05-02 12:49:37,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 12:49:37,404 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:37,404 INFO L523 BasicCegarLoop]: trace histogram [20, 15, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:37,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:37,618 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:37,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:37,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1517001027, now seen corresponding path program 14 times [2021-05-02 12:49:37,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:37,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791257721] [2021-05-02 12:49:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:37,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 144 proven. 240 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 12:49:37,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:37,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791257721] [2021-05-02 12:49:37,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791257721] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:37,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708095425] [2021-05-02 12:49:37,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:37,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:49:37,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:37,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 12:49:37,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:37,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:37,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:38,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:38,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:38,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:38,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 144 proven. 240 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 12:49:38,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708095425] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:38,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:38,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20 [2021-05-02 12:49:38,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060908008] [2021-05-02 12:49:38,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 12:49:38,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:38,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 12:49:38,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:49:38,028 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:38,649 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2021-05-02 12:49:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 12:49:38,649 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-05-02 12:49:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:38,650 INFO L225 Difference]: With dead ends: 68 [2021-05-02 12:49:38,650 INFO L226 Difference]: Without dead ends: 54 [2021-05-02 12:49:38,652 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 650.4ms TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 12:49:38,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-02 12:49:38,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-05-02 12:49:38,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:38,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-05-02 12:49:38,658 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 51 [2021-05-02 12:49:38,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:38,660 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-05-02 12:49:38,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:38,660 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-05-02 12:49:38,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 12:49:38,662 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:38,662 INFO L523 BasicCegarLoop]: trace histogram [21, 16, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:38,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 12:49:38,877 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:38,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:38,877 INFO L82 PathProgramCache]: Analyzing trace with hash 280032538, now seen corresponding path program 15 times [2021-05-02 12:49:38,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:38,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090090629] [2021-05-02 12:49:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:39,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 153 proven. 272 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 12:49:39,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:39,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090090629] [2021-05-02 12:49:39,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090090629] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:39,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673557131] [2021-05-02 12:49:39,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:39,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 12:49:39,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:39,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 12:49:39,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:39,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-05-02 12:49:39,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673557131] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:39,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:39,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11] total 29 [2021-05-02 12:49:39,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098656786] [2021-05-02 12:49:39,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 12:49:39,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:39,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 12:49:39,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=605, Unknown=0, NotChecked=0, Total=812 [2021-05-02 12:49:39,347 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 29 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:40,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:40,502 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2021-05-02 12:49:40,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 12:49:40,502 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-05-02 12:49:40,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:40,503 INFO L225 Difference]: With dead ends: 78 [2021-05-02 12:49:40,503 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 12:49:40,504 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 1189.7ms TimeCoverageRelationStatistics Valid=821, Invalid=2149, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 12:49:40,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 12:49:40,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2021-05-02 12:49:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 53 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:40,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2021-05-02 12:49:40,514 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 53 [2021-05-02 12:49:40,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:40,515 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2021-05-02 12:49:40,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:40,515 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2021-05-02 12:49:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 12:49:40,520 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:40,520 INFO L523 BasicCegarLoop]: trace histogram [23, 17, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:40,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:40,743 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:40,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:40,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1028338642, now seen corresponding path program 16 times [2021-05-02 12:49:40,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:40,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183867503] [2021-05-02 12:49:40,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:40,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 198 proven. 306 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 12:49:40,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:40,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183867503] [2021-05-02 12:49:40,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183867503] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:40,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98277200] [2021-05-02 12:49:40,952 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:40,993 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:49:40,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:40,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 12:49:40,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:41,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 198 proven. 306 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 12:49:41,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98277200] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:41,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:41,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-02 12:49:41,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220602317] [2021-05-02 12:49:41,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 12:49:41,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:41,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 12:49:41,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 12:49:41,142 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:41,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:41,766 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2021-05-02 12:49:41,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 12:49:41,766 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-05-02 12:49:41,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:41,767 INFO L225 Difference]: With dead ends: 76 [2021-05-02 12:49:41,767 INFO L226 Difference]: Without dead ends: 60 [2021-05-02 12:49:41,767 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 659.5ms TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 12:49:41,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-02 12:49:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-02 12:49:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2021-05-02 12:49:41,772 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 57 [2021-05-02 12:49:41,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:41,773 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2021-05-02 12:49:41,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2021-05-02 12:49:41,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 12:49:41,773 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:41,773 INFO L523 BasicCegarLoop]: trace histogram [24, 18, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:41,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 12:49:41,997 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:41,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:41,997 INFO L82 PathProgramCache]: Analyzing trace with hash -806827921, now seen corresponding path program 17 times [2021-05-02 12:49:41,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:41,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784955081] [2021-05-02 12:49:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:42,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 209 proven. 342 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 12:49:42,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:42,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784955081] [2021-05-02 12:49:42,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784955081] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:42,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72780008] [2021-05-02 12:49:42,271 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:42,330 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-05-02 12:49:42,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:42,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 12:49:42,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:42,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 209 proven. 342 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 12:49:42,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72780008] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:42,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:42,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 23 [2021-05-02 12:49:42,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065618015] [2021-05-02 12:49:42,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 12:49:42,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:42,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 12:49:42,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-02 12:49:42,459 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 22 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:43,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:43,062 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2021-05-02 12:49:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 12:49:43,063 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 22 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-05-02 12:49:43,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:43,064 INFO L225 Difference]: With dead ends: 78 [2021-05-02 12:49:43,064 INFO L226 Difference]: Without dead ends: 62 [2021-05-02 12:49:43,064 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 712.2ms TimeCoverageRelationStatistics Valid=652, Invalid=1070, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 12:49:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-02 12:49:43,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-05-02 12:49:43,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 57 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-05-02 12:49:43,069 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 59 [2021-05-02 12:49:43,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:43,069 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-05-02 12:49:43,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 22 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-05-02 12:49:43,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 12:49:43,070 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:43,070 INFO L523 BasicCegarLoop]: trace histogram [25, 19, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:43,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 12:49:43,271 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:43,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:43,271 INFO L82 PathProgramCache]: Analyzing trace with hash 829663692, now seen corresponding path program 18 times [2021-05-02 12:49:43,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:43,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978565842] [2021-05-02 12:49:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:43,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:43,528 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 220 proven. 380 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 12:49:43,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:43,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978565842] [2021-05-02 12:49:43,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978565842] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:43,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455149072] [2021-05-02 12:49:43,528 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:43,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2021-05-02 12:49:43,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:43,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 12:49:43,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:43,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-05-02 12:49:43,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455149072] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:43,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:43,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12] total 33 [2021-05-02 12:49:43,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733947054] [2021-05-02 12:49:43,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 12:49:43,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:43,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 12:49:43,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 12:49:43,867 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 33 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:45,122 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2021-05-02 12:49:45,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 12:49:45,123 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-05-02 12:49:45,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:45,123 INFO L225 Difference]: With dead ends: 88 [2021-05-02 12:49:45,124 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 12:49:45,125 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 1429.6ms TimeCoverageRelationStatistics Valid=1101, Invalid=2805, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 12:49:45,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 12:49:45,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2021-05-02 12:49:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 61 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2021-05-02 12:49:45,128 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 61 [2021-05-02 12:49:45,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:45,129 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2021-05-02 12:49:45,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2021-05-02 12:49:45,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 12:49:45,129 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:45,129 INFO L523 BasicCegarLoop]: trace histogram [27, 20, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:45,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:45,330 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:45,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:45,331 INFO L82 PathProgramCache]: Analyzing trace with hash -650094844, now seen corresponding path program 19 times [2021-05-02 12:49:45,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:45,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850635269] [2021-05-02 12:49:45,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:45,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 273 proven. 420 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 12:49:45,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:45,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850635269] [2021-05-02 12:49:45,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850635269] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:45,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775833092] [2021-05-02 12:49:45,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:45,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 12:49:45,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:45,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 273 proven. 420 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 12:49:45,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775833092] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:45,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:45,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2021-05-02 12:49:45,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042895784] [2021-05-02 12:49:45,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 12:49:45,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:45,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 12:49:45,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-02 12:49:45,783 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 25 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:46,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:46,460 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2021-05-02 12:49:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 12:49:46,460 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-05-02 12:49:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:46,461 INFO L225 Difference]: With dead ends: 86 [2021-05-02 12:49:46,461 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 12:49:46,462 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 773.7ms TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 12:49:46,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 12:49:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-05-02 12:49:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.126984126984127) internal successors, (71), 63 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2021-05-02 12:49:46,467 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 65 [2021-05-02 12:49:46,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:46,467 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2021-05-02 12:49:46,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2021-05-02 12:49:46,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 12:49:46,468 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:46,468 INFO L523 BasicCegarLoop]: trace histogram [28, 21, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:46,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 12:49:46,673 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:46,673 INFO L82 PathProgramCache]: Analyzing trace with hash -50200927, now seen corresponding path program 20 times [2021-05-02 12:49:46,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:46,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153118052] [2021-05-02 12:49:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:46,958 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 286 proven. 462 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 12:49:46,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:46,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153118052] [2021-05-02 12:49:46,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153118052] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:46,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653874961] [2021-05-02 12:49:46,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:47,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:49:47,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:47,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 12:49:47,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:47,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 286 proven. 462 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 12:49:47,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653874961] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:47,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:47,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 26 [2021-05-02 12:49:47,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79805122] [2021-05-02 12:49:47,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 12:49:47,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:47,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 12:49:47,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2021-05-02 12:49:47,157 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 25 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:47,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:47,890 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2021-05-02 12:49:47,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 12:49:47,891 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 25 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2021-05-02 12:49:47,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:47,891 INFO L225 Difference]: With dead ends: 88 [2021-05-02 12:49:47,891 INFO L226 Difference]: Without dead ends: 70 [2021-05-02 12:49:47,892 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 880.6ms TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 12:49:47,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-02 12:49:47,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-05-02 12:49:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.123076923076923) internal successors, (73), 65 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2021-05-02 12:49:47,896 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 67 [2021-05-02 12:49:47,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:47,896 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2021-05-02 12:49:47,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 25 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2021-05-02 12:49:47,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 12:49:47,897 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:47,897 INFO L523 BasicCegarLoop]: trace histogram [29, 22, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:48,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-02 12:49:48,110 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:48,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:48,111 INFO L82 PathProgramCache]: Analyzing trace with hash 922235646, now seen corresponding path program 21 times [2021-05-02 12:49:48,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:48,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890437954] [2021-05-02 12:49:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:48,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 299 proven. 506 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 12:49:48,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:48,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890437954] [2021-05-02 12:49:48,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890437954] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:48,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100446358] [2021-05-02 12:49:48,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:48,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-05-02 12:49:48,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:48,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 12:49:48,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:48,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-05-02 12:49:48,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100446358] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:48,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:48,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 13] total 37 [2021-05-02 12:49:48,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193749508] [2021-05-02 12:49:48,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 12:49:48,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:48,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 12:49:48,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=979, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 12:49:48,771 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 37 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:50,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:50,156 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2021-05-02 12:49:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 12:49:50,156 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-05-02 12:49:50,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:50,157 INFO L225 Difference]: With dead ends: 98 [2021-05-02 12:49:50,157 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 12:49:50,158 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1587.2ms TimeCoverageRelationStatistics Valid=1423, Invalid=3547, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 12:49:50,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 12:49:50,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2021-05-02 12:49:50,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 69 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2021-05-02 12:49:50,162 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 69 [2021-05-02 12:49:50,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:50,162 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2021-05-02 12:49:50,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:50,162 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2021-05-02 12:49:50,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 12:49:50,163 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:50,163 INFO L523 BasicCegarLoop]: trace histogram [31, 23, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:50,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:50,364 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:50,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:50,364 INFO L82 PathProgramCache]: Analyzing trace with hash -867094858, now seen corresponding path program 22 times [2021-05-02 12:49:50,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:50,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130189405] [2021-05-02 12:49:50,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:50,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 360 proven. 552 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 12:49:50,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:50,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130189405] [2021-05-02 12:49:50,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130189405] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:50,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148327704] [2021-05-02 12:49:50,667 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:50,709 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:49:50,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:50,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 12:49:50,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:50,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:50,861 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 360 proven. 552 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 12:49:50,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148327704] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:50,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:50,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-02 12:49:50,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175602888] [2021-05-02 12:49:50,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 12:49:50,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:50,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 12:49:50,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-02 12:49:50,862 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 27 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:51,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:51,680 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2021-05-02 12:49:51,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 12:49:51,681 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 27 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-05-02 12:49:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:51,682 INFO L225 Difference]: With dead ends: 96 [2021-05-02 12:49:51,682 INFO L226 Difference]: Without dead ends: 76 [2021-05-02 12:49:51,683 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 942.4ms TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 12:49:51,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-05-02 12:49:51,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-05-02 12:49:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.1267605633802817) internal successors, (80), 71 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2021-05-02 12:49:51,688 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 73 [2021-05-02 12:49:51,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:51,688 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2021-05-02 12:49:51,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 27 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:51,688 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2021-05-02 12:49:51,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 12:49:51,689 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:51,689 INFO L523 BasicCegarLoop]: trace histogram [32, 24, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:51,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 12:49:51,905 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:51,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:51,905 INFO L82 PathProgramCache]: Analyzing trace with hash 829679955, now seen corresponding path program 23 times [2021-05-02 12:49:51,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:51,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371148454] [2021-05-02 12:49:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:52,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 375 proven. 600 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 12:49:52,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:52,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371148454] [2021-05-02 12:49:52,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371148454] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:52,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621394605] [2021-05-02 12:49:52,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:52,295 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2021-05-02 12:49:52,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:52,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 12:49:52,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:52,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 375 proven. 600 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 12:49:52,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621394605] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:52,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:52,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 29 [2021-05-02 12:49:52,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740123372] [2021-05-02 12:49:52,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 12:49:52,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:52,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 12:49:52,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2021-05-02 12:49:52,459 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:53,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:53,419 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2021-05-02 12:49:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 12:49:53,420 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2021-05-02 12:49:53,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:53,421 INFO L225 Difference]: With dead ends: 98 [2021-05-02 12:49:53,421 INFO L226 Difference]: Without dead ends: 78 [2021-05-02 12:49:53,422 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1107.8ms TimeCoverageRelationStatistics Valid=1081, Invalid=1781, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 12:49:53,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-05-02 12:49:53,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-05-02 12:49:53,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 73 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2021-05-02 12:49:53,432 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 75 [2021-05-02 12:49:53,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:53,432 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2021-05-02 12:49:53,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:53,432 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2021-05-02 12:49:53,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 12:49:53,449 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:53,449 INFO L523 BasicCegarLoop]: trace histogram [33, 25, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:53,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:53,669 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:53,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:53,669 INFO L82 PathProgramCache]: Analyzing trace with hash -657297232, now seen corresponding path program 24 times [2021-05-02 12:49:53,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:53,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465295880] [2021-05-02 12:49:53,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 390 proven. 650 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 12:49:54,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:54,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465295880] [2021-05-02 12:49:54,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465295880] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:54,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574437272] [2021-05-02 12:49:54,288 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:54,417 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 12:49:54,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:54,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 12:49:54,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:54,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 439 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-05-02 12:49:54,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574437272] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:54,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:54,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 14] total 41 [2021-05-02 12:49:54,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201192234] [2021-05-02 12:49:54,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 12:49:54,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:54,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 12:49:54,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=1199, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 12:49:54,962 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 41 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:56,989 INFO L93 Difference]: Finished difference Result 108 states and 127 transitions. [2021-05-02 12:49:56,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 12:49:56,989 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2021-05-02 12:49:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:56,990 INFO L225 Difference]: With dead ends: 108 [2021-05-02 12:49:56,990 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 12:49:56,992 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 2591.1ms TimeCoverageRelationStatistics Valid=1787, Invalid=4375, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 12:49:56,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 12:49:56,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2021-05-02 12:49:56,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.12987012987013) internal successors, (87), 77 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2021-05-02 12:49:56,996 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 77 [2021-05-02 12:49:56,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:56,997 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2021-05-02 12:49:56,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2021-05-02 12:49:56,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 12:49:56,997 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:56,997 INFO L523 BasicCegarLoop]: trace histogram [35, 26, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:57,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 12:49:57,200 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:57,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:57,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1805228776, now seen corresponding path program 25 times [2021-05-02 12:49:57,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:57,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797871885] [2021-05-02 12:49:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:57,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 459 proven. 702 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 12:49:57,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:57,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797871885] [2021-05-02 12:49:57,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797871885] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:57,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288246807] [2021-05-02 12:49:57,918 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:58,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 12:49:58,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:58,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 459 proven. 702 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 12:49:58,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288246807] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:58,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:58,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2021-05-02 12:49:58,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257303740] [2021-05-02 12:49:58,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 12:49:58,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:58,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 12:49:58,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 12:49:58,356 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 30 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:59,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:59,833 INFO L93 Difference]: Finished difference Result 106 states and 124 transitions. [2021-05-02 12:49:59,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 12:49:59,833 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 30 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2021-05-02 12:49:59,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:59,834 INFO L225 Difference]: With dead ends: 106 [2021-05-02 12:49:59,834 INFO L226 Difference]: Without dead ends: 84 [2021-05-02 12:49:59,836 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1926.2ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 12:49:59,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-02 12:49:59,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-05-02 12:49:59,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.1265822784810127) internal successors, (89), 79 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2021-05-02 12:49:59,841 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 81 [2021-05-02 12:49:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:59,841 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2021-05-02 12:49:59,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 30 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:59,842 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2021-05-02 12:49:59,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 12:49:59,842 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:59,842 INFO L523 BasicCegarLoop]: trace histogram [36, 27, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:00,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:00,077 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:00,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:00,077 INFO L82 PathProgramCache]: Analyzing trace with hash 895117445, now seen corresponding path program 26 times [2021-05-02 12:50:00,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:00,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396298876] [2021-05-02 12:50:00,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:00,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 476 proven. 756 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 12:50:00,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:00,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396298876] [2021-05-02 12:50:00,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396298876] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:00,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006582103] [2021-05-02 12:50:00,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:00,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:50:00,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:00,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 12:50:00,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:00,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:00,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:01,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:01,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:01,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:01,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:01,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:01,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 476 proven. 756 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 12:50:01,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006582103] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:01,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:01,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 32 [2021-05-02 12:50:01,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718973353] [2021-05-02 12:50:01,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 12:50:01,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:01,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 12:50:01,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2021-05-02 12:50:01,066 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand has 32 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:02,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:02,387 INFO L93 Difference]: Finished difference Result 108 states and 126 transitions. [2021-05-02 12:50:02,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 12:50:02,388 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2021-05-02 12:50:02,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:02,388 INFO L225 Difference]: With dead ends: 108 [2021-05-02 12:50:02,388 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 12:50:02,391 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 1686.2ms TimeCoverageRelationStatistics Valid=1336, Invalid=2204, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 12:50:02,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 12:50:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-05-02 12:50:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.123456790123457) internal successors, (91), 81 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-05-02 12:50:02,397 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 83 [2021-05-02 12:50:02,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:02,397 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-05-02 12:50:02,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:02,397 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-05-02 12:50:02,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 12:50:02,398 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:02,398 INFO L523 BasicCegarLoop]: trace histogram [37, 28, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:02,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-05-02 12:50:02,620 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:02,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:02,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1843510558, now seen corresponding path program 27 times [2021-05-02 12:50:02,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:02,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191956664] [2021-05-02 12:50:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 493 proven. 812 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 12:50:03,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:03,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191956664] [2021-05-02 12:50:03,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191956664] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:03,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223746976] [2021-05-02 12:50:03,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:03,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-05-02 12:50:03,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:03,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 12:50:03,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:03,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:03,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 557 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2021-05-02 12:50:04,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223746976] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:04,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:04,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 15] total 45 [2021-05-02 12:50:04,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375560378] [2021-05-02 12:50:04,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 12:50:04,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:04,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 12:50:04,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=1441, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 12:50:04,006 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 45 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:05,989 INFO L93 Difference]: Finished difference Result 118 states and 139 transitions. [2021-05-02 12:50:05,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 12:50:05,990 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-05-02 12:50:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:05,990 INFO L225 Difference]: With dead ends: 118 [2021-05-02 12:50:05,990 INFO L226 Difference]: Without dead ends: 93 [2021-05-02 12:50:05,991 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 2590.8ms TimeCoverageRelationStatistics Valid=2193, Invalid=5289, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 12:50:05,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-02 12:50:05,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2021-05-02 12:50:05,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.1294117647058823) internal successors, (96), 85 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:05,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2021-05-02 12:50:05,995 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 85 [2021-05-02 12:50:05,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:05,995 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2021-05-02 12:50:05,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2021-05-02 12:50:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 12:50:05,996 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:05,996 INFO L523 BasicCegarLoop]: trace histogram [39, 29, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:06,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:06,199 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:06,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:06,200 INFO L82 PathProgramCache]: Analyzing trace with hash 230521754, now seen corresponding path program 28 times [2021-05-02 12:50:06,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:06,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216176478] [2021-05-02 12:50:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:06,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 570 proven. 870 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 12:50:06,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:06,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216176478] [2021-05-02 12:50:06,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216176478] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:06,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735163919] [2021-05-02 12:50:06,654 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:06,713 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:50:06,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:06,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 12:50:06,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:06,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 570 proven. 870 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 12:50:06,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735163919] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:06,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:06,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 12:50:06,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670986298] [2021-05-02 12:50:06,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 12:50:06,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:06,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 12:50:06,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 12:50:06,913 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 33 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:07,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:07,983 INFO L93 Difference]: Finished difference Result 116 states and 136 transitions. [2021-05-02 12:50:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 12:50:07,984 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 33 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2021-05-02 12:50:07,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:07,986 INFO L225 Difference]: With dead ends: 116 [2021-05-02 12:50:07,986 INFO L226 Difference]: Without dead ends: 92 [2021-05-02 12:50:07,988 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1305.7ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 12:50:07,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-02 12:50:07,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-05-02 12:50:07,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.1264367816091954) internal successors, (98), 87 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2021-05-02 12:50:08,000 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 89 [2021-05-02 12:50:08,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:08,000 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2021-05-02 12:50:08,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 33 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:08,000 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2021-05-02 12:50:08,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 12:50:08,001 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:08,001 INFO L523 BasicCegarLoop]: trace histogram [40, 30, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:08,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-02 12:50:08,213 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:08,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:08,213 INFO L82 PathProgramCache]: Analyzing trace with hash -765895625, now seen corresponding path program 29 times [2021-05-02 12:50:08,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:08,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203166075] [2021-05-02 12:50:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:08,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:08,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 589 proven. 930 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 12:50:08,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:08,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203166075] [2021-05-02 12:50:08,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203166075] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:08,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723404234] [2021-05-02 12:50:08,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:08,755 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2021-05-02 12:50:08,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:08,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 12:50:08,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:08,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 589 proven. 930 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 12:50:08,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723404234] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:08,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:08,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 35 [2021-05-02 12:50:08,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932510618] [2021-05-02 12:50:08,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 12:50:08,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:08,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 12:50:08,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 12:50:08,948 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:10,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:10,061 INFO L93 Difference]: Finished difference Result 118 states and 138 transitions. [2021-05-02 12:50:10,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 12:50:10,062 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2021-05-02 12:50:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:10,063 INFO L225 Difference]: With dead ends: 118 [2021-05-02 12:50:10,063 INFO L226 Difference]: Without dead ends: 94 [2021-05-02 12:50:10,063 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 1424.7ms TimeCoverageRelationStatistics Valid=1618, Invalid=2672, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 12:50:10,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-05-02 12:50:10,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-05-02 12:50:10,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.1235955056179776) internal successors, (100), 89 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:10,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-05-02 12:50:10,070 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 91 [2021-05-02 12:50:10,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:10,070 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-05-02 12:50:10,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:10,070 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-05-02 12:50:10,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 12:50:10,071 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:10,071 INFO L523 BasicCegarLoop]: trace histogram [41, 31, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:10,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:10,285 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:10,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:10,285 INFO L82 PathProgramCache]: Analyzing trace with hash -545289836, now seen corresponding path program 30 times [2021-05-02 12:50:10,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:10,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545569624] [2021-05-02 12:50:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:10,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 608 proven. 992 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 12:50:10,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:10,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545569624] [2021-05-02 12:50:10,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545569624] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:10,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155110160] [2021-05-02 12:50:10,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:10,844 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2021-05-02 12:50:10,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:10,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 12:50:10,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:10,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:10,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:10,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:10,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:10,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 689 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2021-05-02 12:50:11,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155110160] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:11,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:11,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 16] total 49 [2021-05-02 12:50:11,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266181236] [2021-05-02 12:50:11,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 12:50:11,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:11,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 12:50:11,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=1705, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 12:50:11,318 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 49 states, 48 states have (on average 2.0625) internal successors, (99), 47 states have internal predecessors, (99), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:13,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:13,529 INFO L93 Difference]: Finished difference Result 128 states and 151 transitions. [2021-05-02 12:50:13,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 12:50:13,530 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.0625) internal successors, (99), 47 states have internal predecessors, (99), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-05-02 12:50:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:13,530 INFO L225 Difference]: With dead ends: 128 [2021-05-02 12:50:13,531 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 12:50:13,532 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1532 ImplicationChecksByTransitivity, 2640.4ms TimeCoverageRelationStatistics Valid=2641, Invalid=6289, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 12:50:13,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 12:50:13,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2021-05-02 12:50:13,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.1290322580645162) internal successors, (105), 93 states have internal predecessors, (105), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2021-05-02 12:50:13,540 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 93 [2021-05-02 12:50:13,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:13,540 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2021-05-02 12:50:13,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 48 states have (on average 2.0625) internal successors, (99), 47 states have internal predecessors, (99), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:13,540 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2021-05-02 12:50:13,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 12:50:13,541 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:13,541 INFO L523 BasicCegarLoop]: trace histogram [43, 32, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:13,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 12:50:13,757 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:13,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:13,757 INFO L82 PathProgramCache]: Analyzing trace with hash -924274484, now seen corresponding path program 31 times [2021-05-02 12:50:13,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:13,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488398975] [2021-05-02 12:50:13,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:14,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 693 proven. 1056 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 12:50:14,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:14,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488398975] [2021-05-02 12:50:14,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488398975] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:14,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99860893] [2021-05-02 12:50:14,337 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:14,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 12:50:14,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:14,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 693 proven. 1056 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 12:50:14,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99860893] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:14,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:14,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2021-05-02 12:50:14,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296858372] [2021-05-02 12:50:14,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 12:50:14,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:14,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 12:50:14,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 12:50:14,636 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 36 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:15,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:15,953 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2021-05-02 12:50:15,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 12:50:15,954 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 36 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2021-05-02 12:50:15,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:15,955 INFO L225 Difference]: With dead ends: 126 [2021-05-02 12:50:15,955 INFO L226 Difference]: Without dead ends: 100 [2021-05-02 12:50:15,966 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1640.2ms TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 12:50:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-05-02 12:50:15,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-05-02 12:50:15,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.1263157894736842) internal successors, (107), 95 states have internal predecessors, (107), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2021-05-02 12:50:15,973 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 97 [2021-05-02 12:50:15,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:15,973 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2021-05-02 12:50:15,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 36 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:15,973 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2021-05-02 12:50:15,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-02 12:50:15,973 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:15,973 INFO L523 BasicCegarLoop]: trace histogram [44, 33, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:16,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-02 12:50:16,174 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:16,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:16,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1852005271, now seen corresponding path program 32 times [2021-05-02 12:50:16,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:16,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510116779] [2021-05-02 12:50:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:16,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 714 proven. 1122 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 12:50:16,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:16,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510116779] [2021-05-02 12:50:16,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510116779] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:16,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687218581] [2021-05-02 12:50:16,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:16,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:50:16,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:16,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 12:50:16,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:16,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:16,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:17,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:17,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:17,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:17,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:17,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:17,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:17,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 714 proven. 1122 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 12:50:17,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687218581] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:17,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:17,051 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 38 [2021-05-02 12:50:17,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727349701] [2021-05-02 12:50:17,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 12:50:17,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:17,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 12:50:17,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 12:50:17,053 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:18,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:18,408 INFO L93 Difference]: Finished difference Result 128 states and 150 transitions. [2021-05-02 12:50:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 12:50:18,409 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2021-05-02 12:50:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:18,409 INFO L225 Difference]: With dead ends: 128 [2021-05-02 12:50:18,409 INFO L226 Difference]: Without dead ends: 102 [2021-05-02 12:50:18,410 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1705.2ms TimeCoverageRelationStatistics Valid=1927, Invalid=3185, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 12:50:18,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-05-02 12:50:18,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-05-02 12:50:18,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.1237113402061856) internal successors, (109), 97 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-05-02 12:50:18,418 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 99 [2021-05-02 12:50:18,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:18,418 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-05-02 12:50:18,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:18,419 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-05-02 12:50:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 12:50:18,419 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:18,419 INFO L523 BasicCegarLoop]: trace histogram [45, 34, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:18,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:18,620 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:18,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:18,620 INFO L82 PathProgramCache]: Analyzing trace with hash -48094010, now seen corresponding path program 33 times [2021-05-02 12:50:18,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:18,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533054651] [2021-05-02 12:50:18,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:19,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 735 proven. 1190 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 12:50:19,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:19,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533054651] [2021-05-02 12:50:19,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533054651] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:19,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966497218] [2021-05-02 12:50:19,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:19,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 12:50:19,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:19,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 12:50:19,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:19,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 835 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2021-05-02 12:50:19,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966497218] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:19,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:19,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 17] total 53 [2021-05-02 12:50:19,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367227133] [2021-05-02 12:50:19,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 12:50:19,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:19,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 12:50:19,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=765, Invalid=1991, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 12:50:19,861 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 53 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 51 states have internal predecessors, (107), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:22,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:22,373 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2021-05-02 12:50:22,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 12:50:22,373 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 51 states have internal predecessors, (107), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2021-05-02 12:50:22,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:22,374 INFO L225 Difference]: With dead ends: 138 [2021-05-02 12:50:22,375 INFO L226 Difference]: Without dead ends: 109 [2021-05-02 12:50:22,376 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1804 ImplicationChecksByTransitivity, 3173.8ms TimeCoverageRelationStatistics Valid=3131, Invalid=7375, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 12:50:22,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-05-02 12:50:22,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2021-05-02 12:50:22,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.1287128712871286) internal successors, (114), 101 states have internal predecessors, (114), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:22,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2021-05-02 12:50:22,384 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 101 [2021-05-02 12:50:22,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:22,384 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2021-05-02 12:50:22,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 51 states have internal predecessors, (107), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:22,385 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2021-05-02 12:50:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 12:50:22,385 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:22,386 INFO L523 BasicCegarLoop]: trace histogram [47, 35, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:22,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-02 12:50:22,593 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:22,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:22,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1328604546, now seen corresponding path program 34 times [2021-05-02 12:50:22,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:22,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029223121] [2021-05-02 12:50:22,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:23,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 828 proven. 1260 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 12:50:23,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:23,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029223121] [2021-05-02 12:50:23,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029223121] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:23,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355201257] [2021-05-02 12:50:23,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:23,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:50:23,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:23,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 12:50:23,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:23,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 828 proven. 1260 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 12:50:23,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355201257] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:23,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:23,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 12:50:23,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786264033] [2021-05-02 12:50:23,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 12:50:23,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:23,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 12:50:23,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 12:50:23,554 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand has 40 states, 40 states have (on average 2.125) internal successors, (85), 39 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:25,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:25,065 INFO L93 Difference]: Finished difference Result 136 states and 160 transitions. [2021-05-02 12:50:25,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 12:50:25,066 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.125) internal successors, (85), 39 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2021-05-02 12:50:25,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:25,067 INFO L225 Difference]: With dead ends: 136 [2021-05-02 12:50:25,067 INFO L226 Difference]: Without dead ends: 108 [2021-05-02 12:50:25,068 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1881.3ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 12:50:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-05-02 12:50:25,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-05-02 12:50:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:25,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2021-05-02 12:50:25,077 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 105 [2021-05-02 12:50:25,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:25,077 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2021-05-02 12:50:25,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.125) internal successors, (85), 39 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:25,077 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2021-05-02 12:50:25,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 12:50:25,078 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:25,078 INFO L523 BasicCegarLoop]: trace histogram [48, 36, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:25,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:25,279 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:25,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:25,279 INFO L82 PathProgramCache]: Analyzing trace with hash -103276261, now seen corresponding path program 35 times [2021-05-02 12:50:25,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:25,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929105142] [2021-05-02 12:50:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:25,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 851 proven. 1332 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 12:50:25,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:25,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929105142] [2021-05-02 12:50:25,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929105142] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:25,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433126418] [2021-05-02 12:50:25,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:26,064 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-05-02 12:50:26,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:26,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 12:50:26,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:26,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 851 proven. 1332 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 12:50:26,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433126418] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:26,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:26,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 41 [2021-05-02 12:50:26,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228359813] [2021-05-02 12:50:26,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 12:50:26,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:26,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 12:50:26,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 12:50:26,305 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 40 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:27,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:27,823 INFO L93 Difference]: Finished difference Result 138 states and 162 transitions. [2021-05-02 12:50:27,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 12:50:27,824 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 40 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2021-05-02 12:50:27,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:27,824 INFO L225 Difference]: With dead ends: 138 [2021-05-02 12:50:27,825 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 12:50:27,825 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1980.9ms TimeCoverageRelationStatistics Valid=2263, Invalid=3743, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 12:50:27,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 12:50:27,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-05-02 12:50:27,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.1238095238095238) internal successors, (118), 105 states have internal predecessors, (118), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:27,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-05-02 12:50:27,834 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 107 [2021-05-02 12:50:27,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:27,834 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-05-02 12:50:27,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 40 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-05-02 12:50:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 12:50:27,835 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:27,835 INFO L523 BasicCegarLoop]: trace histogram [49, 37, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:28,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-05-02 12:50:28,049 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:28,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:28,049 INFO L82 PathProgramCache]: Analyzing trace with hash 616166520, now seen corresponding path program 36 times [2021-05-02 12:50:28,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:28,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717547854] [2021-05-02 12:50:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:28,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 874 proven. 1406 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 12:50:28,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:28,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717547854] [2021-05-02 12:50:28,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717547854] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:28,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122067715] [2021-05-02 12:50:28,768 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:28,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2021-05-02 12:50:28,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:28,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 12:50:28,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:28,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:28,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 995 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-05-02 12:50:29,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122067715] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:29,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:29,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 18] total 57 [2021-05-02 12:50:29,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401836658] [2021-05-02 12:50:29,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 12:50:29,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:29,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 12:50:29,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=893, Invalid=2299, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 12:50:29,422 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 57 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 55 states have internal predecessors, (115), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:32,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:32,351 INFO L93 Difference]: Finished difference Result 148 states and 175 transitions. [2021-05-02 12:50:32,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 12:50:32,352 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 55 states have internal predecessors, (115), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2021-05-02 12:50:32,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:32,353 INFO L225 Difference]: With dead ends: 148 [2021-05-02 12:50:32,353 INFO L226 Difference]: Without dead ends: 117 [2021-05-02 12:50:32,353 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2098 ImplicationChecksByTransitivity, 3637.7ms TimeCoverageRelationStatistics Valid=3663, Invalid=8547, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 12:50:32,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-05-02 12:50:32,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2021-05-02 12:50:32,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.128440366972477) internal successors, (123), 109 states have internal predecessors, (123), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:32,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 127 transitions. [2021-05-02 12:50:32,363 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 127 transitions. Word has length 109 [2021-05-02 12:50:32,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:32,363 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 127 transitions. [2021-05-02 12:50:32,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 55 states have internal predecessors, (115), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:32,363 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 127 transitions. [2021-05-02 12:50:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 12:50:32,364 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:32,364 INFO L523 BasicCegarLoop]: trace histogram [51, 38, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:32,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-02 12:50:32,581 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:32,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:32,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1800628048, now seen corresponding path program 37 times [2021-05-02 12:50:32,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:32,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629907747] [2021-05-02 12:50:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:33,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 975 proven. 1482 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 12:50:33,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:33,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629907747] [2021-05-02 12:50:33,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629907747] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:33,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735166102] [2021-05-02 12:50:33,313 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:33,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 12:50:33,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:33,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 975 proven. 1482 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 12:50:33,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735166102] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:33,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:33,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2021-05-02 12:50:33,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806653799] [2021-05-02 12:50:33,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 12:50:33,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:33,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 12:50:33,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 12:50:33,628 INFO L87 Difference]: Start difference. First operand 114 states and 127 transitions. Second operand has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 42 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:35,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:35,324 INFO L93 Difference]: Finished difference Result 146 states and 172 transitions. [2021-05-02 12:50:35,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 12:50:35,325 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 42 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2021-05-02 12:50:35,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:35,326 INFO L225 Difference]: With dead ends: 146 [2021-05-02 12:50:35,326 INFO L226 Difference]: Without dead ends: 116 [2021-05-02 12:50:35,327 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 2138.5ms TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 12:50:35,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-02 12:50:35,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-05-02 12:50:35,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.1261261261261262) internal successors, (125), 111 states have internal predecessors, (125), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:35,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 129 transitions. [2021-05-02 12:50:35,334 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 129 transitions. Word has length 113 [2021-05-02 12:50:35,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:35,334 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 129 transitions. [2021-05-02 12:50:35,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 42 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:35,334 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 129 transitions. [2021-05-02 12:50:35,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-02 12:50:35,335 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:35,335 INFO L523 BasicCegarLoop]: trace histogram [52, 39, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:35,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:35,542 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:35,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:35,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1296544333, now seen corresponding path program 38 times [2021-05-02 12:50:35,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:35,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895170162] [2021-05-02 12:50:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:36,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 1000 proven. 1560 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 12:50:36,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:36,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895170162] [2021-05-02 12:50:36,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895170162] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:36,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293341118] [2021-05-02 12:50:36,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:36,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:50:36,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:36,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 12:50:36,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:36,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 1000 proven. 1560 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 12:50:36,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293341118] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:36,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:36,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 44 [2021-05-02 12:50:36,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742802811] [2021-05-02 12:50:36,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 12:50:36,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:36,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 12:50:36,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 12:50:36,592 INFO L87 Difference]: Start difference. First operand 116 states and 129 transitions. Second operand has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 43 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:38,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:38,242 INFO L93 Difference]: Finished difference Result 148 states and 174 transitions. [2021-05-02 12:50:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 12:50:38,242 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 43 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2021-05-02 12:50:38,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:38,243 INFO L225 Difference]: With dead ends: 148 [2021-05-02 12:50:38,243 INFO L226 Difference]: Without dead ends: 118 [2021-05-02 12:50:38,243 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 2141.3ms TimeCoverageRelationStatistics Valid=2626, Invalid=4346, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 12:50:38,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-05-02 12:50:38,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-05-02 12:50:38,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 113 states have internal predecessors, (127), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2021-05-02 12:50:38,252 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 115 [2021-05-02 12:50:38,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:38,252 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2021-05-02 12:50:38,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 43 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2021-05-02 12:50:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 12:50:38,253 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:38,253 INFO L523 BasicCegarLoop]: trace histogram [53, 40, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:38,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:38,479 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:38,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1266866346, now seen corresponding path program 39 times [2021-05-02 12:50:38,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:38,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247366270] [2021-05-02 12:50:38,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:39,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 1025 proven. 1640 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 12:50:39,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:39,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247366270] [2021-05-02 12:50:39,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247366270] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:39,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616680865] [2021-05-02 12:50:39,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:39,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2021-05-02 12:50:39,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:39,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 12:50:39,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:39,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 1169 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2021-05-02 12:50:39,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616680865] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:39,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:39,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 19] total 61 [2021-05-02 12:50:39,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734199271] [2021-05-02 12:50:39,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 12:50:39,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:39,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 12:50:39,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1031, Invalid=2629, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 12:50:39,966 INFO L87 Difference]: Start difference. First operand 118 states and 131 transitions. Second operand has 61 states, 60 states have (on average 2.05) internal successors, (123), 59 states have internal predecessors, (123), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:43,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:43,122 INFO L93 Difference]: Finished difference Result 158 states and 187 transitions. [2021-05-02 12:50:43,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 12:50:43,123 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 2.05) internal successors, (123), 59 states have internal predecessors, (123), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2021-05-02 12:50:43,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:43,123 INFO L225 Difference]: With dead ends: 158 [2021-05-02 12:50:43,123 INFO L226 Difference]: Without dead ends: 125 [2021-05-02 12:50:43,124 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 3925.7ms TimeCoverageRelationStatistics Valid=4237, Invalid=9805, Unknown=0, NotChecked=0, Total=14042 [2021-05-02 12:50:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-02 12:50:43,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2021-05-02 12:50:43,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 1.1282051282051282) internal successors, (132), 117 states have internal predecessors, (132), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:43,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2021-05-02 12:50:43,134 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 117 [2021-05-02 12:50:43,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:43,134 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2021-05-02 12:50:43,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 60 states have (on average 2.05) internal successors, (123), 59 states have internal predecessors, (123), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:43,135 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2021-05-02 12:50:43,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 12:50:43,135 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:43,135 INFO L523 BasicCegarLoop]: trace histogram [55, 41, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:43,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:43,361 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:43,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:43,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1027935074, now seen corresponding path program 40 times [2021-05-02 12:50:43,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:43,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441887916] [2021-05-02 12:50:43,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:44,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 1134 proven. 1722 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 12:50:44,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:44,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441887916] [2021-05-02 12:50:44,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441887916] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:44,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514841300] [2021-05-02 12:50:44,194 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:44,272 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:50:44,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:44,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 12:50:44,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:44,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 1134 proven. 1722 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 12:50:44,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514841300] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:44,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:44,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-02 12:50:44,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983340652] [2021-05-02 12:50:44,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 12:50:44,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:44,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 12:50:44,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 12:50:44,502 INFO L87 Difference]: Start difference. First operand 122 states and 136 transitions. Second operand has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:46,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:46,364 INFO L93 Difference]: Finished difference Result 156 states and 184 transitions. [2021-05-02 12:50:46,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 12:50:46,365 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2021-05-02 12:50:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:46,365 INFO L225 Difference]: With dead ends: 156 [2021-05-02 12:50:46,366 INFO L226 Difference]: Without dead ends: 124 [2021-05-02 12:50:46,366 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2383.9ms TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 12:50:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-05-02 12:50:46,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-05-02 12:50:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 119 states have (on average 1.1260504201680672) internal successors, (134), 119 states have internal predecessors, (134), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 138 transitions. [2021-05-02 12:50:46,375 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 138 transitions. Word has length 121 [2021-05-02 12:50:46,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:46,375 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 138 transitions. [2021-05-02 12:50:46,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:46,376 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 138 transitions. [2021-05-02 12:50:46,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-02 12:50:46,376 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:46,376 INFO L523 BasicCegarLoop]: trace histogram [56, 42, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:46,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-02 12:50:46,577 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:46,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:46,577 INFO L82 PathProgramCache]: Analyzing trace with hash -944818177, now seen corresponding path program 41 times [2021-05-02 12:50:46,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:46,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986842286] [2021-05-02 12:50:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:47,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 1161 proven. 1806 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 12:50:47,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:47,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986842286] [2021-05-02 12:50:47,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986842286] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:47,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902044316] [2021-05-02 12:50:47,553 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:47,652 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 57 check-sat command(s) [2021-05-02 12:50:47,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:47,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 12:50:47,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:47,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 1161 proven. 1806 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 12:50:47,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902044316] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:47,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:47,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 47 [2021-05-02 12:50:47,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174451621] [2021-05-02 12:50:47,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 12:50:47,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:47,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 12:50:47,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 12:50:47,919 INFO L87 Difference]: Start difference. First operand 124 states and 138 transitions. Second operand has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 46 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:49,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:49,860 INFO L93 Difference]: Finished difference Result 158 states and 186 transitions. [2021-05-02 12:50:49,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 12:50:49,860 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 46 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2021-05-02 12:50:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:49,861 INFO L225 Difference]: With dead ends: 158 [2021-05-02 12:50:49,861 INFO L226 Difference]: Without dead ends: 126 [2021-05-02 12:50:49,862 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 2674.0ms TimeCoverageRelationStatistics Valid=3016, Invalid=4994, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 12:50:49,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-05-02 12:50:49,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-05-02 12:50:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.1239669421487604) internal successors, (136), 121 states have internal predecessors, (136), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2021-05-02 12:50:49,871 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 123 [2021-05-02 12:50:49,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:49,871 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2021-05-02 12:50:49,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 46 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:49,871 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2021-05-02 12:50:49,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 12:50:49,872 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:49,872 INFO L523 BasicCegarLoop]: trace histogram [57, 43, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:50,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:50,077 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:50,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:50,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1614852444, now seen corresponding path program 42 times [2021-05-02 12:50:50,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:50,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447836169] [2021-05-02 12:50:50,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:50,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:50,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 1188 proven. 1892 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 12:50:50,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:50,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447836169] [2021-05-02 12:50:50,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447836169] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:50,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251789162] [2021-05-02 12:50:50,955 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:51,063 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-02 12:50:51,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:51,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 12:50:51,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:51,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 1892 trivial. 0 not checked. [2021-05-02 12:50:51,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251789162] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:51,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:51,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 20] total 65 [2021-05-02 12:50:51,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216447441] [2021-05-02 12:50:51,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-02 12:50:51,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:51,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-02 12:50:51,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=2981, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 12:50:51,732 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand has 65 states, 64 states have (on average 2.046875) internal successors, (131), 63 states have internal predecessors, (131), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:55,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:55,278 INFO L93 Difference]: Finished difference Result 168 states and 199 transitions. [2021-05-02 12:50:55,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 12:50:55,278 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 2.046875) internal successors, (131), 63 states have internal predecessors, (131), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2021-05-02 12:50:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:55,279 INFO L225 Difference]: With dead ends: 168 [2021-05-02 12:50:55,279 INFO L226 Difference]: Without dead ends: 133 [2021-05-02 12:50:55,279 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2752 ImplicationChecksByTransitivity, 4393.9ms TimeCoverageRelationStatistics Valid=4853, Invalid=11149, Unknown=0, NotChecked=0, Total=16002 [2021-05-02 12:50:55,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-05-02 12:50:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2021-05-02 12:50:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.128) internal successors, (141), 125 states have internal predecessors, (141), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2021-05-02 12:50:55,288 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 125 [2021-05-02 12:50:55,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:55,289 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 145 transitions. [2021-05-02 12:50:55,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 64 states have (on average 2.046875) internal successors, (131), 63 states have internal predecessors, (131), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:55,289 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 145 transitions. [2021-05-02 12:50:55,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 12:50:55,289 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:55,290 INFO L523 BasicCegarLoop]: trace histogram [59, 44, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:55,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-02 12:50:55,493 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:55,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:55,493 INFO L82 PathProgramCache]: Analyzing trace with hash 719606420, now seen corresponding path program 43 times [2021-05-02 12:50:55,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:55,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840582177] [2021-05-02 12:50:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:56,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1305 proven. 1980 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 12:50:56,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:56,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840582177] [2021-05-02 12:50:56,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840582177] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:56,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192951877] [2021-05-02 12:50:56,449 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:56,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 12:50:56,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:56,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1305 proven. 1980 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 12:50:56,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192951877] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:56,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:56,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2021-05-02 12:50:56,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607427191] [2021-05-02 12:50:56,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 12:50:56,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:56,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 12:50:56,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 12:50:56,744 INFO L87 Difference]: Start difference. First operand 130 states and 145 transitions. Second operand has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:58,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:58,666 INFO L93 Difference]: Finished difference Result 166 states and 196 transitions. [2021-05-02 12:50:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 12:50:58,667 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2021-05-02 12:50:58,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:58,667 INFO L225 Difference]: With dead ends: 166 [2021-05-02 12:50:58,667 INFO L226 Difference]: Without dead ends: 132 [2021-05-02 12:50:58,668 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 2616.1ms TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 12:50:58,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-05-02 12:50:58,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-05-02 12:50:58,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.125984251968504) internal successors, (143), 127 states have internal predecessors, (143), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:58,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 147 transitions. [2021-05-02 12:50:58,685 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 147 transitions. Word has length 129 [2021-05-02 12:50:58,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:58,685 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 147 transitions. [2021-05-02 12:50:58,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:50:58,685 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 147 transitions. [2021-05-02 12:50:58,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 12:50:58,686 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:58,686 INFO L523 BasicCegarLoop]: trace histogram [60, 45, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:58,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-05-02 12:50:58,909 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:58,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:58,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1549439537, now seen corresponding path program 44 times [2021-05-02 12:50:58,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:58,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791463045] [2021-05-02 12:50:58,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:59,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 1334 proven. 2070 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 12:50:59,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:59,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791463045] [2021-05-02 12:50:59,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791463045] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:59,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127039775] [2021-05-02 12:50:59,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:00,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:51:00,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:00,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-02 12:51:00,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:00,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 1334 proven. 2070 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 12:51:00,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127039775] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:00,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:00,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 50 [2021-05-02 12:51:00,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331499945] [2021-05-02 12:51:00,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 12:51:00,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:00,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 12:51:00,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 12:51:00,270 INFO L87 Difference]: Start difference. First operand 132 states and 147 transitions. Second operand has 50 states, 50 states have (on average 2.1) internal successors, (105), 49 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:02,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:02,244 INFO L93 Difference]: Finished difference Result 168 states and 198 transitions. [2021-05-02 12:51:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 12:51:02,244 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.1) internal successors, (105), 49 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 131 [2021-05-02 12:51:02,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:02,245 INFO L225 Difference]: With dead ends: 168 [2021-05-02 12:51:02,245 INFO L226 Difference]: Without dead ends: 134 [2021-05-02 12:51:02,246 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 2746.3ms TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 12:51:02,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-05-02 12:51:02,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-05-02 12:51:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.124031007751938) internal successors, (145), 129 states have internal predecessors, (145), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2021-05-02 12:51:02,254 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 131 [2021-05-02 12:51:02,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:02,254 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2021-05-02 12:51:02,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 2.1) internal successors, (105), 49 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:02,254 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2021-05-02 12:51:02,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 12:51:02,255 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:02,255 INFO L523 BasicCegarLoop]: trace histogram [61, 46, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:02,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:02,476 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:02,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:02,476 INFO L82 PathProgramCache]: Analyzing trace with hash 155147918, now seen corresponding path program 45 times [2021-05-02 12:51:02,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:02,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455392862] [2021-05-02 12:51:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:03,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 1363 proven. 2162 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 12:51:03,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:03,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455392862] [2021-05-02 12:51:03,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455392862] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:03,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625408931] [2021-05-02 12:51:03,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:03,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-05-02 12:51:03,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:03,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 12:51:03,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:03,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 0 proven. 1559 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2021-05-02 12:51:04,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625408931] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:04,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:04,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 21] total 69 [2021-05-02 12:51:04,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727872747] [2021-05-02 12:51:04,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 12:51:04,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:04,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 12:51:04,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1337, Invalid=3355, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 12:51:04,261 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand has 69 states, 68 states have (on average 2.0441176470588234) internal successors, (139), 67 states have internal predecessors, (139), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:07,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:07,989 INFO L93 Difference]: Finished difference Result 178 states and 211 transitions. [2021-05-02 12:51:07,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 12:51:07,990 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 2.0441176470588234) internal successors, (139), 67 states have internal predecessors, (139), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 133 [2021-05-02 12:51:07,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:07,990 INFO L225 Difference]: With dead ends: 178 [2021-05-02 12:51:07,990 INFO L226 Difference]: Without dead ends: 141 [2021-05-02 12:51:07,992 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3112 ImplicationChecksByTransitivity, 4765.1ms TimeCoverageRelationStatistics Valid=5511, Invalid=12579, Unknown=0, NotChecked=0, Total=18090 [2021-05-02 12:51:07,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-05-02 12:51:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 138. [2021-05-02 12:51:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.1278195488721805) internal successors, (150), 133 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 154 transitions. [2021-05-02 12:51:08,013 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 154 transitions. Word has length 133 [2021-05-02 12:51:08,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:08,013 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 154 transitions. [2021-05-02 12:51:08,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 68 states have (on average 2.0441176470588234) internal successors, (139), 67 states have internal predecessors, (139), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 154 transitions. [2021-05-02 12:51:08,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 12:51:08,014 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:08,014 INFO L523 BasicCegarLoop]: trace histogram [63, 47, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:08,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-05-02 12:51:08,238 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:08,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:08,238 INFO L82 PathProgramCache]: Analyzing trace with hash -748794298, now seen corresponding path program 46 times [2021-05-02 12:51:08,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:08,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978389412] [2021-05-02 12:51:08,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:09,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 1488 proven. 2256 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 12:51:09,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:09,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978389412] [2021-05-02 12:51:09,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978389412] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:09,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196379312] [2021-05-02 12:51:09,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:09,370 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:51:09,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:09,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 12:51:09,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:09,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 1488 proven. 2256 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 12:51:09,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196379312] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:09,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:09,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 12:51:09,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813058325] [2021-05-02 12:51:09,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 12:51:09,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:09,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 12:51:09,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 12:51:09,638 INFO L87 Difference]: Start difference. First operand 138 states and 154 transitions. Second operand has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 51 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:11,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:11,736 INFO L93 Difference]: Finished difference Result 176 states and 208 transitions. [2021-05-02 12:51:11,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 12:51:11,736 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 51 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 137 [2021-05-02 12:51:11,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:11,737 INFO L225 Difference]: With dead ends: 176 [2021-05-02 12:51:11,737 INFO L226 Difference]: Without dead ends: 140 [2021-05-02 12:51:11,738 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 2931.3ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 12:51:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-05-02 12:51:11,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-05-02 12:51:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.125925925925926) internal successors, (152), 135 states have internal predecessors, (152), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:11,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 156 transitions. [2021-05-02 12:51:11,753 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 156 transitions. Word has length 137 [2021-05-02 12:51:11,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:11,755 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 156 transitions. [2021-05-02 12:51:11,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 51 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:11,755 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 156 transitions. [2021-05-02 12:51:11,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-05-02 12:51:11,756 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:11,756 INFO L523 BasicCegarLoop]: trace histogram [64, 48, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:11,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:11,977 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:11,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:11,977 INFO L82 PathProgramCache]: Analyzing trace with hash -199384861, now seen corresponding path program 47 times [2021-05-02 12:51:11,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:11,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383089849] [2021-05-02 12:51:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:13,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 1519 proven. 2352 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 12:51:13,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:13,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383089849] [2021-05-02 12:51:13,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383089849] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:13,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130725164] [2021-05-02 12:51:13,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:13,106 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 65 check-sat command(s) [2021-05-02 12:51:13,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:13,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 12:51:13,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:13,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 1519 proven. 2352 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 12:51:13,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130725164] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:13,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:13,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 53 [2021-05-02 12:51:13,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136945872] [2021-05-02 12:51:13,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 12:51:13,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:13,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 12:51:13,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 12:51:13,374 INFO L87 Difference]: Start difference. First operand 140 states and 156 transitions. Second operand has 53 states, 53 states have (on average 2.0943396226415096) internal successors, (111), 52 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:15,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:15,571 INFO L93 Difference]: Finished difference Result 178 states and 210 transitions. [2021-05-02 12:51:15,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 12:51:15,571 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0943396226415096) internal successors, (111), 52 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 139 [2021-05-02 12:51:15,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:15,572 INFO L225 Difference]: With dead ends: 178 [2021-05-02 12:51:15,572 INFO L226 Difference]: Without dead ends: 142 [2021-05-02 12:51:15,573 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 2987.3ms TimeCoverageRelationStatistics Valid=3877, Invalid=6425, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 12:51:15,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-05-02 12:51:15,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-05-02 12:51:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1240875912408759) internal successors, (154), 137 states have internal predecessors, (154), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2021-05-02 12:51:15,579 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 139 [2021-05-02 12:51:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:15,579 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2021-05-02 12:51:15,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.0943396226415096) internal successors, (111), 52 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2021-05-02 12:51:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 12:51:15,580 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:15,580 INFO L523 BasicCegarLoop]: trace histogram [65, 49, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:15,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-05-02 12:51:15,781 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:15,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:15,781 INFO L82 PathProgramCache]: Analyzing trace with hash -497893312, now seen corresponding path program 48 times [2021-05-02 12:51:15,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:15,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280607681] [2021-05-02 12:51:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:16,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 1550 proven. 2450 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 12:51:16,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:16,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280607681] [2021-05-02 12:51:16,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280607681] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:16,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883781030] [2021-05-02 12:51:16,886 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:17,006 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2021-05-02 12:51:17,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:17,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 12:51:17,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:17,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 0 proven. 1775 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2021-05-02 12:51:17,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883781030] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:17,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:17,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 22] total 73 [2021-05-02 12:51:17,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959061362] [2021-05-02 12:51:17,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 12:51:17,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:17,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 12:51:17,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1505, Invalid=3751, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 12:51:17,781 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand has 73 states, 72 states have (on average 2.0416666666666665) internal successors, (147), 71 states have internal predecessors, (147), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:21,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:21,835 INFO L93 Difference]: Finished difference Result 188 states and 223 transitions. [2021-05-02 12:51:21,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 12:51:21,835 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 2.0416666666666665) internal successors, (147), 71 states have internal predecessors, (147), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2021-05-02 12:51:21,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:21,836 INFO L225 Difference]: With dead ends: 188 [2021-05-02 12:51:21,836 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 12:51:21,837 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3494 ImplicationChecksByTransitivity, 5222.4ms TimeCoverageRelationStatistics Valid=6211, Invalid=14095, Unknown=0, NotChecked=0, Total=20306 [2021-05-02 12:51:21,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 12:51:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2021-05-02 12:51:21,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.127659574468085) internal successors, (159), 141 states have internal predecessors, (159), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:21,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 163 transitions. [2021-05-02 12:51:21,844 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 163 transitions. Word has length 141 [2021-05-02 12:51:21,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:21,844 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 163 transitions. [2021-05-02 12:51:21,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 72 states have (on average 2.0416666666666665) internal successors, (147), 71 states have internal predecessors, (147), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 163 transitions. [2021-05-02 12:51:21,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 12:51:21,845 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:21,845 INFO L523 BasicCegarLoop]: trace histogram [67, 50, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:22,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-02 12:51:22,050 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:22,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:22,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1611587192, now seen corresponding path program 49 times [2021-05-02 12:51:22,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:22,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558567464] [2021-05-02 12:51:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:23,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 1683 proven. 2550 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 12:51:23,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:23,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558567464] [2021-05-02 12:51:23,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558567464] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:23,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126891978] [2021-05-02 12:51:23,280 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:23,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 12:51:23,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:23,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 1683 proven. 2550 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 12:51:23,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126891978] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:23,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:23,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2021-05-02 12:51:23,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799442946] [2021-05-02 12:51:23,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 12:51:23,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:23,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 12:51:23,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 12:51:23,578 INFO L87 Difference]: Start difference. First operand 146 states and 163 transitions. Second operand has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:25,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:25,860 INFO L93 Difference]: Finished difference Result 186 states and 220 transitions. [2021-05-02 12:51:25,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 12:51:25,861 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2021-05-02 12:51:25,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:25,861 INFO L225 Difference]: With dead ends: 186 [2021-05-02 12:51:25,861 INFO L226 Difference]: Without dead ends: 148 [2021-05-02 12:51:25,862 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 3223.2ms TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 12:51:25,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-05-02 12:51:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-05-02 12:51:25,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 143 states have (on average 1.1258741258741258) internal successors, (161), 143 states have internal predecessors, (161), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:25,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 165 transitions. [2021-05-02 12:51:25,872 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 165 transitions. Word has length 145 [2021-05-02 12:51:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:25,872 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 165 transitions. [2021-05-02 12:51:25,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 165 transitions. [2021-05-02 12:51:25,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-02 12:51:25,873 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:25,873 INFO L523 BasicCegarLoop]: trace histogram [68, 51, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:26,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:26,089 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:26,089 INFO L82 PathProgramCache]: Analyzing trace with hash 726942741, now seen corresponding path program 50 times [2021-05-02 12:51:26,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:26,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75659564] [2021-05-02 12:51:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:27,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 1716 proven. 2652 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 12:51:27,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:27,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75659564] [2021-05-02 12:51:27,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75659564] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:27,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637712800] [2021-05-02 12:51:27,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:27,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:51:27,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:27,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-02 12:51:27,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:27,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 1716 proven. 2652 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 12:51:27,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637712800] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:27,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:27,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 56 [2021-05-02 12:51:27,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090391361] [2021-05-02 12:51:27,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 12:51:27,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:27,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 12:51:27,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 12:51:27,634 INFO L87 Difference]: Start difference. First operand 148 states and 165 transitions. Second operand has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:30,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:30,034 INFO L93 Difference]: Finished difference Result 188 states and 222 transitions. [2021-05-02 12:51:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 12:51:30,035 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 147 [2021-05-02 12:51:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:30,035 INFO L225 Difference]: With dead ends: 188 [2021-05-02 12:51:30,035 INFO L226 Difference]: Without dead ends: 150 [2021-05-02 12:51:30,036 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1527 ImplicationChecksByTransitivity, 3245.4ms TimeCoverageRelationStatistics Valid=4348, Invalid=7208, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 12:51:30,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-05-02 12:51:30,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-05-02 12:51:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.1241379310344828) internal successors, (163), 145 states have internal predecessors, (163), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2021-05-02 12:51:30,043 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 147 [2021-05-02 12:51:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:30,043 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2021-05-02 12:51:30,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2021-05-02 12:51:30,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 12:51:30,043 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:30,043 INFO L523 BasicCegarLoop]: trace histogram [69, 52, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:30,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2021-05-02 12:51:30,256 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:30,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:30,256 INFO L82 PathProgramCache]: Analyzing trace with hash 987149938, now seen corresponding path program 51 times [2021-05-02 12:51:30,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:30,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661902622] [2021-05-02 12:51:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:31,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 1749 proven. 2756 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 12:51:31,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:31,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661902622] [2021-05-02 12:51:31,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661902622] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:31,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321502784] [2021-05-02 12:51:31,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:31,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 12:51:31,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:31,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 12:51:31,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:31,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:31,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 0 proven. 2005 refuted. 0 times theorem prover too weak. 2756 trivial. 0 not checked. [2021-05-02 12:51:32,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321502784] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:32,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:32,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 23] total 77 [2021-05-02 12:51:32,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539300712] [2021-05-02 12:51:32,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 12:51:32,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:32,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 12:51:32,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1683, Invalid=4169, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 12:51:32,417 INFO L87 Difference]: Start difference. First operand 150 states and 167 transitions. Second operand has 77 states, 76 states have (on average 2.039473684210526) internal successors, (155), 75 states have internal predecessors, (155), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:37,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:37,427 INFO L93 Difference]: Finished difference Result 198 states and 235 transitions. [2021-05-02 12:51:37,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 12:51:37,428 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 2.039473684210526) internal successors, (155), 75 states have internal predecessors, (155), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2021-05-02 12:51:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:37,428 INFO L225 Difference]: With dead ends: 198 [2021-05-02 12:51:37,428 INFO L226 Difference]: Without dead ends: 157 [2021-05-02 12:51:37,429 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3898 ImplicationChecksByTransitivity, 6304.0ms TimeCoverageRelationStatistics Valid=6953, Invalid=15697, Unknown=0, NotChecked=0, Total=22650 [2021-05-02 12:51:37,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-05-02 12:51:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2021-05-02 12:51:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 149 states have (on average 1.1275167785234899) internal successors, (168), 149 states have internal predecessors, (168), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:37,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2021-05-02 12:51:37,437 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 149 [2021-05-02 12:51:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:37,438 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2021-05-02 12:51:37,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 76 states have (on average 2.039473684210526) internal successors, (155), 75 states have internal predecessors, (155), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2021-05-02 12:51:37,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 12:51:37,438 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:37,439 INFO L523 BasicCegarLoop]: trace histogram [71, 53, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:37,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:37,646 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:37,646 INFO L82 PathProgramCache]: Analyzing trace with hash -338042070, now seen corresponding path program 52 times [2021-05-02 12:51:37,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:37,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286690897] [2021-05-02 12:51:37,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:38,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 1890 proven. 2862 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 12:51:38,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:38,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286690897] [2021-05-02 12:51:38,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286690897] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:38,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403842031] [2021-05-02 12:51:38,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:39,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:51:39,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:39,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 12:51:39,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:39,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 1890 proven. 2862 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 12:51:39,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403842031] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:39,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:39,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-02 12:51:39,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586441882] [2021-05-02 12:51:39,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 12:51:39,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:39,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 12:51:39,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 12:51:39,287 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 57 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:41,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:41,842 INFO L93 Difference]: Finished difference Result 196 states and 232 transitions. [2021-05-02 12:51:41,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 12:51:41,842 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 57 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153 [2021-05-02 12:51:41,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:41,843 INFO L225 Difference]: With dead ends: 196 [2021-05-02 12:51:41,843 INFO L226 Difference]: Without dead ends: 156 [2021-05-02 12:51:41,844 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 3491.0ms TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 12:51:41,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-05-02 12:51:41,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-05-02 12:51:41,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 151 states have (on average 1.1258278145695364) internal successors, (170), 151 states have internal predecessors, (170), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:41,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 174 transitions. [2021-05-02 12:51:41,851 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 174 transitions. Word has length 153 [2021-05-02 12:51:41,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:41,851 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 174 transitions. [2021-05-02 12:51:41,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 57 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:41,851 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 174 transitions. [2021-05-02 12:51:41,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 12:51:41,852 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:41,852 INFO L523 BasicCegarLoop]: trace histogram [72, 54, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:42,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-02 12:51:42,052 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:42,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1880990777, now seen corresponding path program 53 times [2021-05-02 12:51:42,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:42,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41460247] [2021-05-02 12:51:42,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:43,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 1925 proven. 2970 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 12:51:43,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:43,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41460247] [2021-05-02 12:51:43,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41460247] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:43,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972675407] [2021-05-02 12:51:43,348 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:43,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2021-05-02 12:51:43,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:43,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 12:51:43,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:43,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 1925 proven. 2970 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 12:51:43,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972675407] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:43,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:43,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57] total 59 [2021-05-02 12:51:43,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543000587] [2021-05-02 12:51:43,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 12:51:43,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:43,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 12:51:43,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 12:51:43,734 INFO L87 Difference]: Start difference. First operand 156 states and 174 transitions. Second operand has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:46,305 INFO L93 Difference]: Finished difference Result 198 states and 234 transitions. [2021-05-02 12:51:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 12:51:46,305 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 155 [2021-05-02 12:51:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:46,306 INFO L225 Difference]: With dead ends: 198 [2021-05-02 12:51:46,306 INFO L226 Difference]: Without dead ends: 158 [2021-05-02 12:51:46,307 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 3526.8ms TimeCoverageRelationStatistics Valid=4846, Invalid=8036, Unknown=0, NotChecked=0, Total=12882 [2021-05-02 12:51:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-05-02 12:51:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-05-02 12:51:46,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.1241830065359477) internal successors, (172), 153 states have internal predecessors, (172), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2021-05-02 12:51:46,316 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 155 [2021-05-02 12:51:46,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:46,316 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2021-05-02 12:51:46,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:46,316 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2021-05-02 12:51:46,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 12:51:46,317 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:46,317 INFO L523 BasicCegarLoop]: trace histogram [73, 55, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:46,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-05-02 12:51:46,517 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:46,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:46,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1403986212, now seen corresponding path program 54 times [2021-05-02 12:51:46,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:46,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159037858] [2021-05-02 12:51:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:47,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 1960 proven. 3080 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 12:51:47,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:47,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159037858] [2021-05-02 12:51:47,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159037858] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:47,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728191304] [2021-05-02 12:51:47,831 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:47,953 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 71 check-sat command(s) [2021-05-02 12:51:47,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:47,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 12:51:47,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:48,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 0 proven. 2249 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2021-05-02 12:51:48,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728191304] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:48,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:48,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 24] total 81 [2021-05-02 12:51:48,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237607756] [2021-05-02 12:51:48,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 12:51:48,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:48,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 12:51:48,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1871, Invalid=4609, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 12:51:48,874 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand has 81 states, 80 states have (on average 2.0375) internal successors, (163), 79 states have internal predecessors, (163), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:53,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:53,555 INFO L93 Difference]: Finished difference Result 208 states and 247 transitions. [2021-05-02 12:51:53,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 12:51:53,558 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 2.0375) internal successors, (163), 79 states have internal predecessors, (163), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2021-05-02 12:51:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:53,559 INFO L225 Difference]: With dead ends: 208 [2021-05-02 12:51:53,559 INFO L226 Difference]: Without dead ends: 165 [2021-05-02 12:51:53,560 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4324 ImplicationChecksByTransitivity, 6243.4ms TimeCoverageRelationStatistics Valid=7737, Invalid=17385, Unknown=0, NotChecked=0, Total=25122 [2021-05-02 12:51:53,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-05-02 12:51:53,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 162. [2021-05-02 12:51:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.127388535031847) internal successors, (177), 157 states have internal predecessors, (177), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:53,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 181 transitions. [2021-05-02 12:51:53,568 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 181 transitions. Word has length 157 [2021-05-02 12:51:53,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:53,568 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 181 transitions. [2021-05-02 12:51:53,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 80 states have (on average 2.0375) internal successors, (163), 79 states have internal predecessors, (163), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:53,568 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 181 transitions. [2021-05-02 12:51:53,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 12:51:53,569 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:53,569 INFO L523 BasicCegarLoop]: trace histogram [75, 56, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:53,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:53,769 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:53,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:53,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1093352540, now seen corresponding path program 55 times [2021-05-02 12:51:53,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:53,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422874307] [2021-05-02 12:51:53,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:55,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 2109 proven. 3192 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 12:51:55,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:55,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422874307] [2021-05-02 12:51:55,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422874307] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:55,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020938158] [2021-05-02 12:51:55,184 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:55,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 12:51:55,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:55,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 2109 proven. 3192 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 12:51:55,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020938158] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:55,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:55,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2021-05-02 12:51:55,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547778811] [2021-05-02 12:51:55,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 12:51:55,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:55,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 12:51:55,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 12:51:55,525 INFO L87 Difference]: Start difference. First operand 162 states and 181 transitions. Second operand has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:58,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:58,328 INFO L93 Difference]: Finished difference Result 206 states and 244 transitions. [2021-05-02 12:51:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 12:51:58,329 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161 [2021-05-02 12:51:58,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:58,329 INFO L225 Difference]: With dead ends: 206 [2021-05-02 12:51:58,329 INFO L226 Difference]: Without dead ends: 164 [2021-05-02 12:51:58,330 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3872.1ms TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 12:51:58,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-05-02 12:51:58,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-05-02 12:51:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 159 states have (on average 1.1257861635220126) internal successors, (179), 159 states have internal predecessors, (179), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 183 transitions. [2021-05-02 12:51:58,341 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 183 transitions. Word has length 161 [2021-05-02 12:51:58,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:58,341 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 183 transitions. [2021-05-02 12:51:58,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:51:58,341 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 183 transitions. [2021-05-02 12:51:58,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-05-02 12:51:58,342 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:58,342 INFO L523 BasicCegarLoop]: trace histogram [76, 57, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:58,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:58,549 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:58,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:58,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1597229049, now seen corresponding path program 56 times [2021-05-02 12:51:58,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:58,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194047453] [2021-05-02 12:51:58,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:59,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 2146 proven. 3306 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 12:51:59,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:59,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194047453] [2021-05-02 12:51:59,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194047453] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:59,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348963687] [2021-05-02 12:51:59,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:00,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:52:00,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:52:00,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 59 conjunts are in the unsatisfiable core [2021-05-02 12:52:00,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:52:00,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 2146 proven. 3306 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 12:52:00,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348963687] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:00,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:52:00,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 62 [2021-05-02 12:52:00,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053723413] [2021-05-02 12:52:00,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 12:52:00,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:52:00,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 12:52:00,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 12:52:00,369 INFO L87 Difference]: Start difference. First operand 164 states and 183 transitions. Second operand has 62 states, 62 states have (on average 2.0806451612903225) internal successors, (129), 61 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:03,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:52:03,242 INFO L93 Difference]: Finished difference Result 208 states and 246 transitions. [2021-05-02 12:52:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 12:52:03,242 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.0806451612903225) internal successors, (129), 61 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 163 [2021-05-02 12:52:03,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:52:03,243 INFO L225 Difference]: With dead ends: 208 [2021-05-02 12:52:03,243 INFO L226 Difference]: Without dead ends: 166 [2021-05-02 12:52:03,244 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1878 ImplicationChecksByTransitivity, 3965.4ms TimeCoverageRelationStatistics Valid=5371, Invalid=8909, Unknown=0, NotChecked=0, Total=14280 [2021-05-02 12:52:03,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-05-02 12:52:03,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-05-02 12:52:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.124223602484472) internal successors, (181), 161 states have internal predecessors, (181), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:03,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 185 transitions. [2021-05-02 12:52:03,252 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 185 transitions. Word has length 163 [2021-05-02 12:52:03,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:52:03,253 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 185 transitions. [2021-05-02 12:52:03,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 2.0806451612903225) internal successors, (129), 61 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:03,253 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 185 transitions. [2021-05-02 12:52:03,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-02 12:52:03,254 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:52:03,254 INFO L523 BasicCegarLoop]: trace histogram [77, 58, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:52:03,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:03,457 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:52:03,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:52:03,457 INFO L82 PathProgramCache]: Analyzing trace with hash 491249750, now seen corresponding path program 57 times [2021-05-02 12:52:03,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:52:03,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566103718] [2021-05-02 12:52:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:52:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:04,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:52:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 2183 proven. 3422 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 12:52:05,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:52:05,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566103718] [2021-05-02 12:52:05,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566103718] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:05,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669985196] [2021-05-02 12:52:05,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:05,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2021-05-02 12:52:05,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:52:05,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 12:52:05,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:52:05,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:05,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:06,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:06,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:06,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:06,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:06,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:06,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 2507 refuted. 0 times theorem prover too weak. 3422 trivial. 0 not checked. [2021-05-02 12:52:06,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669985196] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:06,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:52:06,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 25] total 85 [2021-05-02 12:52:06,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789061111] [2021-05-02 12:52:06,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 12:52:06,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:52:06,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 12:52:06,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5071, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 12:52:06,114 INFO L87 Difference]: Start difference. First operand 166 states and 185 transitions. Second operand has 85 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 83 states have internal predecessors, (171), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:52:11,286 INFO L93 Difference]: Finished difference Result 218 states and 259 transitions. [2021-05-02 12:52:11,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 12:52:11,286 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 83 states have internal predecessors, (171), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165 [2021-05-02 12:52:11,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:52:11,287 INFO L225 Difference]: With dead ends: 218 [2021-05-02 12:52:11,287 INFO L226 Difference]: Without dead ends: 173 [2021-05-02 12:52:11,288 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4772 ImplicationChecksByTransitivity, 7031.7ms TimeCoverageRelationStatistics Valid=8563, Invalid=19159, Unknown=0, NotChecked=0, Total=27722 [2021-05-02 12:52:11,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-02 12:52:11,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2021-05-02 12:52:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.1272727272727272) internal successors, (186), 165 states have internal predecessors, (186), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 190 transitions. [2021-05-02 12:52:11,300 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 190 transitions. Word has length 165 [2021-05-02 12:52:11,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:52:11,300 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 190 transitions. [2021-05-02 12:52:11,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 83 states have internal predecessors, (171), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 190 transitions. [2021-05-02 12:52:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-02 12:52:11,301 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:52:11,301 INFO L523 BasicCegarLoop]: trace histogram [79, 59, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:52:11,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-05-02 12:52:11,505 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:52:11,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:52:11,505 INFO L82 PathProgramCache]: Analyzing trace with hash 402049550, now seen corresponding path program 58 times [2021-05-02 12:52:11,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:52:11,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484284707] [2021-05-02 12:52:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:52:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:52:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 2340 proven. 3540 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 12:52:13,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:52:13,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484284707] [2021-05-02 12:52:13,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484284707] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:13,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886545877] [2021-05-02 12:52:13,046 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:13,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:52:13,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:52:13,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 12:52:13,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:52:13,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 2340 proven. 3540 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 12:52:13,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886545877] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:13,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:52:13,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-02 12:52:13,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144791496] [2021-05-02 12:52:13,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 12:52:13,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:52:13,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 12:52:13,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 12:52:13,426 INFO L87 Difference]: Start difference. First operand 170 states and 190 transitions. Second operand has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:16,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:52:16,471 INFO L93 Difference]: Finished difference Result 216 states and 256 transitions. [2021-05-02 12:52:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 12:52:16,472 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169 [2021-05-02 12:52:16,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:52:16,472 INFO L225 Difference]: With dead ends: 216 [2021-05-02 12:52:16,472 INFO L226 Difference]: Without dead ends: 172 [2021-05-02 12:52:16,473 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 4198.7ms TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 12:52:16,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-05-02 12:52:16,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-05-02 12:52:16,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 1.125748502994012) internal successors, (188), 167 states have internal predecessors, (188), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 192 transitions. [2021-05-02 12:52:16,499 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 192 transitions. Word has length 169 [2021-05-02 12:52:16,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:52:16,499 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 192 transitions. [2021-05-02 12:52:16,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 192 transitions. [2021-05-02 12:52:16,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-05-02 12:52:16,500 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:52:16,500 INFO L523 BasicCegarLoop]: trace histogram [80, 60, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:52:16,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:16,723 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:52:16,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:52:16,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1002674005, now seen corresponding path program 59 times [2021-05-02 12:52:16,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:52:16,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315671460] [2021-05-02 12:52:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:52:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:18,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:52:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 2379 proven. 3660 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 12:52:18,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:52:18,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315671460] [2021-05-02 12:52:18,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315671460] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:18,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031243663] [2021-05-02 12:52:18,302 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:18,416 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 81 check-sat command(s) [2021-05-02 12:52:18,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:52:18,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 12:52:18,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:52:18,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 2379 proven. 3660 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 12:52:18,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031243663] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:18,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:52:18,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63] total 65 [2021-05-02 12:52:18,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212775476] [2021-05-02 12:52:18,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-02 12:52:18,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:52:18,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-02 12:52:18,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 12:52:18,772 INFO L87 Difference]: Start difference. First operand 172 states and 192 transitions. Second operand has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 64 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:21,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:52:21,905 INFO L93 Difference]: Finished difference Result 218 states and 258 transitions. [2021-05-02 12:52:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 12:52:21,906 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 64 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2021-05-02 12:52:21,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:52:21,906 INFO L225 Difference]: With dead ends: 218 [2021-05-02 12:52:21,906 INFO L226 Difference]: Without dead ends: 174 [2021-05-02 12:52:21,907 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2067 ImplicationChecksByTransitivity, 4341.0ms TimeCoverageRelationStatistics Valid=5923, Invalid=9827, Unknown=0, NotChecked=0, Total=15750 [2021-05-02 12:52:21,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-05-02 12:52:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-05-02 12:52:21,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.1242603550295858) internal successors, (190), 169 states have internal predecessors, (190), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2021-05-02 12:52:21,915 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 171 [2021-05-02 12:52:21,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:52:21,915 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2021-05-02 12:52:21,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 64 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:21,916 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2021-05-02 12:52:21,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 12:52:21,916 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:52:21,917 INFO L523 BasicCegarLoop]: trace histogram [81, 61, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:52:22,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-05-02 12:52:22,133 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:52:22,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:52:22,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1972687880, now seen corresponding path program 60 times [2021-05-02 12:52:22,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:52:22,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112968492] [2021-05-02 12:52:22,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:52:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:23,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:52:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2418 proven. 3782 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 12:52:23,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:52:23,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112968492] [2021-05-02 12:52:23,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112968492] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:23,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830110347] [2021-05-02 12:52:23,771 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:23,900 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-02 12:52:23,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:52:23,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 12:52:23,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:52:24,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:24,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:25,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:25,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:25,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:25,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:25,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 0 proven. 2779 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2021-05-02 12:52:25,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830110347] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:25,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:52:25,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 26] total 89 [2021-05-02 12:52:25,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736525727] [2021-05-02 12:52:25,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 12:52:25,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:52:25,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 12:52:25,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2277, Invalid=5555, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 12:52:25,155 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand has 89 states, 88 states have (on average 2.034090909090909) internal successors, (179), 87 states have internal predecessors, (179), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:30,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:52:30,864 INFO L93 Difference]: Finished difference Result 228 states and 271 transitions. [2021-05-02 12:52:30,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 12:52:30,864 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 2.034090909090909) internal successors, (179), 87 states have internal predecessors, (179), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 173 [2021-05-02 12:52:30,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:52:30,865 INFO L225 Difference]: With dead ends: 228 [2021-05-02 12:52:30,865 INFO L226 Difference]: Without dead ends: 181 [2021-05-02 12:52:30,866 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5242 ImplicationChecksByTransitivity, 7656.5ms TimeCoverageRelationStatistics Valid=9431, Invalid=21019, Unknown=0, NotChecked=0, Total=30450 [2021-05-02 12:52:30,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-05-02 12:52:30,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 178. [2021-05-02 12:52:30,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.1271676300578035) internal successors, (195), 173 states have internal predecessors, (195), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 199 transitions. [2021-05-02 12:52:30,875 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 199 transitions. Word has length 173 [2021-05-02 12:52:30,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:52:30,875 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 199 transitions. [2021-05-02 12:52:30,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 88 states have (on average 2.034090909090909) internal successors, (179), 87 states have internal predecessors, (179), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 199 transitions. [2021-05-02 12:52:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-02 12:52:30,876 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:52:30,876 INFO L523 BasicCegarLoop]: trace histogram [83, 62, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:52:31,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:31,081 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:52:31,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:52:31,081 INFO L82 PathProgramCache]: Analyzing trace with hash -742888384, now seen corresponding path program 61 times [2021-05-02 12:52:31,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:52:31,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738282972] [2021-05-02 12:52:31,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:52:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:32,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:52:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 2583 proven. 3906 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 12:52:32,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:52:32,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738282972] [2021-05-02 12:52:32,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738282972] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:32,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350047074] [2021-05-02 12:52:32,764 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:32,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 12:52:32,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:52:32,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:32,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 2583 proven. 3906 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 12:52:33,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350047074] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:33,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:52:33,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2021-05-02 12:52:33,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739235012] [2021-05-02 12:52:33,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 12:52:33,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:52:33,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 12:52:33,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 12:52:33,152 INFO L87 Difference]: Start difference. First operand 178 states and 199 transitions. Second operand has 67 states, 67 states have (on average 2.074626865671642) internal successors, (139), 66 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:36,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:52:36,476 INFO L93 Difference]: Finished difference Result 226 states and 268 transitions. [2021-05-02 12:52:36,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 12:52:36,476 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.074626865671642) internal successors, (139), 66 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177 [2021-05-02 12:52:36,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:52:36,477 INFO L225 Difference]: With dead ends: 226 [2021-05-02 12:52:36,477 INFO L226 Difference]: Without dead ends: 180 [2021-05-02 12:52:36,477 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 4617.7ms TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2021-05-02 12:52:36,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-05-02 12:52:36,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-05-02 12:52:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 1.1257142857142857) internal successors, (197), 175 states have internal predecessors, (197), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:36,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 201 transitions. [2021-05-02 12:52:36,492 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 201 transitions. Word has length 177 [2021-05-02 12:52:36,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:52:36,492 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 201 transitions. [2021-05-02 12:52:36,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.074626865671642) internal successors, (139), 66 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:36,493 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 201 transitions. [2021-05-02 12:52:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-02 12:52:36,493 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:52:36,493 INFO L523 BasicCegarLoop]: trace histogram [84, 63, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:52:36,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-02 12:52:36,694 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:52:36,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:52:36,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1787290147, now seen corresponding path program 62 times [2021-05-02 12:52:36,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:52:36,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270617941] [2021-05-02 12:52:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:52:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:38,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:52:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 2624 proven. 4032 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 12:52:38,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:52:38,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270617941] [2021-05-02 12:52:38,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270617941] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:38,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066956045] [2021-05-02 12:52:38,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:38,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:52:38,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:52:38,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 65 conjunts are in the unsatisfiable core [2021-05-02 12:52:38,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:52:38,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 2624 proven. 4032 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 12:52:38,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066956045] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:38,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:52:38,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 68 [2021-05-02 12:52:38,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857399734] [2021-05-02 12:52:38,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 12:52:38,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:52:38,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 12:52:38,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 12:52:38,852 INFO L87 Difference]: Start difference. First operand 180 states and 201 transitions. Second operand has 68 states, 68 states have (on average 2.073529411764706) internal successors, (141), 67 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:52:42,371 INFO L93 Difference]: Finished difference Result 228 states and 270 transitions. [2021-05-02 12:52:42,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 12:52:42,372 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.073529411764706) internal successors, (141), 67 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179 [2021-05-02 12:52:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:52:42,373 INFO L225 Difference]: With dead ends: 228 [2021-05-02 12:52:42,373 INFO L226 Difference]: Without dead ends: 182 [2021-05-02 12:52:42,373 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2265 ImplicationChecksByTransitivity, 4819.4ms TimeCoverageRelationStatistics Valid=6502, Invalid=10790, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 12:52:42,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-05-02 12:52:42,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-05-02 12:52:42,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 177 states have (on average 1.1242937853107344) internal successors, (199), 177 states have internal predecessors, (199), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 203 transitions. [2021-05-02 12:52:42,386 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 203 transitions. Word has length 179 [2021-05-02 12:52:42,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:52:42,386 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 203 transitions. [2021-05-02 12:52:42,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 2.073529411764706) internal successors, (141), 67 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:42,387 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 203 transitions. [2021-05-02 12:52:42,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 12:52:42,387 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:52:42,387 INFO L523 BasicCegarLoop]: trace histogram [85, 64, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:52:42,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-02 12:52:42,588 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:52:42,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:52:42,588 INFO L82 PathProgramCache]: Analyzing trace with hash -435037126, now seen corresponding path program 63 times [2021-05-02 12:52:42,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:52:42,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926718770] [2021-05-02 12:52:42,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:52:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:44,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:52:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 2665 proven. 4160 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 12:52:44,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:52:44,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926718770] [2021-05-02 12:52:44,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926718770] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:44,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532417078] [2021-05-02 12:52:44,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:44,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-05-02 12:52:44,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:52:44,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 12:52:44,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:52:44,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:45,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 0 proven. 3065 refuted. 0 times theorem prover too weak. 4160 trivial. 0 not checked. [2021-05-02 12:52:45,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532417078] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:45,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:52:45,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 27] total 93 [2021-05-02 12:52:45,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773352624] [2021-05-02 12:52:45,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 12:52:45,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:52:45,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 12:52:45,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2495, Invalid=6061, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 12:52:45,850 INFO L87 Difference]: Start difference. First operand 182 states and 203 transitions. Second operand has 93 states, 92 states have (on average 2.032608695652174) internal successors, (187), 91 states have internal predecessors, (187), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:52:52,179 INFO L93 Difference]: Finished difference Result 238 states and 283 transitions. [2021-05-02 12:52:52,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 12:52:52,179 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 2.032608695652174) internal successors, (187), 91 states have internal predecessors, (187), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2021-05-02 12:52:52,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:52:52,180 INFO L225 Difference]: With dead ends: 238 [2021-05-02 12:52:52,180 INFO L226 Difference]: Without dead ends: 189 [2021-05-02 12:52:52,181 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5734 ImplicationChecksByTransitivity, 8542.2ms TimeCoverageRelationStatistics Valid=10341, Invalid=22965, Unknown=0, NotChecked=0, Total=33306 [2021-05-02 12:52:52,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-05-02 12:52:52,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2021-05-02 12:52:52,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 181 states have (on average 1.12707182320442) internal successors, (204), 181 states have internal predecessors, (204), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:52,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 208 transitions. [2021-05-02 12:52:52,192 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 208 transitions. Word has length 181 [2021-05-02 12:52:52,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:52:52,193 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 208 transitions. [2021-05-02 12:52:52,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 92 states have (on average 2.032608695652174) internal successors, (187), 91 states have internal predecessors, (187), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:52,193 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 208 transitions. [2021-05-02 12:52:52,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 12:52:52,194 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:52:52,194 INFO L523 BasicCegarLoop]: trace histogram [87, 65, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:52:52,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-02 12:52:52,416 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:52:52,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:52:52,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1049361678, now seen corresponding path program 64 times [2021-05-02 12:52:52,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:52:52,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964620112] [2021-05-02 12:52:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:52:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:54,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:52:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 2838 proven. 4290 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 12:52:54,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:52:54,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964620112] [2021-05-02 12:52:54,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964620112] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:54,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060821641] [2021-05-02 12:52:54,285 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:54,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:52:54,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:52:54,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 12:52:54,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:52:54,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:54,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 2838 proven. 4290 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 12:52:54,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060821641] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:54,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:52:54,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-02 12:52:54,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615990341] [2021-05-02 12:52:54,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 12:52:54,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:52:54,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 12:52:54,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 12:52:54,689 INFO L87 Difference]: Start difference. First operand 186 states and 208 transitions. Second operand has 70 states, 70 states have (on average 2.0714285714285716) internal successors, (145), 69 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:52:58,400 INFO L93 Difference]: Finished difference Result 236 states and 280 transitions. [2021-05-02 12:52:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 12:52:58,401 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.0714285714285716) internal successors, (145), 69 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 185 [2021-05-02 12:52:58,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:52:58,402 INFO L225 Difference]: With dead ends: 236 [2021-05-02 12:52:58,402 INFO L226 Difference]: Without dead ends: 188 [2021-05-02 12:52:58,402 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 5152.4ms TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 12:52:58,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-05-02 12:52:58,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-05-02 12:52:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.1256830601092895) internal successors, (206), 183 states have internal predecessors, (206), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:58,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 210 transitions. [2021-05-02 12:52:58,413 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 210 transitions. Word has length 185 [2021-05-02 12:52:58,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:52:58,413 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 210 transitions. [2021-05-02 12:52:58,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 2.0714285714285716) internal successors, (145), 69 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:52:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 210 transitions. [2021-05-02 12:52:58,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-05-02 12:52:58,414 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:52:58,414 INFO L523 BasicCegarLoop]: trace histogram [88, 66, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:52:58,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-05-02 12:52:58,629 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:52:58,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:52:58,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1830107249, now seen corresponding path program 65 times [2021-05-02 12:52:58,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:52:58,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303959955] [2021-05-02 12:52:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:52:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:00,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:53:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 2881 proven. 4422 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 12:53:00,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:53:00,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303959955] [2021-05-02 12:53:00,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303959955] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:00,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576407035] [2021-05-02 12:53:00,646 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:00,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 89 check-sat command(s) [2021-05-02 12:53:00,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:53:00,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-02 12:53:00,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:53:00,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:00,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 2881 proven. 4422 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 12:53:01,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576407035] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:01,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:53:01,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69] total 71 [2021-05-02 12:53:01,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180062129] [2021-05-02 12:53:01,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 12:53:01,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:53:01,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 12:53:01,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 12:53:01,200 INFO L87 Difference]: Start difference. First operand 188 states and 210 transitions. Second operand has 71 states, 71 states have (on average 2.0704225352112675) internal successors, (147), 70 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:05,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:53:05,102 INFO L93 Difference]: Finished difference Result 238 states and 282 transitions. [2021-05-02 12:53:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 12:53:05,102 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0704225352112675) internal successors, (147), 70 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 187 [2021-05-02 12:53:05,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:53:05,103 INFO L225 Difference]: With dead ends: 238 [2021-05-02 12:53:05,103 INFO L226 Difference]: Without dead ends: 190 [2021-05-02 12:53:05,104 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2472 ImplicationChecksByTransitivity, 5474.1ms TimeCoverageRelationStatistics Valid=7108, Invalid=11798, Unknown=0, NotChecked=0, Total=18906 [2021-05-02 12:53:05,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-05-02 12:53:05,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-05-02 12:53:05,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.1243243243243244) internal successors, (208), 185 states have internal predecessors, (208), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 212 transitions. [2021-05-02 12:53:05,113 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 212 transitions. Word has length 187 [2021-05-02 12:53:05,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:53:05,113 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 212 transitions. [2021-05-02 12:53:05,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.0704225352112675) internal successors, (147), 70 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:05,113 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 212 transitions. [2021-05-02 12:53:05,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-02 12:53:05,114 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:53:05,114 INFO L523 BasicCegarLoop]: trace histogram [89, 67, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:53:05,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:05,315 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:53:05,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:53:05,315 INFO L82 PathProgramCache]: Analyzing trace with hash -507324180, now seen corresponding path program 66 times [2021-05-02 12:53:05,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:53:05,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815887314] [2021-05-02 12:53:05,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:53:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:07,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:53:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 2924 proven. 4556 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 12:53:07,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:53:07,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815887314] [2021-05-02 12:53:07,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815887314] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:07,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384878785] [2021-05-02 12:53:07,463 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:07,602 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 87 check-sat command(s) [2021-05-02 12:53:07,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:53:07,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 12:53:07,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:53:07,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:07,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:07,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:07,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:07,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:07,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:07,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:07,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:07,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:07,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:08,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 0 proven. 3365 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2021-05-02 12:53:09,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384878785] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:09,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:53:09,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 28] total 97 [2021-05-02 12:53:09,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834959195] [2021-05-02 12:53:09,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 12:53:09,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:53:09,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 12:53:09,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2723, Invalid=6589, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 12:53:09,037 INFO L87 Difference]: Start difference. First operand 190 states and 212 transitions. Second operand has 97 states, 96 states have (on average 2.03125) internal successors, (195), 95 states have internal predecessors, (195), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:53:16,174 INFO L93 Difference]: Finished difference Result 248 states and 295 transitions. [2021-05-02 12:53:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 12:53:16,175 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 2.03125) internal successors, (195), 95 states have internal predecessors, (195), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 189 [2021-05-02 12:53:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:53:16,176 INFO L225 Difference]: With dead ends: 248 [2021-05-02 12:53:16,176 INFO L226 Difference]: Without dead ends: 197 [2021-05-02 12:53:16,177 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6248 ImplicationChecksByTransitivity, 9670.3ms TimeCoverageRelationStatistics Valid=11293, Invalid=24997, Unknown=0, NotChecked=0, Total=36290 [2021-05-02 12:53:16,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-05-02 12:53:16,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 194. [2021-05-02 12:53:16,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.126984126984127) internal successors, (213), 189 states have internal predecessors, (213), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 217 transitions. [2021-05-02 12:53:16,186 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 217 transitions. Word has length 189 [2021-05-02 12:53:16,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:53:16,186 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 217 transitions. [2021-05-02 12:53:16,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 96 states have (on average 2.03125) internal successors, (195), 95 states have internal predecessors, (195), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:16,187 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 217 transitions. [2021-05-02 12:53:16,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-02 12:53:16,187 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:53:16,187 INFO L523 BasicCegarLoop]: trace histogram [91, 68, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:53:16,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:16,388 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:53:16,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:53:16,388 INFO L82 PathProgramCache]: Analyzing trace with hash -709530076, now seen corresponding path program 67 times [2021-05-02 12:53:16,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:53:16,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590133536] [2021-05-02 12:53:16,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:53:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:18,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:53:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 3105 proven. 4692 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 12:53:18,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:53:18,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590133536] [2021-05-02 12:53:18,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590133536] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:18,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364219997] [2021-05-02 12:53:18,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:18,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 12:53:18,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:53:18,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 3105 proven. 4692 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 12:53:19,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364219997] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:19,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:53:19,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-02 12:53:19,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087729565] [2021-05-02 12:53:19,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 12:53:19,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:53:19,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 12:53:19,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 12:53:19,186 INFO L87 Difference]: Start difference. First operand 194 states and 217 transitions. Second operand has 73 states, 73 states have (on average 2.0684931506849313) internal successors, (151), 72 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:53:23,538 INFO L93 Difference]: Finished difference Result 246 states and 292 transitions. [2021-05-02 12:53:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 12:53:23,539 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0684931506849313) internal successors, (151), 72 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 193 [2021-05-02 12:53:23,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:53:23,540 INFO L225 Difference]: With dead ends: 246 [2021-05-02 12:53:23,540 INFO L226 Difference]: Without dead ends: 196 [2021-05-02 12:53:23,541 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 6071.4ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-02 12:53:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-05-02 12:53:23,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-05-02 12:53:23,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.12565445026178) internal successors, (215), 191 states have internal predecessors, (215), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 219 transitions. [2021-05-02 12:53:23,552 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 219 transitions. Word has length 193 [2021-05-02 12:53:23,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:53:23,553 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 219 transitions. [2021-05-02 12:53:23,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.0684931506849313) internal successors, (151), 72 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:23,553 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 219 transitions. [2021-05-02 12:53:23,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-05-02 12:53:23,553 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:53:23,553 INFO L523 BasicCegarLoop]: trace histogram [92, 69, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:53:23,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-05-02 12:53:23,754 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:53:23,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:53:23,754 INFO L82 PathProgramCache]: Analyzing trace with hash 606094785, now seen corresponding path program 68 times [2021-05-02 12:53:23,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:53:23,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751925845] [2021-05-02 12:53:23,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:53:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:26,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:53:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:26,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 3150 proven. 4830 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 12:53:26,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:53:26,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751925845] [2021-05-02 12:53:26,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751925845] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:26,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688349170] [2021-05-02 12:53:26,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:26,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:53:26,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:53:26,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 71 conjunts are in the unsatisfiable core [2021-05-02 12:53:26,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:53:26,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 3150 proven. 4830 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 12:53:26,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688349170] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:26,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:53:26,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72] total 74 [2021-05-02 12:53:26,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349988531] [2021-05-02 12:53:26,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-02 12:53:26,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:53:26,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-02 12:53:26,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 12:53:26,617 INFO L87 Difference]: Start difference. First operand 196 states and 219 transitions. Second operand has 74 states, 74 states have (on average 2.0675675675675675) internal successors, (153), 73 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:31,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:53:31,009 INFO L93 Difference]: Finished difference Result 248 states and 294 transitions. [2021-05-02 12:53:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 12:53:31,009 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.0675675675675675) internal successors, (153), 73 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 195 [2021-05-02 12:53:31,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:53:31,010 INFO L225 Difference]: With dead ends: 248 [2021-05-02 12:53:31,010 INFO L226 Difference]: Without dead ends: 198 [2021-05-02 12:53:31,011 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2688 ImplicationChecksByTransitivity, 6275.5ms TimeCoverageRelationStatistics Valid=7741, Invalid=12851, Unknown=0, NotChecked=0, Total=20592 [2021-05-02 12:53:31,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-05-02 12:53:31,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-05-02 12:53:31,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.1243523316062176) internal successors, (217), 193 states have internal predecessors, (217), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:31,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 221 transitions. [2021-05-02 12:53:31,025 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 221 transitions. Word has length 195 [2021-05-02 12:53:31,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:53:31,026 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 221 transitions. [2021-05-02 12:53:31,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 2.0675675675675675) internal successors, (153), 73 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:31,026 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 221 transitions. [2021-05-02 12:53:31,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 12:53:31,027 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:53:31,027 INFO L523 BasicCegarLoop]: trace histogram [93, 70, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:53:31,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-05-02 12:53:31,241 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:53:31,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:53:31,241 INFO L82 PathProgramCache]: Analyzing trace with hash -2093766114, now seen corresponding path program 69 times [2021-05-02 12:53:31,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:53:31,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187680557] [2021-05-02 12:53:31,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:53:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:33,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:53:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 3195 proven. 4970 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 12:53:33,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:53:33,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187680557] [2021-05-02 12:53:33,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187680557] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:33,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723927410] [2021-05-02 12:53:33,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:33,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 12:53:33,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:53:33,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 12:53:33,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:53:34,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:34,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:35,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:35,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:35,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:35,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:35,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:35,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:35,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:35,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:35,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:35,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:35,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 0 proven. 3679 refuted. 0 times theorem prover too weak. 4970 trivial. 0 not checked. [2021-05-02 12:53:35,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723927410] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:35,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:53:35,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 29] total 101 [2021-05-02 12:53:35,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177998187] [2021-05-02 12:53:35,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2021-05-02 12:53:35,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:53:35,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-05-02 12:53:35,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2961, Invalid=7139, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 12:53:35,383 INFO L87 Difference]: Start difference. First operand 198 states and 221 transitions. Second operand has 101 states, 100 states have (on average 2.03) internal successors, (203), 99 states have internal predecessors, (203), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:43,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:53:43,588 INFO L93 Difference]: Finished difference Result 258 states and 307 transitions. [2021-05-02 12:53:43,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 12:53:43,588 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 2.03) internal successors, (203), 99 states have internal predecessors, (203), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 197 [2021-05-02 12:53:43,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:53:43,589 INFO L225 Difference]: With dead ends: 258 [2021-05-02 12:53:43,589 INFO L226 Difference]: Without dead ends: 205 [2021-05-02 12:53:43,591 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6784 ImplicationChecksByTransitivity, 11095.5ms TimeCoverageRelationStatistics Valid=12287, Invalid=27115, Unknown=0, NotChecked=0, Total=39402 [2021-05-02 12:53:43,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-05-02 12:53:43,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2021-05-02 12:53:43,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 197 states have (on average 1.1269035532994924) internal successors, (222), 197 states have internal predecessors, (222), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:43,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 226 transitions. [2021-05-02 12:53:43,606 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 226 transitions. Word has length 197 [2021-05-02 12:53:43,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:53:43,606 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 226 transitions. [2021-05-02 12:53:43,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 101 states, 100 states have (on average 2.03) internal successors, (203), 99 states have internal predecessors, (203), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:43,606 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 226 transitions. [2021-05-02 12:53:43,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-02 12:53:43,607 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:53:43,607 INFO L523 BasicCegarLoop]: trace histogram [95, 71, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:53:43,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-05-02 12:53:43,821 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:53:43,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:53:43,821 INFO L82 PathProgramCache]: Analyzing trace with hash -359625258, now seen corresponding path program 70 times [2021-05-02 12:53:43,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:53:43,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008038559] [2021-05-02 12:53:43,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:53:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:46,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:53:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 3384 proven. 5112 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 12:53:46,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:53:46,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008038559] [2021-05-02 12:53:46,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008038559] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:46,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193748372] [2021-05-02 12:53:46,548 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:46,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:53:46,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:53:46,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 12:53:46,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:53:46,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:46,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 3384 proven. 5112 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 12:53:47,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193748372] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:47,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:53:47,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 12:53:47,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937021042] [2021-05-02 12:53:47,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 12:53:47,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:53:47,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 12:53:47,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 12:53:47,164 INFO L87 Difference]: Start difference. First operand 202 states and 226 transitions. Second operand has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 75 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:53,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:53:53,655 INFO L93 Difference]: Finished difference Result 256 states and 304 transitions. [2021-05-02 12:53:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 12:53:53,655 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 75 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 201 [2021-05-02 12:53:53,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:53:53,656 INFO L225 Difference]: With dead ends: 256 [2021-05-02 12:53:53,656 INFO L226 Difference]: Without dead ends: 204 [2021-05-02 12:53:53,657 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 8475.2ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 12:53:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-05-02 12:53:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2021-05-02 12:53:53,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.1256281407035176) internal successors, (224), 199 states have internal predecessors, (224), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:53,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 228 transitions. [2021-05-02 12:53:53,682 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 228 transitions. Word has length 201 [2021-05-02 12:53:53,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:53:53,682 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 228 transitions. [2021-05-02 12:53:53,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 75 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:53:53,682 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 228 transitions. [2021-05-02 12:53:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 12:53:53,683 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:53:53,683 INFO L523 BasicCegarLoop]: trace histogram [96, 72, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:53:53,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-05-02 12:53:53,886 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:53:53,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:53:53,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1775470477, now seen corresponding path program 71 times [2021-05-02 12:53:53,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:53:53,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237999332] [2021-05-02 12:53:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:53:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:56,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:53:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 3431 proven. 5256 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 12:53:56,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:53:56,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237999332] [2021-05-02 12:53:56,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237999332] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:56,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272311711] [2021-05-02 12:53:56,538 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:56,643 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2021-05-02 12:53:56,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:53:56,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 12:53:56,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:53:56,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:56,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:57,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:57,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:57,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:57,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:57,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:57,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:57,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:57,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:57,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:57,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:57,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:57,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 3431 proven. 5256 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 12:53:57,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272311711] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:57,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:53:57,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75] total 77 [2021-05-02 12:53:57,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58302640] [2021-05-02 12:53:57,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 12:53:57,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:53:57,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 12:53:57,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 12:53:57,100 INFO L87 Difference]: Start difference. First operand 204 states and 228 transitions. Second operand has 77 states, 77 states have (on average 2.064935064935065) internal successors, (159), 76 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:54:02,000 INFO L93 Difference]: Finished difference Result 258 states and 306 transitions. [2021-05-02 12:54:02,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 12:54:02,000 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.064935064935065) internal successors, (159), 76 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 203 [2021-05-02 12:54:02,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:54:02,001 INFO L225 Difference]: With dead ends: 258 [2021-05-02 12:54:02,001 INFO L226 Difference]: Without dead ends: 206 [2021-05-02 12:54:02,002 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2913 ImplicationChecksByTransitivity, 7030.0ms TimeCoverageRelationStatistics Valid=8401, Invalid=13949, Unknown=0, NotChecked=0, Total=22350 [2021-05-02 12:54:02,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-05-02 12:54:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-05-02 12:54:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.1243781094527363) internal successors, (226), 201 states have internal predecessors, (226), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:02,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 230 transitions. [2021-05-02 12:54:02,015 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 230 transitions. Word has length 203 [2021-05-02 12:54:02,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:54:02,015 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 230 transitions. [2021-05-02 12:54:02,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 2.064935064935065) internal successors, (159), 76 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:02,016 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 230 transitions. [2021-05-02 12:54:02,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-02 12:54:02,017 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:54:02,017 INFO L523 BasicCegarLoop]: trace histogram [97, 73, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:54:02,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-05-02 12:54:02,233 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:54:02,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:54:02,233 INFO L82 PathProgramCache]: Analyzing trace with hash -898093104, now seen corresponding path program 72 times [2021-05-02 12:54:02,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:54:02,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133958850] [2021-05-02 12:54:02,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:54:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:54:04,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:54:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:54:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 3478 proven. 5402 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 12:54:04,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:54:04,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133958850] [2021-05-02 12:54:04,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133958850] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:54:04,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953424393] [2021-05-02 12:54:04,911 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:54:05,072 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-05-02 12:54:05,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:54:05,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 12:54:05,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:54:05,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:05,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 0 proven. 4007 refuted. 0 times theorem prover too weak. 5402 trivial. 0 not checked. [2021-05-02 12:54:06,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953424393] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:54:06,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:54:06,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 30] total 105 [2021-05-02 12:54:06,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497644928] [2021-05-02 12:54:06,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 12:54:06,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:54:06,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 12:54:06,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3209, Invalid=7711, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 12:54:06,842 INFO L87 Difference]: Start difference. First operand 206 states and 230 transitions. Second operand has 105 states, 104 states have (on average 2.0288461538461537) internal successors, (211), 103 states have internal predecessors, (211), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:15,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:54:15,652 INFO L93 Difference]: Finished difference Result 268 states and 319 transitions. [2021-05-02 12:54:15,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 12:54:15,652 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 2.0288461538461537) internal successors, (211), 103 states have internal predecessors, (211), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 205 [2021-05-02 12:54:15,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:54:15,653 INFO L225 Difference]: With dead ends: 268 [2021-05-02 12:54:15,653 INFO L226 Difference]: Without dead ends: 213 [2021-05-02 12:54:15,655 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7342 ImplicationChecksByTransitivity, 12015.8ms TimeCoverageRelationStatistics Valid=13323, Invalid=29319, Unknown=0, NotChecked=0, Total=42642 [2021-05-02 12:54:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-05-02 12:54:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 210. [2021-05-02 12:54:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.1268292682926828) internal successors, (231), 205 states have internal predecessors, (231), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 235 transitions. [2021-05-02 12:54:15,668 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 235 transitions. Word has length 205 [2021-05-02 12:54:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:54:15,668 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 235 transitions. [2021-05-02 12:54:15,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 104 states have (on average 2.0288461538461537) internal successors, (211), 103 states have internal predecessors, (211), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 235 transitions. [2021-05-02 12:54:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 12:54:15,669 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:54:15,669 INFO L523 BasicCegarLoop]: trace histogram [99, 74, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:54:15,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:54:15,871 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:54:15,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:54:15,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2107720200, now seen corresponding path program 73 times [2021-05-02 12:54:15,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:54:15,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890255539] [2021-05-02 12:54:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:54:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:54:18,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:54:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:54:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 3675 proven. 5550 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 12:54:18,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:54:18,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890255539] [2021-05-02 12:54:18,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890255539] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:54:18,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217966319] [2021-05-02 12:54:18,658 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:54:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:54:18,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 12:54:18,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:54:18,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:18,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 3675 proven. 5550 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 12:54:19,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217966319] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:54:19,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:54:19,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-02 12:54:19,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511575630] [2021-05-02 12:54:19,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 12:54:19,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:54:19,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 12:54:19,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 12:54:19,197 INFO L87 Difference]: Start difference. First operand 210 states and 235 transitions. Second operand has 79 states, 79 states have (on average 2.0632911392405062) internal successors, (163), 78 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:24,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:54:24,684 INFO L93 Difference]: Finished difference Result 266 states and 316 transitions. [2021-05-02 12:54:24,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 12:54:24,685 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.0632911392405062) internal successors, (163), 78 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 209 [2021-05-02 12:54:24,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:54:24,686 INFO L225 Difference]: With dead ends: 266 [2021-05-02 12:54:24,686 INFO L226 Difference]: Without dead ends: 212 [2021-05-02 12:54:24,687 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 7737.6ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 12:54:24,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-05-02 12:54:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-05-02 12:54:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.1256038647342994) internal successors, (233), 207 states have internal predecessors, (233), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:24,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 237 transitions. [2021-05-02 12:54:24,703 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 237 transitions. Word has length 209 [2021-05-02 12:54:24,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:54:24,703 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 237 transitions. [2021-05-02 12:54:24,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.0632911392405062) internal successors, (163), 78 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:24,703 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 237 transitions. [2021-05-02 12:54:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-05-02 12:54:24,704 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:54:24,704 INFO L523 BasicCegarLoop]: trace histogram [100, 75, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:54:24,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-05-02 12:54:24,930 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:54:24,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:54:24,930 INFO L82 PathProgramCache]: Analyzing trace with hash -643088475, now seen corresponding path program 74 times [2021-05-02 12:54:24,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:54:24,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127274573] [2021-05-02 12:54:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:54:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:54:27,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:54:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:54:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 3724 proven. 5700 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 12:54:27,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:54:27,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127274573] [2021-05-02 12:54:27,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127274573] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:54:27,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585211307] [2021-05-02 12:54:27,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:54:27,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:54:27,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:54:27,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 77 conjunts are in the unsatisfiable core [2021-05-02 12:54:27,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:54:27,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:27,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 3724 proven. 5700 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 12:54:28,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585211307] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:54:28,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:54:28,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78] total 80 [2021-05-02 12:54:28,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673216962] [2021-05-02 12:54:28,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 12:54:28,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:54:28,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 12:54:28,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 12:54:28,425 INFO L87 Difference]: Start difference. First operand 212 states and 237 transitions. Second operand has 80 states, 80 states have (on average 2.0625) internal successors, (165), 79 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:34,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:54:34,176 INFO L93 Difference]: Finished difference Result 268 states and 318 transitions. [2021-05-02 12:54:34,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 12:54:34,177 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.0625) internal successors, (165), 79 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 211 [2021-05-02 12:54:34,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:54:34,178 INFO L225 Difference]: With dead ends: 268 [2021-05-02 12:54:34,178 INFO L226 Difference]: Without dead ends: 214 [2021-05-02 12:54:34,179 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3147 ImplicationChecksByTransitivity, 8054.8ms TimeCoverageRelationStatistics Valid=9088, Invalid=15092, Unknown=0, NotChecked=0, Total=24180 [2021-05-02 12:54:34,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-05-02 12:54:34,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-05-02 12:54:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.124401913875598) internal successors, (235), 209 states have internal predecessors, (235), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 239 transitions. [2021-05-02 12:54:34,195 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 239 transitions. Word has length 211 [2021-05-02 12:54:34,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:54:34,195 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 239 transitions. [2021-05-02 12:54:34,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 2.0625) internal successors, (165), 79 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:34,195 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 239 transitions. [2021-05-02 12:54:34,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-02 12:54:34,196 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:54:34,196 INFO L523 BasicCegarLoop]: trace histogram [101, 76, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:54:34,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:54:34,419 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:54:34,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:54:34,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1529629186, now seen corresponding path program 75 times [2021-05-02 12:54:34,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:54:34,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593403954] [2021-05-02 12:54:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:54:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:54:37,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:54:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:54:37,758 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 3773 proven. 5852 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 12:54:37,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:54:37,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593403954] [2021-05-02 12:54:37,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593403954] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:54:37,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758837312] [2021-05-02 12:54:37,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:54:37,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2021-05-02 12:54:37,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:54:37,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 12:54:37,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:54:38,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:38,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:39,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 0 proven. 4349 refuted. 0 times theorem prover too weak. 5852 trivial. 0 not checked. [2021-05-02 12:54:39,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758837312] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:54:39,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:54:39,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 31] total 109 [2021-05-02 12:54:39,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880318759] [2021-05-02 12:54:39,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-02 12:54:39,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:54:39,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-02 12:54:39,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3467, Invalid=8305, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 12:54:39,963 INFO L87 Difference]: Start difference. First operand 214 states and 239 transitions. Second operand has 109 states, 108 states have (on average 2.0277777777777777) internal successors, (219), 107 states have internal predecessors, (219), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:50,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:54:50,813 INFO L93 Difference]: Finished difference Result 278 states and 331 transitions. [2021-05-02 12:54:50,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-05-02 12:54:50,814 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 108 states have (on average 2.0277777777777777) internal successors, (219), 107 states have internal predecessors, (219), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 213 [2021-05-02 12:54:50,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:54:50,815 INFO L225 Difference]: With dead ends: 278 [2021-05-02 12:54:50,815 INFO L226 Difference]: Without dead ends: 221 [2021-05-02 12:54:50,816 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7922 ImplicationChecksByTransitivity, 14969.0ms TimeCoverageRelationStatistics Valid=14401, Invalid=31609, Unknown=0, NotChecked=0, Total=46010 [2021-05-02 12:54:50,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-05-02 12:54:50,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 218. [2021-05-02 12:54:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 213 states have (on average 1.1267605633802817) internal successors, (240), 213 states have internal predecessors, (240), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 244 transitions. [2021-05-02 12:54:50,828 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 244 transitions. Word has length 213 [2021-05-02 12:54:50,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:54:50,828 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 244 transitions. [2021-05-02 12:54:50,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 109 states, 108 states have (on average 2.0277777777777777) internal successors, (219), 107 states have internal predecessors, (219), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:54:50,828 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 244 transitions. [2021-05-02 12:54:50,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-02 12:54:50,829 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:54:50,829 INFO L523 BasicCegarLoop]: trace histogram [103, 77, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:54:51,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-05-02 12:54:51,045 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:54:51,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:54:51,045 INFO L82 PathProgramCache]: Analyzing trace with hash -301241670, now seen corresponding path program 76 times [2021-05-02 12:54:51,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:54:51,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813007581] [2021-05-02 12:54:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:54:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:54:54,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:54:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:54:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 3978 proven. 6006 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 12:54:54,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:54:54,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813007581] [2021-05-02 12:54:54,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813007581] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:54:54,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988291164] [2021-05-02 12:54:54,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:54:54,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:54:54,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:54:54,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 12:54:54,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:54:54,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:54:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 3978 proven. 6006 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 12:54:54,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988291164] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:54:54,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:54:54,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 12:54:54,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181923088] [2021-05-02 12:54:54,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 12:54:54,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:54:54,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 12:54:54,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 12:54:54,988 INFO L87 Difference]: Start difference. First operand 218 states and 244 transitions. Second operand has 82 states, 82 states have (on average 2.0609756097560976) internal successors, (169), 81 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:00,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:55:00,184 INFO L93 Difference]: Finished difference Result 276 states and 328 transitions. [2021-05-02 12:55:00,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 12:55:00,184 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0609756097560976) internal successors, (169), 81 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217 [2021-05-02 12:55:00,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:55:00,185 INFO L225 Difference]: With dead ends: 276 [2021-05-02 12:55:00,185 INFO L226 Difference]: Without dead ends: 220 [2021-05-02 12:55:00,186 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 8018.1ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 12:55:00,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-05-02 12:55:00,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-05-02 12:55:00,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 215 states have (on average 1.1255813953488372) internal successors, (242), 215 states have internal predecessors, (242), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 246 transitions. [2021-05-02 12:55:00,197 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 246 transitions. Word has length 217 [2021-05-02 12:55:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:55:00,197 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 246 transitions. [2021-05-02 12:55:00,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 2.0609756097560976) internal successors, (169), 81 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 246 transitions. [2021-05-02 12:55:00,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-05-02 12:55:00,198 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:55:00,198 INFO L523 BasicCegarLoop]: trace histogram [104, 78, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:55:00,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-05-02 12:55:00,413 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:55:00,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:55:00,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1061127337, now seen corresponding path program 77 times [2021-05-02 12:55:00,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:55:00,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316048931] [2021-05-02 12:55:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:55:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:55:03,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:55:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:55:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 4029 proven. 6162 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 12:55:03,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:55:03,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316048931] [2021-05-02 12:55:03,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316048931] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:55:03,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728726771] [2021-05-02 12:55:03,333 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:55:03,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 105 check-sat command(s) [2021-05-02 12:55:03,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:55:03,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-02 12:55:03,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:55:03,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 4029 proven. 6162 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 12:55:03,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728726771] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:55:03,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:55:03,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81] total 83 [2021-05-02 12:55:03,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472193968] [2021-05-02 12:55:03,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 12:55:03,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:55:03,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 12:55:03,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 12:55:03,953 INFO L87 Difference]: Start difference. First operand 220 states and 246 transitions. Second operand has 83 states, 83 states have (on average 2.0602409638554215) internal successors, (171), 82 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:09,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:55:09,030 INFO L93 Difference]: Finished difference Result 278 states and 330 transitions. [2021-05-02 12:55:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-02 12:55:09,031 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0602409638554215) internal successors, (171), 82 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 219 [2021-05-02 12:55:09,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:55:09,031 INFO L225 Difference]: With dead ends: 278 [2021-05-02 12:55:09,031 INFO L226 Difference]: Without dead ends: 222 [2021-05-02 12:55:09,033 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3390 ImplicationChecksByTransitivity, 7579.2ms TimeCoverageRelationStatistics Valid=9802, Invalid=16280, Unknown=0, NotChecked=0, Total=26082 [2021-05-02 12:55:09,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-05-02 12:55:09,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-05-02 12:55:09,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.1244239631336406) internal successors, (244), 217 states have internal predecessors, (244), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:09,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 248 transitions. [2021-05-02 12:55:09,043 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 248 transitions. Word has length 219 [2021-05-02 12:55:09,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:55:09,043 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 248 transitions. [2021-05-02 12:55:09,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.0602409638554215) internal successors, (171), 82 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:09,043 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 248 transitions. [2021-05-02 12:55:09,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 12:55:09,044 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:55:09,044 INFO L523 BasicCegarLoop]: trace histogram [105, 79, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:55:09,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-05-02 12:55:09,245 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:55:09,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:55:09,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1166813004, now seen corresponding path program 78 times [2021-05-02 12:55:09,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:55:09,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761282565] [2021-05-02 12:55:09,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:55:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:55:12,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:55:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:55:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 4080 proven. 6320 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 12:55:12,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:55:12,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761282565] [2021-05-02 12:55:12,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761282565] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:55:12,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407183859] [2021-05-02 12:55:12,195 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:55:12,374 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2021-05-02 12:55:12,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:55:12,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 12:55:12,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:55:12,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:12,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:12,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:12,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:12,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:12,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:12,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:12,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:12,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:12,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:12,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:12,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:12,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:12,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:13,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:14,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:14,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:14,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:14,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:14,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:14,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:14,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 0 proven. 4705 refuted. 0 times theorem prover too weak. 6320 trivial. 0 not checked. [2021-05-02 12:55:14,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407183859] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:55:14,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:55:14,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 32] total 113 [2021-05-02 12:55:14,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248640101] [2021-05-02 12:55:14,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 113 states [2021-05-02 12:55:14,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:55:14,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-05-02 12:55:14,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3735, Invalid=8921, Unknown=0, NotChecked=0, Total=12656 [2021-05-02 12:55:14,256 INFO L87 Difference]: Start difference. First operand 222 states and 248 transitions. Second operand has 113 states, 112 states have (on average 2.0267857142857144) internal successors, (227), 111 states have internal predecessors, (227), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:23,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:55:23,816 INFO L93 Difference]: Finished difference Result 288 states and 343 transitions. [2021-05-02 12:55:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-05-02 12:55:23,817 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 2.0267857142857144) internal successors, (227), 111 states have internal predecessors, (227), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 221 [2021-05-02 12:55:23,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:55:23,817 INFO L225 Difference]: With dead ends: 288 [2021-05-02 12:55:23,817 INFO L226 Difference]: Without dead ends: 229 [2021-05-02 12:55:23,819 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8524 ImplicationChecksByTransitivity, 13227.9ms TimeCoverageRelationStatistics Valid=15521, Invalid=33985, Unknown=0, NotChecked=0, Total=49506 [2021-05-02 12:55:23,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-05-02 12:55:23,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 226. [2021-05-02 12:55:23,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 221 states have (on average 1.1266968325791855) internal successors, (249), 221 states have internal predecessors, (249), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 253 transitions. [2021-05-02 12:55:23,831 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 253 transitions. Word has length 221 [2021-05-02 12:55:23,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:55:23,832 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 253 transitions. [2021-05-02 12:55:23,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 113 states, 112 states have (on average 2.0267857142857144) internal successors, (227), 111 states have internal predecessors, (227), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 253 transitions. [2021-05-02 12:55:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-05-02 12:55:23,833 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:55:23,833 INFO L523 BasicCegarLoop]: trace histogram [107, 80, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:55:24,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:55:24,044 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:55:24,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:55:24,044 INFO L82 PathProgramCache]: Analyzing trace with hash 981133292, now seen corresponding path program 79 times [2021-05-02 12:55:24,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:55:24,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546682302] [2021-05-02 12:55:24,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:55:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:55:27,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:55:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:55:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 11449 backedges. 4293 proven. 6480 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 12:55:27,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:55:27,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546682302] [2021-05-02 12:55:27,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546682302] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:55:27,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479129909] [2021-05-02 12:55:27,132 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:55:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:55:27,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 12:55:27,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:55:27,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:27,690 INFO L134 CoverageAnalysis]: Checked inductivity of 11449 backedges. 4293 proven. 6480 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 12:55:27,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479129909] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:55:27,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:55:27,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-02 12:55:27,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943860479] [2021-05-02 12:55:27,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 12:55:27,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:55:27,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 12:55:27,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 12:55:27,692 INFO L87 Difference]: Start difference. First operand 226 states and 253 transitions. Second operand has 85 states, 85 states have (on average 2.0588235294117645) internal successors, (175), 84 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:33,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:55:33,168 INFO L93 Difference]: Finished difference Result 286 states and 340 transitions. [2021-05-02 12:55:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 12:55:33,169 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0588235294117645) internal successors, (175), 84 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 225 [2021-05-02 12:55:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:55:33,169 INFO L225 Difference]: With dead ends: 286 [2021-05-02 12:55:33,169 INFO L226 Difference]: Without dead ends: 228 [2021-05-02 12:55:33,170 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 8195.0ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-02 12:55:33,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-05-02 12:55:33,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-05-02 12:55:33,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 223 states have (on average 1.1255605381165918) internal successors, (251), 223 states have internal predecessors, (251), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 255 transitions. [2021-05-02 12:55:33,182 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 255 transitions. Word has length 225 [2021-05-02 12:55:33,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:55:33,182 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 255 transitions. [2021-05-02 12:55:33,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.0588235294117645) internal successors, (175), 84 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:33,182 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 255 transitions. [2021-05-02 12:55:33,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-02 12:55:33,183 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:55:33,183 INFO L523 BasicCegarLoop]: trace histogram [108, 81, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:55:33,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:55:33,388 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:55:33,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:55:33,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1122497655, now seen corresponding path program 80 times [2021-05-02 12:55:33,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:55:33,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829103680] [2021-05-02 12:55:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:55:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:55:36,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:55:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:55:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 4346 proven. 6642 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 12:55:36,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:55:36,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829103680] [2021-05-02 12:55:36,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829103680] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:55:36,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612823594] [2021-05-02 12:55:36,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:55:36,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:55:36,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:55:36,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-02 12:55:36,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:55:36,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:36,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 4346 proven. 6642 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 12:55:37,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612823594] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:55:37,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:55:37,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84] total 86 [2021-05-02 12:55:37,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712766063] [2021-05-02 12:55:37,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-02 12:55:37,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:55:37,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-02 12:55:37,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 12:55:37,116 INFO L87 Difference]: Start difference. First operand 228 states and 255 transitions. Second operand has 86 states, 86 states have (on average 2.058139534883721) internal successors, (177), 85 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:42,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:55:42,752 INFO L93 Difference]: Finished difference Result 288 states and 342 transitions. [2021-05-02 12:55:42,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 12:55:42,753 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.058139534883721) internal successors, (177), 85 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 227 [2021-05-02 12:55:42,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:55:42,754 INFO L225 Difference]: With dead ends: 288 [2021-05-02 12:55:42,754 INFO L226 Difference]: Without dead ends: 230 [2021-05-02 12:55:42,755 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3642 ImplicationChecksByTransitivity, 8348.3ms TimeCoverageRelationStatistics Valid=10543, Invalid=17513, Unknown=0, NotChecked=0, Total=28056 [2021-05-02 12:55:42,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-05-02 12:55:42,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-05-02 12:55:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.1244444444444444) internal successors, (253), 225 states have internal predecessors, (253), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:42,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 257 transitions. [2021-05-02 12:55:42,766 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 257 transitions. Word has length 227 [2021-05-02 12:55:42,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:55:42,766 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 257 transitions. [2021-05-02 12:55:42,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 2.058139534883721) internal successors, (177), 85 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:42,767 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 257 transitions. [2021-05-02 12:55:42,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-02 12:55:42,767 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:55:42,767 INFO L523 BasicCegarLoop]: trace histogram [109, 82, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:55:42,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:55:42,968 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:55:42,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:55:42,968 INFO L82 PathProgramCache]: Analyzing trace with hash 217758694, now seen corresponding path program 81 times [2021-05-02 12:55:42,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:55:42,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295988109] [2021-05-02 12:55:42,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:55:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:55:46,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:55:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:55:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 4399 proven. 6806 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 12:55:46,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:55:46,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295988109] [2021-05-02 12:55:46,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295988109] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:55:46,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689719650] [2021-05-02 12:55:46,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:55:46,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-05-02 12:55:46,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:55:46,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 12:55:46,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:55:46,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:46,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:46,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:46,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:46,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:46,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:46,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:46,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:46,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:46,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:46,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:46,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:46,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:46,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:47,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:48,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:48,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:48,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:48,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:48,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:48,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:48,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:48,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:48,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:48,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:48,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:55:48,438 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 0 proven. 5075 refuted. 0 times theorem prover too weak. 6806 trivial. 0 not checked. [2021-05-02 12:55:48,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689719650] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:55:48,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:55:48,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 33] total 117 [2021-05-02 12:55:48,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067982716] [2021-05-02 12:55:48,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 117 states [2021-05-02 12:55:48,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:55:48,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-05-02 12:55:48,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4013, Invalid=9559, Unknown=0, NotChecked=0, Total=13572 [2021-05-02 12:55:48,441 INFO L87 Difference]: Start difference. First operand 230 states and 257 transitions. Second operand has 117 states, 116 states have (on average 2.0258620689655173) internal successors, (235), 115 states have internal predecessors, (235), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:58,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:55:58,911 INFO L93 Difference]: Finished difference Result 298 states and 355 transitions. [2021-05-02 12:55:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-05-02 12:55:58,911 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 116 states have (on average 2.0258620689655173) internal successors, (235), 115 states have internal predecessors, (235), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2021-05-02 12:55:58,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:55:58,912 INFO L225 Difference]: With dead ends: 298 [2021-05-02 12:55:58,912 INFO L226 Difference]: Without dead ends: 237 [2021-05-02 12:55:58,914 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9148 ImplicationChecksByTransitivity, 14509.2ms TimeCoverageRelationStatistics Valid=16683, Invalid=36447, Unknown=0, NotChecked=0, Total=53130 [2021-05-02 12:55:58,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-05-02 12:55:58,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 234. [2021-05-02 12:55:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.1266375545851528) internal successors, (258), 229 states have internal predecessors, (258), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 262 transitions. [2021-05-02 12:55:58,926 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 262 transitions. Word has length 229 [2021-05-02 12:55:58,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:55:58,927 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 262 transitions. [2021-05-02 12:55:58,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 117 states, 116 states have (on average 2.0258620689655173) internal successors, (235), 115 states have internal predecessors, (235), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:55:58,927 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 262 transitions. [2021-05-02 12:55:58,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-02 12:55:58,928 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:55:58,928 INFO L523 BasicCegarLoop]: trace histogram [111, 83, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:55:59,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-05-02 12:55:59,128 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:55:59,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:55:59,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1059297694, now seen corresponding path program 82 times [2021-05-02 12:55:59,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:55:59,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035600933] [2021-05-02 12:55:59,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:55:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:56:02,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:56:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:56:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 4620 proven. 6972 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 12:56:02,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:56:02,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035600933] [2021-05-02 12:56:02,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035600933] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:56:02,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491460447] [2021-05-02 12:56:02,432 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:56:02,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:56:02,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:56:02,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 12:56:02,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:56:02,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:02,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 4620 proven. 6972 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 12:56:03,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491460447] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:56:03,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:56:03,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 12:56:03,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103654932] [2021-05-02 12:56:03,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 12:56:03,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:56:03,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 12:56:03,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 12:56:03,034 INFO L87 Difference]: Start difference. First operand 234 states and 262 transitions. Second operand has 88 states, 88 states have (on average 2.0568181818181817) internal successors, (181), 87 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:08,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:56:08,884 INFO L93 Difference]: Finished difference Result 296 states and 352 transitions. [2021-05-02 12:56:08,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 12:56:08,885 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0568181818181817) internal successors, (181), 87 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 233 [2021-05-02 12:56:08,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:56:08,886 INFO L225 Difference]: With dead ends: 296 [2021-05-02 12:56:08,886 INFO L226 Difference]: Without dead ends: 236 [2021-05-02 12:56:08,888 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 8771.9ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 12:56:08,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-05-02 12:56:08,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-05-02 12:56:08,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 231 states have (on average 1.1255411255411256) internal successors, (260), 231 states have internal predecessors, (260), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 264 transitions. [2021-05-02 12:56:08,901 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 264 transitions. Word has length 233 [2021-05-02 12:56:08,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:56:08,901 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 264 transitions. [2021-05-02 12:56:08,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.0568181818181817) internal successors, (181), 87 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:08,901 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 264 transitions. [2021-05-02 12:56:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-05-02 12:56:08,902 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:56:08,902 INFO L523 BasicCegarLoop]: trace histogram [112, 84, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:56:09,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:56:09,103 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:56:09,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:56:09,103 INFO L82 PathProgramCache]: Analyzing trace with hash 501600315, now seen corresponding path program 83 times [2021-05-02 12:56:09,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:56:09,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141048147] [2021-05-02 12:56:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:56:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:56:12,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:56:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:56:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 4675 proven. 7140 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 12:56:12,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:56:12,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141048147] [2021-05-02 12:56:12,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141048147] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:56:12,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828124543] [2021-05-02 12:56:12,523 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:56:12,651 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 113 check-sat command(s) [2021-05-02 12:56:12,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:56:12,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-02 12:56:12,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:56:12,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:12,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 4675 proven. 7140 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 12:56:13,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828124543] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:56:13,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:56:13,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87] total 89 [2021-05-02 12:56:13,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071108407] [2021-05-02 12:56:13,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 12:56:13,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:56:13,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 12:56:13,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 12:56:13,167 INFO L87 Difference]: Start difference. First operand 236 states and 264 transitions. Second operand has 89 states, 89 states have (on average 2.056179775280899) internal successors, (183), 88 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:19,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:56:19,280 INFO L93 Difference]: Finished difference Result 298 states and 354 transitions. [2021-05-02 12:56:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-02 12:56:19,280 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.056179775280899) internal successors, (183), 88 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 235 [2021-05-02 12:56:19,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:56:19,281 INFO L225 Difference]: With dead ends: 298 [2021-05-02 12:56:19,281 INFO L226 Difference]: Without dead ends: 238 [2021-05-02 12:56:19,282 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3903 ImplicationChecksByTransitivity, 9017.6ms TimeCoverageRelationStatistics Valid=11311, Invalid=18791, Unknown=0, NotChecked=0, Total=30102 [2021-05-02 12:56:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-05-02 12:56:19,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2021-05-02 12:56:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 233 states have (on average 1.1244635193133048) internal successors, (262), 233 states have internal predecessors, (262), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 266 transitions. [2021-05-02 12:56:19,296 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 266 transitions. Word has length 235 [2021-05-02 12:56:19,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:56:19,296 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 266 transitions. [2021-05-02 12:56:19,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 2.056179775280899) internal successors, (183), 88 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:19,297 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 266 transitions. [2021-05-02 12:56:19,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-02 12:56:19,298 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:56:19,298 INFO L523 BasicCegarLoop]: trace histogram [113, 85, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:56:19,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-05-02 12:56:19,501 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:56:19,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:56:19,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1425331096, now seen corresponding path program 84 times [2021-05-02 12:56:19,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:56:19,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997358393] [2021-05-02 12:56:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:56:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:56:23,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:56:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:56:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 4730 proven. 7310 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 12:56:23,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:56:23,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997358393] [2021-05-02 12:56:23,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997358393] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:56:23,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94545499] [2021-05-02 12:56:23,101 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:56:23,290 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 111 check-sat command(s) [2021-05-02 12:56:23,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:56:23,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 12:56:23,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:56:23,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:23,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:24,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:25,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:25,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:25,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:25,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:25,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:25,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:25,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:25,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:25,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:25,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:25,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:25,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:25,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 0 proven. 5459 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2021-05-02 12:56:25,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94545499] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:56:25,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:56:25,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 34] total 121 [2021-05-02 12:56:25,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884433686] [2021-05-02 12:56:25,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 121 states [2021-05-02 12:56:25,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:56:25,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2021-05-02 12:56:25,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4301, Invalid=10219, Unknown=0, NotChecked=0, Total=14520 [2021-05-02 12:56:25,531 INFO L87 Difference]: Start difference. First operand 238 states and 266 transitions. Second operand has 121 states, 120 states have (on average 2.025) internal successors, (243), 119 states have internal predecessors, (243), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:36,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:56:36,806 INFO L93 Difference]: Finished difference Result 308 states and 367 transitions. [2021-05-02 12:56:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-05-02 12:56:36,807 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 120 states have (on average 2.025) internal successors, (243), 119 states have internal predecessors, (243), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 237 [2021-05-02 12:56:36,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:56:36,808 INFO L225 Difference]: With dead ends: 308 [2021-05-02 12:56:36,808 INFO L226 Difference]: Without dead ends: 245 [2021-05-02 12:56:36,810 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9794 ImplicationChecksByTransitivity, 15766.4ms TimeCoverageRelationStatistics Valid=17887, Invalid=38995, Unknown=0, NotChecked=0, Total=56882 [2021-05-02 12:56:36,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-05-02 12:56:36,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 242. [2021-05-02 12:56:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.1265822784810127) internal successors, (267), 237 states have internal predecessors, (267), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 271 transitions. [2021-05-02 12:56:36,822 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 271 transitions. Word has length 237 [2021-05-02 12:56:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:56:36,822 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 271 transitions. [2021-05-02 12:56:36,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 121 states, 120 states have (on average 2.025) internal successors, (243), 119 states have internal predecessors, (243), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:36,823 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 271 transitions. [2021-05-02 12:56:36,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-05-02 12:56:36,823 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:56:36,823 INFO L523 BasicCegarLoop]: trace histogram [115, 86, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:56:37,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:56:37,024 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:56:37,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:56:37,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1942052816, now seen corresponding path program 85 times [2021-05-02 12:56:37,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:56:37,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000931671] [2021-05-02 12:56:37,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:56:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:56:40,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:56:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:56:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 13225 backedges. 4959 proven. 7482 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 12:56:40,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:56:40,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000931671] [2021-05-02 12:56:40,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000931671] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:56:40,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192462351] [2021-05-02 12:56:40,766 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:56:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:56:40,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 12:56:40,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:56:40,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:40,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:41,394 INFO L134 CoverageAnalysis]: Checked inductivity of 13225 backedges. 4959 proven. 7482 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 12:56:41,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192462351] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:56:41,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:56:41,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-02 12:56:41,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092651174] [2021-05-02 12:56:41,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 12:56:41,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:56:41,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 12:56:41,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 12:56:41,395 INFO L87 Difference]: Start difference. First operand 242 states and 271 transitions. Second operand has 91 states, 91 states have (on average 2.0549450549450547) internal successors, (187), 90 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:47,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:56:47,923 INFO L93 Difference]: Finished difference Result 306 states and 364 transitions. [2021-05-02 12:56:47,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 12:56:47,924 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.0549450549450547) internal successors, (187), 90 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 241 [2021-05-02 12:56:47,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:56:47,924 INFO L225 Difference]: With dead ends: 306 [2021-05-02 12:56:47,924 INFO L226 Difference]: Without dead ends: 244 [2021-05-02 12:56:47,926 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 9792.5ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-02 12:56:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-05-02 12:56:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-05-02 12:56:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 239 states have (on average 1.1255230125523012) internal successors, (269), 239 states have internal predecessors, (269), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 273 transitions. [2021-05-02 12:56:47,945 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 273 transitions. Word has length 241 [2021-05-02 12:56:47,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:56:47,945 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 273 transitions. [2021-05-02 12:56:47,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.0549450549450547) internal successors, (187), 90 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 273 transitions. [2021-05-02 12:56:47,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-05-02 12:56:47,946 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:56:47,946 INFO L523 BasicCegarLoop]: trace histogram [116, 87, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:56:48,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:56:48,161 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:56:48,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:56:48,161 INFO L82 PathProgramCache]: Analyzing trace with hash -840586899, now seen corresponding path program 86 times [2021-05-02 12:56:48,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:56:48,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147493299] [2021-05-02 12:56:48,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:56:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:56:52,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:56:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:56:52,089 INFO L134 CoverageAnalysis]: Checked inductivity of 13456 backedges. 5016 proven. 7656 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 12:56:52,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:56:52,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147493299] [2021-05-02 12:56:52,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147493299] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:56:52,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544298077] [2021-05-02 12:56:52,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:56:52,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:56:52,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:56:52,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 89 conjunts are in the unsatisfiable core [2021-05-02 12:56:52,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:56:52,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:56:52,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13456 backedges. 5016 proven. 7656 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 12:56:52,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544298077] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:56:52,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:56:52,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90] total 92 [2021-05-02 12:56:52,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515024469] [2021-05-02 12:56:52,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 12:56:52,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:56:52,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 12:56:52,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 12:56:52,735 INFO L87 Difference]: Start difference. First operand 244 states and 273 transitions. Second operand has 92 states, 92 states have (on average 2.0543478260869565) internal successors, (189), 91 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:59,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:56:59,448 INFO L93 Difference]: Finished difference Result 308 states and 366 transitions. [2021-05-02 12:56:59,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 12:56:59,449 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0543478260869565) internal successors, (189), 91 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 243 [2021-05-02 12:56:59,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:56:59,450 INFO L225 Difference]: With dead ends: 308 [2021-05-02 12:56:59,450 INFO L226 Difference]: Without dead ends: 246 [2021-05-02 12:56:59,451 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4173 ImplicationChecksByTransitivity, 10124.6ms TimeCoverageRelationStatistics Valid=12106, Invalid=20114, Unknown=0, NotChecked=0, Total=32220 [2021-05-02 12:56:59,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-05-02 12:56:59,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-05-02 12:56:59,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 241 states have (on average 1.1244813278008299) internal successors, (271), 241 states have internal predecessors, (271), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:59,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 275 transitions. [2021-05-02 12:56:59,463 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 275 transitions. Word has length 243 [2021-05-02 12:56:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:56:59,463 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 275 transitions. [2021-05-02 12:56:59,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 2.0543478260869565) internal successors, (189), 91 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:56:59,464 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 275 transitions. [2021-05-02 12:56:59,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-02 12:56:59,464 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:56:59,464 INFO L523 BasicCegarLoop]: trace histogram [117, 88, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:56:59,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:56:59,665 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:56:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:56:59,665 INFO L82 PathProgramCache]: Analyzing trace with hash 807272394, now seen corresponding path program 87 times [2021-05-02 12:56:59,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:56:59,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109681277] [2021-05-02 12:56:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:56:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:57:03,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:57:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:57:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 13689 backedges. 5073 proven. 7832 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 12:57:03,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:57:03,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109681277] [2021-05-02 12:57:03,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109681277] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:57:03,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115794834] [2021-05-02 12:57:03,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:57:03,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-02 12:57:03,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:57:03,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 12:57:03,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:57:04,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:04,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:05,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:06,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:06,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:06,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:06,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:06,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 13689 backedges. 0 proven. 5857 refuted. 0 times theorem prover too weak. 7832 trivial. 0 not checked. [2021-05-02 12:57:06,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115794834] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:57:06,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:57:06,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 35] total 125 [2021-05-02 12:57:06,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645637250] [2021-05-02 12:57:06,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 125 states [2021-05-02 12:57:06,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:57:06,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2021-05-02 12:57:06,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4599, Invalid=10901, Unknown=0, NotChecked=0, Total=15500 [2021-05-02 12:57:06,284 INFO L87 Difference]: Start difference. First operand 246 states and 275 transitions. Second operand has 125 states, 124 states have (on average 2.024193548387097) internal successors, (251), 123 states have internal predecessors, (251), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:57:19,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:57:19,094 INFO L93 Difference]: Finished difference Result 318 states and 379 transitions. [2021-05-02 12:57:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-05-02 12:57:19,095 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 124 states have (on average 2.024193548387097) internal successors, (251), 123 states have internal predecessors, (251), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 245 [2021-05-02 12:57:19,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:57:19,096 INFO L225 Difference]: With dead ends: 318 [2021-05-02 12:57:19,096 INFO L226 Difference]: Without dead ends: 253 [2021-05-02 12:57:19,098 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10462 ImplicationChecksByTransitivity, 17783.8ms TimeCoverageRelationStatistics Valid=19133, Invalid=41629, Unknown=0, NotChecked=0, Total=60762 [2021-05-02 12:57:19,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-05-02 12:57:19,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 250. [2021-05-02 12:57:19,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 245 states have (on average 1.126530612244898) internal successors, (276), 245 states have internal predecessors, (276), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:57:19,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 280 transitions. [2021-05-02 12:57:19,111 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 280 transitions. Word has length 245 [2021-05-02 12:57:19,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:57:19,111 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 280 transitions. [2021-05-02 12:57:19,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 125 states, 124 states have (on average 2.024193548387097) internal successors, (251), 123 states have internal predecessors, (251), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:57:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 280 transitions. [2021-05-02 12:57:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-05-02 12:57:19,112 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:57:19,112 INFO L523 BasicCegarLoop]: trace histogram [119, 89, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:57:19,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:57:19,313 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:57:19,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:57:19,313 INFO L82 PathProgramCache]: Analyzing trace with hash 697834114, now seen corresponding path program 88 times [2021-05-02 12:57:19,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:57:19,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286813085] [2021-05-02 12:57:19,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:57:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:57:23,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:57:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:57:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 14161 backedges. 5310 proven. 8010 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 12:57:23,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:57:23,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286813085] [2021-05-02 12:57:23,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286813085] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:57:23,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509333204] [2021-05-02 12:57:23,582 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:57:23,661 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:57:23,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:57:23,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 12:57:23,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:57:23,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:23,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 14161 backedges. 5310 proven. 8010 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 12:57:24,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509333204] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:57:24,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:57:24,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 12:57:24,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591858004] [2021-05-02 12:57:24,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 12:57:24,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:57:24,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 12:57:24,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 12:57:24,302 INFO L87 Difference]: Start difference. First operand 250 states and 280 transitions. Second operand has 94 states, 94 states have (on average 2.0531914893617023) internal successors, (193), 93 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:57:31,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:57:31,628 INFO L93 Difference]: Finished difference Result 316 states and 376 transitions. [2021-05-02 12:57:31,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 12:57:31,628 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0531914893617023) internal successors, (193), 93 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 249 [2021-05-02 12:57:31,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:57:31,629 INFO L225 Difference]: With dead ends: 316 [2021-05-02 12:57:31,629 INFO L226 Difference]: Without dead ends: 252 [2021-05-02 12:57:31,631 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 11087.6ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 12:57:31,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-05-02 12:57:31,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-05-02 12:57:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 247 states have (on average 1.125506072874494) internal successors, (278), 247 states have internal predecessors, (278), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:57:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 282 transitions. [2021-05-02 12:57:31,650 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 282 transitions. Word has length 249 [2021-05-02 12:57:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:57:31,651 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 282 transitions. [2021-05-02 12:57:31,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.0531914893617023) internal successors, (193), 93 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:57:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 282 transitions. [2021-05-02 12:57:31,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-05-02 12:57:31,652 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:57:31,652 INFO L523 BasicCegarLoop]: trace histogram [120, 90, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:57:31,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:57:31,873 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:57:31,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:57:31,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1856276705, now seen corresponding path program 89 times [2021-05-02 12:57:31,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:57:31,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104018150] [2021-05-02 12:57:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:57:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:57:36,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:57:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:57:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 14400 backedges. 5369 proven. 8190 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 12:57:36,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:57:36,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104018150] [2021-05-02 12:57:36,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104018150] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:57:36,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380883546] [2021-05-02 12:57:36,302 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:57:36,440 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 121 check-sat command(s) [2021-05-02 12:57:36,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:57:36,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 92 conjunts are in the unsatisfiable core [2021-05-02 12:57:36,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:57:36,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:36,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:37,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:37,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:37,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:37,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 14400 backedges. 5369 proven. 8190 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 12:57:37,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380883546] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:57:37,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:57:37,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93] total 95 [2021-05-02 12:57:37,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416957361] [2021-05-02 12:57:37,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 12:57:37,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:57:37,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 12:57:37,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 12:57:37,105 INFO L87 Difference]: Start difference. First operand 252 states and 282 transitions. Second operand has 95 states, 95 states have (on average 2.0526315789473686) internal successors, (195), 94 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:57:44,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:57:44,766 INFO L93 Difference]: Finished difference Result 318 states and 378 transitions. [2021-05-02 12:57:44,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-02 12:57:44,766 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.0526315789473686) internal successors, (195), 94 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 251 [2021-05-02 12:57:44,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:57:44,767 INFO L225 Difference]: With dead ends: 318 [2021-05-02 12:57:44,767 INFO L226 Difference]: Without dead ends: 254 [2021-05-02 12:57:44,768 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4452 ImplicationChecksByTransitivity, 11493.4ms TimeCoverageRelationStatistics Valid=12928, Invalid=21482, Unknown=0, NotChecked=0, Total=34410 [2021-05-02 12:57:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-05-02 12:57:44,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-05-02 12:57:44,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 249 states have (on average 1.1244979919678715) internal successors, (280), 249 states have internal predecessors, (280), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:57:44,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 284 transitions. [2021-05-02 12:57:44,782 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 284 transitions. Word has length 251 [2021-05-02 12:57:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:57:44,782 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 284 transitions. [2021-05-02 12:57:44,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 2.0526315789473686) internal successors, (195), 94 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:57:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 284 transitions. [2021-05-02 12:57:44,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-05-02 12:57:44,783 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:57:44,783 INFO L523 BasicCegarLoop]: trace histogram [121, 91, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:57:44,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:57:44,983 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:57:44,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:57:44,984 INFO L82 PathProgramCache]: Analyzing trace with hash 364519548, now seen corresponding path program 90 times [2021-05-02 12:57:44,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:57:44,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320326953] [2021-05-02 12:57:44,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:57:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:57:49,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:57:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:57:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 14641 backedges. 5428 proven. 8372 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 12:57:49,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:57:49,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320326953] [2021-05-02 12:57:49,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320326953] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:57:49,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977841043] [2021-05-02 12:57:49,508 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:57:49,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 119 check-sat command(s) [2021-05-02 12:57:49,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:57:49,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 12:57:49,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:57:50,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:50,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:51,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:52,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:52,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:52,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:52,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:52,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:52,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:52,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:52,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:52,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:52,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:52,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:52,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:52,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:57:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 14641 backedges. 0 proven. 6269 refuted. 0 times theorem prover too weak. 8372 trivial. 0 not checked. [2021-05-02 12:57:52,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977841043] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:57:52,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:57:52,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 36] total 129 [2021-05-02 12:57:52,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032828259] [2021-05-02 12:57:52,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 129 states [2021-05-02 12:57:52,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:57:52,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2021-05-02 12:57:52,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4907, Invalid=11605, Unknown=0, NotChecked=0, Total=16512 [2021-05-02 12:57:52,646 INFO L87 Difference]: Start difference. First operand 254 states and 284 transitions. Second operand has 129 states, 128 states have (on average 2.0234375) internal successors, (259), 127 states have internal predecessors, (259), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:58:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:58:07,389 INFO L93 Difference]: Finished difference Result 328 states and 391 transitions. [2021-05-02 12:58:07,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-05-02 12:58:07,390 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 128 states have (on average 2.0234375) internal successors, (259), 127 states have internal predecessors, (259), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 253 [2021-05-02 12:58:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:58:07,391 INFO L225 Difference]: With dead ends: 328 [2021-05-02 12:58:07,391 INFO L226 Difference]: Without dead ends: 261 [2021-05-02 12:58:07,393 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11152 ImplicationChecksByTransitivity, 20440.1ms TimeCoverageRelationStatistics Valid=20421, Invalid=44349, Unknown=0, NotChecked=0, Total=64770 [2021-05-02 12:58:07,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-05-02 12:58:07,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 258. [2021-05-02 12:58:07,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 253 states have (on average 1.1264822134387351) internal successors, (285), 253 states have internal predecessors, (285), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:58:07,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 289 transitions. [2021-05-02 12:58:07,420 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 289 transitions. Word has length 253 [2021-05-02 12:58:07,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:58:07,420 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 289 transitions. [2021-05-02 12:58:07,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 129 states, 128 states have (on average 2.0234375) internal successors, (259), 127 states have internal predecessors, (259), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:58:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 289 transitions. [2021-05-02 12:58:07,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-02 12:58:07,421 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:58:07,421 INFO L523 BasicCegarLoop]: trace histogram [123, 92, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:58:07,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-05-02 12:58:07,625 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:58:07,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:58:07,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1232316852, now seen corresponding path program 91 times [2021-05-02 12:58:07,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:58:07,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081473954] [2021-05-02 12:58:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:58:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:58:12,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:58:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:58:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 15129 backedges. 5673 proven. 8556 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 12:58:12,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:58:12,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081473954] [2021-05-02 12:58:12,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081473954] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:58:12,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023220043] [2021-05-02 12:58:12,403 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:58:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:58:12,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 12:58:12,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:58:12,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:12,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15129 backedges. 5673 proven. 8556 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 12:58:13,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023220043] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:58:13,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:58:13,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-02 12:58:13,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353444084] [2021-05-02 12:58:13,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 12:58:13,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:58:13,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 12:58:13,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 12:58:13,233 INFO L87 Difference]: Start difference. First operand 258 states and 289 transitions. Second operand has 97 states, 97 states have (on average 2.051546391752577) internal successors, (199), 96 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:58:21,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:58:21,526 INFO L93 Difference]: Finished difference Result 326 states and 388 transitions. [2021-05-02 12:58:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 12:58:21,527 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.051546391752577) internal successors, (199), 96 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 257 [2021-05-02 12:58:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:58:21,528 INFO L225 Difference]: With dead ends: 326 [2021-05-02 12:58:21,528 INFO L226 Difference]: Without dead ends: 260 [2021-05-02 12:58:21,529 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 12480.6ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-02 12:58:21,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-05-02 12:58:21,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-05-02 12:58:21,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 255 states have (on average 1.1254901960784314) internal successors, (287), 255 states have internal predecessors, (287), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:58:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 291 transitions. [2021-05-02 12:58:21,555 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 291 transitions. Word has length 257 [2021-05-02 12:58:21,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:58:21,555 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 291 transitions. [2021-05-02 12:58:21,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.051546391752577) internal successors, (199), 96 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:58:21,555 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 291 transitions. [2021-05-02 12:58:21,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-05-02 12:58:21,556 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:58:21,556 INFO L523 BasicCegarLoop]: trace histogram [124, 93, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:58:21,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:58:21,756 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:58:21,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:58:21,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1005381295, now seen corresponding path program 92 times [2021-05-02 12:58:21,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:58:21,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304128900] [2021-05-02 12:58:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:58:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:58:26,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:58:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:58:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 15376 backedges. 5734 proven. 8742 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 12:58:26,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:58:26,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304128900] [2021-05-02 12:58:26,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304128900] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:58:26,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909099987] [2021-05-02 12:58:26,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:58:26,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:58:26,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:58:26,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 95 conjunts are in the unsatisfiable core [2021-05-02 12:58:26,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:58:26,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:26,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 15376 backedges. 5734 proven. 8742 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 12:58:27,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909099987] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:58:27,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:58:27,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96] total 98 [2021-05-02 12:58:27,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988270954] [2021-05-02 12:58:27,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2021-05-02 12:58:27,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:58:27,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-05-02 12:58:27,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 12:58:27,414 INFO L87 Difference]: Start difference. First operand 260 states and 291 transitions. Second operand has 98 states, 98 states have (on average 2.0510204081632653) internal successors, (201), 97 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:58:35,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:58:35,408 INFO L93 Difference]: Finished difference Result 328 states and 390 transitions. [2021-05-02 12:58:35,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 12:58:35,409 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.0510204081632653) internal successors, (201), 97 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 259 [2021-05-02 12:58:35,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:58:35,410 INFO L225 Difference]: With dead ends: 328 [2021-05-02 12:58:35,410 INFO L226 Difference]: Without dead ends: 262 [2021-05-02 12:58:35,411 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4740 ImplicationChecksByTransitivity, 12234.9ms TimeCoverageRelationStatistics Valid=13777, Invalid=22895, Unknown=0, NotChecked=0, Total=36672 [2021-05-02 12:58:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-05-02 12:58:35,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-05-02 12:58:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 257 states have (on average 1.1245136186770428) internal successors, (289), 257 states have internal predecessors, (289), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:58:35,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 293 transitions. [2021-05-02 12:58:35,425 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 293 transitions. Word has length 259 [2021-05-02 12:58:35,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:58:35,425 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 293 transitions. [2021-05-02 12:58:35,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 98 states, 98 states have (on average 2.0510204081632653) internal successors, (201), 97 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:58:35,426 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 293 transitions. [2021-05-02 12:58:35,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-05-02 12:58:35,426 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:58:35,427 INFO L523 BasicCegarLoop]: trace histogram [125, 94, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:58:35,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,94 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:58:35,627 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:58:35,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:58:35,627 INFO L82 PathProgramCache]: Analyzing trace with hash 345314734, now seen corresponding path program 93 times [2021-05-02 12:58:35,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:58:35,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705359252] [2021-05-02 12:58:35,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:58:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:58:40,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:58:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:58:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 15625 backedges. 5795 proven. 8930 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 12:58:40,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:58:40,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705359252] [2021-05-02 12:58:40,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705359252] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:58:40,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042903606] [2021-05-02 12:58:40,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:58:40,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2021-05-02 12:58:40,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:58:40,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 12:58:40,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:58:41,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:41,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:42,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:58:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 15625 backedges. 0 proven. 6695 refuted. 0 times theorem prover too weak. 8930 trivial. 0 not checked. [2021-05-02 12:58:43,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042903606] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:58:43,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:58:43,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 37] total 133 [2021-05-02 12:58:43,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11816276] [2021-05-02 12:58:43,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 133 states [2021-05-02 12:58:43,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:58:43,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2021-05-02 12:58:43,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5225, Invalid=12331, Unknown=0, NotChecked=0, Total=17556 [2021-05-02 12:58:43,985 INFO L87 Difference]: Start difference. First operand 262 states and 293 transitions. Second operand has 133 states, 132 states have (on average 2.022727272727273) internal successors, (267), 131 states have internal predecessors, (267), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:58:59,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:58:59,767 INFO L93 Difference]: Finished difference Result 338 states and 403 transitions. [2021-05-02 12:58:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2021-05-02 12:58:59,768 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 132 states have (on average 2.022727272727273) internal successors, (267), 131 states have internal predecessors, (267), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 261 [2021-05-02 12:58:59,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:58:59,769 INFO L225 Difference]: With dead ends: 338 [2021-05-02 12:58:59,769 INFO L226 Difference]: Without dead ends: 269 [2021-05-02 12:58:59,771 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11864 ImplicationChecksByTransitivity, 22122.1ms TimeCoverageRelationStatistics Valid=21751, Invalid=47155, Unknown=0, NotChecked=0, Total=68906 [2021-05-02 12:58:59,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-05-02 12:58:59,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 266. [2021-05-02 12:58:59,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 261 states have (on average 1.1264367816091954) internal successors, (294), 261 states have internal predecessors, (294), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:58:59,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 298 transitions. [2021-05-02 12:58:59,786 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 298 transitions. Word has length 261 [2021-05-02 12:58:59,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:58:59,786 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 298 transitions. [2021-05-02 12:58:59,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 133 states, 132 states have (on average 2.022727272727273) internal successors, (267), 131 states have internal predecessors, (267), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:58:59,786 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 298 transitions. [2021-05-02 12:58:59,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-05-02 12:58:59,787 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:58:59,787 INFO L523 BasicCegarLoop]: trace histogram [127, 95, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:58:59,987 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:58:59,987 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:58:59,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:58:59,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1851265690, now seen corresponding path program 94 times [2021-05-02 12:58:59,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:58:59,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323480963] [2021-05-02 12:58:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:59:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:59:05,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:59:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:59:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 16129 backedges. 6048 proven. 9120 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 12:59:05,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:59:05,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323480963] [2021-05-02 12:59:05,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323480963] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:59:05,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174149882] [2021-05-02 12:59:05,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:59:05,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:59:05,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:59:05,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 12:59:05,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:59:05,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:05,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 16129 backedges. 6048 proven. 9120 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 12:59:06,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174149882] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:59:06,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:59:06,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-02 12:59:06,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184607720] [2021-05-02 12:59:06,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 12:59:06,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:59:06,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 12:59:06,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 12:59:06,265 INFO L87 Difference]: Start difference. First operand 266 states and 298 transitions. Second operand has 100 states, 100 states have (on average 2.05) internal successors, (205), 99 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:59:15,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:59:15,184 INFO L93 Difference]: Finished difference Result 336 states and 400 transitions. [2021-05-02 12:59:15,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 12:59:15,185 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.05) internal successors, (205), 99 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 265 [2021-05-02 12:59:15,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:59:15,186 INFO L225 Difference]: With dead ends: 336 [2021-05-02 12:59:15,186 INFO L226 Difference]: Without dead ends: 268 [2021-05-02 12:59:15,188 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 13591.5ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-02 12:59:15,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-05-02 12:59:15,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2021-05-02 12:59:15,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 263 states have (on average 1.1254752851711027) internal successors, (296), 263 states have internal predecessors, (296), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:59:15,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 300 transitions. [2021-05-02 12:59:15,202 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 300 transitions. Word has length 265 [2021-05-02 12:59:15,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:59:15,202 INFO L480 AbstractCegarLoop]: Abstraction has 268 states and 300 transitions. [2021-05-02 12:59:15,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.05) internal successors, (205), 99 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:59:15,202 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 300 transitions. [2021-05-02 12:59:15,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-05-02 12:59:15,203 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:59:15,203 INFO L523 BasicCegarLoop]: trace histogram [128, 96, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:59:15,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2021-05-02 12:59:15,404 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:59:15,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:59:15,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1755287549, now seen corresponding path program 95 times [2021-05-02 12:59:15,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:59:15,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108588084] [2021-05-02 12:59:15,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:59:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:59:20,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:59:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:59:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16384 backedges. 6111 proven. 9312 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 12:59:20,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:59:20,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108588084] [2021-05-02 12:59:20,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108588084] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:59:20,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668885579] [2021-05-02 12:59:20,815 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:59:20,963 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 129 check-sat command(s) [2021-05-02 12:59:20,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:59:20,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 12:59:20,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:59:20,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:20,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:20,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 16384 backedges. 6111 proven. 9312 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 12:59:21,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668885579] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:59:21,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:59:21,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99] total 101 [2021-05-02 12:59:21,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143162095] [2021-05-02 12:59:21,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2021-05-02 12:59:21,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:59:21,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-05-02 12:59:21,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 12:59:21,755 INFO L87 Difference]: Start difference. First operand 268 states and 300 transitions. Second operand has 101 states, 101 states have (on average 2.0495049504950495) internal successors, (207), 100 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:59:30,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:59:30,955 INFO L93 Difference]: Finished difference Result 338 states and 402 transitions. [2021-05-02 12:59:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-02 12:59:30,956 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0495049504950495) internal successors, (207), 100 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 267 [2021-05-02 12:59:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:59:30,957 INFO L225 Difference]: With dead ends: 338 [2021-05-02 12:59:30,957 INFO L226 Difference]: Without dead ends: 270 [2021-05-02 12:59:30,958 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5037 ImplicationChecksByTransitivity, 13942.3ms TimeCoverageRelationStatistics Valid=14653, Invalid=24353, Unknown=0, NotChecked=0, Total=39006 [2021-05-02 12:59:30,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-05-02 12:59:30,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-05-02 12:59:30,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 265 states have (on average 1.1245283018867924) internal successors, (298), 265 states have internal predecessors, (298), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:59:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 302 transitions. [2021-05-02 12:59:30,973 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 302 transitions. Word has length 267 [2021-05-02 12:59:30,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:59:30,973 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 302 transitions. [2021-05-02 12:59:30,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 101 states, 101 states have (on average 2.0495049504950495) internal successors, (207), 100 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:59:30,973 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 302 transitions. [2021-05-02 12:59:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-02 12:59:30,974 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:59:30,974 INFO L523 BasicCegarLoop]: trace histogram [129, 97, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:59:31,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-05-02 12:59:31,175 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:59:31,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:59:31,175 INFO L82 PathProgramCache]: Analyzing trace with hash 285392736, now seen corresponding path program 96 times [2021-05-02 12:59:31,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:59:31,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593203166] [2021-05-02 12:59:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:59:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:59:36,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:59:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:59:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 16641 backedges. 6174 proven. 9506 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 12:59:36,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:59:36,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593203166] [2021-05-02 12:59:36,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593203166] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:59:36,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080049423] [2021-05-02 12:59:36,890 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:59:37,171 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2021-05-02 12:59:37,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:59:37,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 12:59:37,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:59:37,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:37,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:37,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:37,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:37,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:37,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:37,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:37,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:38,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:39,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:40,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:40,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:40,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:40,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:40,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:40,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:40,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:40,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:40,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:40,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:40,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:40,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:40,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:59:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16641 backedges. 0 proven. 7135 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-05-02 12:59:40,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080049423] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:59:40,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:59:40,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 38] total 137 [2021-05-02 12:59:40,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435140706] [2021-05-02 12:59:40,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 137 states [2021-05-02 12:59:40,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:59:40,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2021-05-02 12:59:40,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5553, Invalid=13079, Unknown=0, NotChecked=0, Total=18632 [2021-05-02 12:59:40,661 INFO L87 Difference]: Start difference. First operand 270 states and 302 transitions. Second operand has 137 states, 136 states have (on average 2.0220588235294117) internal successors, (275), 135 states have internal predecessors, (275), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:59:58,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:59:58,236 INFO L93 Difference]: Finished difference Result 348 states and 415 transitions. [2021-05-02 12:59:58,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2021-05-02 12:59:58,237 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 136 states have (on average 2.0220588235294117) internal successors, (275), 135 states have internal predecessors, (275), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 269 [2021-05-02 12:59:58,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:59:58,238 INFO L225 Difference]: With dead ends: 348 [2021-05-02 12:59:58,238 INFO L226 Difference]: Without dead ends: 277 [2021-05-02 12:59:58,241 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12598 ImplicationChecksByTransitivity, 24766.2ms TimeCoverageRelationStatistics Valid=23123, Invalid=50047, Unknown=0, NotChecked=0, Total=73170 [2021-05-02 12:59:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-05-02 12:59:58,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 274. [2021-05-02 12:59:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 269 states have (on average 1.1263940520446096) internal successors, (303), 269 states have internal predecessors, (303), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:59:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 307 transitions. [2021-05-02 12:59:58,269 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 307 transitions. Word has length 269 [2021-05-02 12:59:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:59:58,269 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 307 transitions. [2021-05-02 12:59:58,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 137 states, 136 states have (on average 2.0220588235294117) internal successors, (275), 135 states have internal predecessors, (275), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:59:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 307 transitions. [2021-05-02 12:59:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-05-02 12:59:58,270 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:59:58,270 INFO L523 BasicCegarLoop]: trace histogram [131, 98, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:59:58,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:59:58,473 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:59:58,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:59:58,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1410385304, now seen corresponding path program 97 times [2021-05-02 12:59:58,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:59:58,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361840130] [2021-05-02 12:59:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:59:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:00:04,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:00:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:00:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 17161 backedges. 6435 proven. 9702 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 13:00:04,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:00:04,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361840130] [2021-05-02 13:00:04,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361840130] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:00:04,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350558002] [2021-05-02 13:00:04,904 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:00:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:00:04,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 13:00:04,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:00:05,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:05,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 17161 backedges. 6435 proven. 9702 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 13:00:06,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350558002] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:00:06,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:00:06,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-02 13:00:06,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305493005] [2021-05-02 13:00:06,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 13:00:06,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:00:06,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 13:00:06,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 13:00:06,025 INFO L87 Difference]: Start difference. First operand 274 states and 307 transitions. Second operand has 103 states, 103 states have (on average 2.0485436893203883) internal successors, (211), 102 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:00:17,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:00:17,743 INFO L93 Difference]: Finished difference Result 346 states and 412 transitions. [2021-05-02 13:00:17,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 13:00:17,744 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0485436893203883) internal successors, (211), 102 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 273 [2021-05-02 13:00:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:00:17,746 INFO L225 Difference]: With dead ends: 346 [2021-05-02 13:00:17,746 INFO L226 Difference]: Without dead ends: 276 [2021-05-02 13:00:17,747 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 17279.0ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-02 13:00:17,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-05-02 13:00:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-05-02 13:00:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.1254612546125462) internal successors, (305), 271 states have internal predecessors, (305), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:00:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 309 transitions. [2021-05-02 13:00:17,763 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 309 transitions. Word has length 273 [2021-05-02 13:00:17,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:00:17,763 INFO L480 AbstractCegarLoop]: Abstraction has 276 states and 309 transitions. [2021-05-02 13:00:17,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0485436893203883) internal successors, (211), 102 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:00:17,763 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 309 transitions. [2021-05-02 13:00:17,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-05-02 13:00:17,764 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:00:17,765 INFO L523 BasicCegarLoop]: trace histogram [132, 99, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:00:17,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:00:17,966 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:00:17,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:00:17,967 INFO L82 PathProgramCache]: Analyzing trace with hash -803251403, now seen corresponding path program 98 times [2021-05-02 13:00:17,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:00:17,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717554558] [2021-05-02 13:00:17,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:00:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:00:25,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:00:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:00:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 17424 backedges. 6500 proven. 9900 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 13:00:25,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:00:25,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717554558] [2021-05-02 13:00:25,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717554558] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:00:25,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856839731] [2021-05-02 13:00:25,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:00:25,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:00:25,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:00:25,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 101 conjunts are in the unsatisfiable core [2021-05-02 13:00:25,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:00:25,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:25,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 17424 backedges. 6500 proven. 9900 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 13:00:26,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856839731] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:00:26,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:00:26,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 102] total 104 [2021-05-02 13:00:26,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416832999] [2021-05-02 13:00:26,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 13:00:26,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:00:26,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 13:00:26,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 13:00:26,291 INFO L87 Difference]: Start difference. First operand 276 states and 309 transitions. Second operand has 104 states, 104 states have (on average 2.048076923076923) internal successors, (213), 103 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:00:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:00:38,190 INFO L93 Difference]: Finished difference Result 348 states and 414 transitions. [2021-05-02 13:00:38,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 13:00:38,192 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.048076923076923) internal successors, (213), 103 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 275 [2021-05-02 13:00:38,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:00:38,192 INFO L225 Difference]: With dead ends: 348 [2021-05-02 13:00:38,192 INFO L226 Difference]: Without dead ends: 278 [2021-05-02 13:00:38,195 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5343 ImplicationChecksByTransitivity, 18186.0ms TimeCoverageRelationStatistics Valid=15556, Invalid=25856, Unknown=0, NotChecked=0, Total=41412 [2021-05-02 13:00:38,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-05-02 13:00:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2021-05-02 13:00:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 273 states have (on average 1.1245421245421245) internal successors, (307), 273 states have internal predecessors, (307), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:00:38,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 311 transitions. [2021-05-02 13:00:38,211 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 311 transitions. Word has length 275 [2021-05-02 13:00:38,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:00:38,211 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 311 transitions. [2021-05-02 13:00:38,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 2.048076923076923) internal successors, (213), 103 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:00:38,211 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 311 transitions. [2021-05-02 13:00:38,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-05-02 13:00:38,212 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:00:38,213 INFO L523 BasicCegarLoop]: trace histogram [133, 100, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:00:38,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,100 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:00:38,436 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:00:38,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:00:38,436 INFO L82 PathProgramCache]: Analyzing trace with hash -2099315310, now seen corresponding path program 99 times [2021-05-02 13:00:38,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:00:38,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023845369] [2021-05-02 13:00:38,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:00:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:00:45,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:00:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:00:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 17689 backedges. 6565 proven. 10100 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 13:00:45,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:00:45,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023845369] [2021-05-02 13:00:45,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023845369] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:00:45,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736525124] [2021-05-02 13:00:45,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:00:45,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2021-05-02 13:00:45,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:00:45,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 13:00:45,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:00:46,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:46,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:46,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:46,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:46,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:46,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:46,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:46,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:47,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:48,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:49,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:49,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:49,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:49,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:49,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:49,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:49,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:49,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:49,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:49,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:49,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:49,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:49,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:49,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:50,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:50,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:50,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:50,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:50,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:50,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:50,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:50,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:50,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:50,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:50,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:50,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:50,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:00:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 17689 backedges. 0 proven. 7589 refuted. 0 times theorem prover too weak. 10100 trivial. 0 not checked. [2021-05-02 13:00:50,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736525124] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:00:50,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:00:50,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 39] total 141 [2021-05-02 13:00:50,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197828901] [2021-05-02 13:00:50,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 141 states [2021-05-02 13:00:50,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:00:50,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2021-05-02 13:00:50,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5891, Invalid=13849, Unknown=0, NotChecked=0, Total=19740 [2021-05-02 13:00:50,885 INFO L87 Difference]: Start difference. First operand 278 states and 311 transitions. Second operand has 141 states, 140 states have (on average 2.0214285714285714) internal successors, (283), 139 states have internal predecessors, (283), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:01:12,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:01:12,859 INFO L93 Difference]: Finished difference Result 358 states and 427 transitions. [2021-05-02 13:01:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2021-05-02 13:01:12,860 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 140 states have (on average 2.0214285714285714) internal successors, (283), 139 states have internal predecessors, (283), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 277 [2021-05-02 13:01:12,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:01:12,861 INFO L225 Difference]: With dead ends: 358 [2021-05-02 13:01:12,861 INFO L226 Difference]: Without dead ends: 285 [2021-05-02 13:01:12,863 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13354 ImplicationChecksByTransitivity, 31691.0ms TimeCoverageRelationStatistics Valid=24537, Invalid=53025, Unknown=0, NotChecked=0, Total=77562 [2021-05-02 13:01:12,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-05-02 13:01:12,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 282. [2021-05-02 13:01:12,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 277 states have (on average 1.1263537906137184) internal successors, (312), 277 states have internal predecessors, (312), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:01:12,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 316 transitions. [2021-05-02 13:01:12,879 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 316 transitions. Word has length 277 [2021-05-02 13:01:12,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:01:12,879 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 316 transitions. [2021-05-02 13:01:12,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 141 states, 140 states have (on average 2.0214285714285714) internal successors, (283), 139 states have internal predecessors, (283), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:01:12,879 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 316 transitions. [2021-05-02 13:01:12,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-05-02 13:01:12,880 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:01:12,880 INFO L523 BasicCegarLoop]: trace histogram [135, 101, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:01:13,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:01:13,080 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:01:13,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:01:13,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1273884086, now seen corresponding path program 100 times [2021-05-02 13:01:13,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:01:13,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402694408] [2021-05-02 13:01:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:01:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:01:20,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:01:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:01:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 18225 backedges. 6834 proven. 10302 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2021-05-02 13:01:20,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:01:20,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402694408] [2021-05-02 13:01:20,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402694408] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:01:20,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8178115] [2021-05-02 13:01:20,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:01:20,756 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:01:20,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:01:20,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 13:01:20,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:01:20,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:20,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 18225 backedges. 6834 proven. 10302 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2021-05-02 13:01:21,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8178115] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:01:21,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:01:21,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 106 [2021-05-02 13:01:21,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358696760] [2021-05-02 13:01:21,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-02 13:01:21,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:01:21,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-02 13:01:21,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 13:01:21,873 INFO L87 Difference]: Start difference. First operand 282 states and 316 transitions. Second operand has 106 states, 106 states have (on average 2.047169811320755) internal successors, (217), 105 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:01:34,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:01:34,255 INFO L93 Difference]: Finished difference Result 356 states and 424 transitions. [2021-05-02 13:01:34,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 13:01:34,257 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.047169811320755) internal successors, (217), 105 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 281 [2021-05-02 13:01:34,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:01:34,257 INFO L225 Difference]: With dead ends: 356 [2021-05-02 13:01:34,258 INFO L226 Difference]: Without dead ends: 284 [2021-05-02 13:01:34,259 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 19093.0ms TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2021-05-02 13:01:34,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-05-02 13:01:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-05-02 13:01:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 279 states have (on average 1.125448028673835) internal successors, (314), 279 states have internal predecessors, (314), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:01:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 318 transitions. [2021-05-02 13:01:34,288 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 318 transitions. Word has length 281 [2021-05-02 13:01:34,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:01:34,288 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 318 transitions. [2021-05-02 13:01:34,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 106 states, 106 states have (on average 2.047169811320755) internal successors, (217), 105 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:01:34,289 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 318 transitions. [2021-05-02 13:01:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-05-02 13:01:34,290 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:01:34,290 INFO L523 BasicCegarLoop]: trace histogram [136, 102, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:01:34,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-05-02 13:01:34,505 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:01:34,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:01:34,505 INFO L82 PathProgramCache]: Analyzing trace with hash 78887655, now seen corresponding path program 101 times [2021-05-02 13:01:34,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:01:34,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710672358] [2021-05-02 13:01:34,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:01:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:01:41,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:01:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:01:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 18496 backedges. 6901 proven. 10506 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2021-05-02 13:01:41,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:01:41,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710672358] [2021-05-02 13:01:41,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710672358] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:01:41,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825177589] [2021-05-02 13:01:41,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:01:42,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 137 check-sat command(s) [2021-05-02 13:01:42,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:01:42,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 104 conjunts are in the unsatisfiable core [2021-05-02 13:01:42,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:01:42,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:42,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:01:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 18496 backedges. 6901 proven. 10506 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2021-05-02 13:01:43,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825177589] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:01:43,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:01:43,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105] total 107 [2021-05-02 13:01:43,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111504977] [2021-05-02 13:01:43,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-02 13:01:43,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:01:43,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-02 13:01:43,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 13:01:43,519 INFO L87 Difference]: Start difference. First operand 284 states and 318 transitions. Second operand has 107 states, 107 states have (on average 2.046728971962617) internal successors, (219), 106 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)