/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/loop-acceleration/functions_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 12:05:05,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 12:05:05,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 12:05:06,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 12:05:06,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 12:05:06,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 12:05:06,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 12:05:06,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 12:05:06,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 12:05:06,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 12:05:06,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 12:05:06,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 12:05:06,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 12:05:06,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 12:05:06,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 12:05:06,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 12:05:06,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 12:05:06,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 12:05:06,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 12:05:06,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 12:05:06,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 12:05:06,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 12:05:06,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 12:05:06,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 12:05:06,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 12:05:06,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 12:05:06,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 12:05:06,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 12:05:06,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 12:05:06,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 12:05:06,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 12:05:06,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 12:05:06,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 12:05:06,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 12:05:06,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 12:05:06,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 12:05:06,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 12:05:06,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 12:05:06,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 12:05:06,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 12:05:06,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 12:05:06,051 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 12:05:06,080 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 12:05:06,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 12:05:06,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 12:05:06,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 12:05:06,082 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 12:05:06,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 12:05:06,083 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 12:05:06,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 12:05:06,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 12:05:06,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 12:05:06,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 12:05:06,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 12:05:06,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 12:05:06,084 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 12:05:06,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 12:05:06,092 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 12:05:06,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 12:05:06,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 12:05:06,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 12:05:06,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 12:05:06,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:05:06,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 12:05:06,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 12:05:06,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 12:05:06,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 12:05:06,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 12:05:06,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 12:05:06,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 12:05:06,093 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 12:05:06,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 12:05:06,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 12:05:06,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 12:05:06,370 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 12:05:06,371 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 12:05:06,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/functions_1-1.c [2021-05-02 12:05:06,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6907828d2/1247dda5c0884e8bac82edbd5b770a71/FLAG1556743f2 [2021-05-02 12:05:06,767 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 12:05:06,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-1.c [2021-05-02 12:05:06,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6907828d2/1247dda5c0884e8bac82edbd5b770a71/FLAG1556743f2 [2021-05-02 12:05:07,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6907828d2/1247dda5c0884e8bac82edbd5b770a71 [2021-05-02 12:05:07,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 12:05:07,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 12:05:07,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 12:05:07,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 12:05:07,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 12:05:07,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:05:07" (1/1) ... [2021-05-02 12:05:07,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef73359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:05:07, skipping insertion in model container [2021-05-02 12:05:07,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:05:07" (1/1) ... [2021-05-02 12:05:07,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 12:05:07,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 12:05:07,361 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-1.c[325,338] [2021-05-02 12:05:07,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:05:07,373 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 12:05:07,382 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-1.c[325,338] [2021-05-02 12:05:07,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:05:07,398 INFO L208 MainTranslator]: Completed translation [2021-05-02 12:05:07,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:05:07 WrapperNode [2021-05-02 12:05:07,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 12:05:07,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 12:05:07,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 12:05:07,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 12:05:07,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:05:07" (1/1) ... [2021-05-02 12:05:07,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:05:07" (1/1) ... [2021-05-02 12:05:07,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:05:07" (1/1) ... [2021-05-02 12:05:07,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:05:07" (1/1) ... [2021-05-02 12:05:07,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:05:07" (1/1) ... [2021-05-02 12:05:07,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:05:07" (1/1) ... [2021-05-02 12:05:07,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:05:07" (1/1) ... [2021-05-02 12:05:07,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 12:05:07,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 12:05:07,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 12:05:07,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 12:05:07,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:05:07" (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 12:05:07,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 12:05:07,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 12:05:07,542 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 12:05:07,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 12:05:07,543 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-05-02 12:05:07,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 12:05:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 12:05:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 12:05:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 12:05:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 12:05:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 12:05:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-05-02 12:05:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 12:05:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 12:05:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 12:05:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 12:05:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 12:05:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 12:05:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 12:05:07,717 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 12:05:07,717 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 12:05:07,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:05:07 BoogieIcfgContainer [2021-05-02 12:05:07,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 12:05:07,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 12:05:07,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 12:05:07,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 12:05:07,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 12:05:07" (1/3) ... [2021-05-02 12:05:07,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3534ddbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:05:07, skipping insertion in model container [2021-05-02 12:05:07,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:05:07" (2/3) ... [2021-05-02 12:05:07,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3534ddbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:05:07, skipping insertion in model container [2021-05-02 12:05:07,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:05:07" (3/3) ... [2021-05-02 12:05:07,723 INFO L111 eAbstractionObserver]: Analyzing ICFG functions_1-1.c [2021-05-02 12:05:07,730 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 12:05:07,732 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 12:05:07,743 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 12:05:07,765 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 12:05:07,766 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 12:05:07,766 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 12:05:07,766 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 12:05:07,766 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 12:05:07,766 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 12:05:07,766 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 12:05:07,766 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 12:05:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 12:05:07,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 12:05:07,779 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:07,779 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:07,779 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:07,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:07,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1649640916, now seen corresponding path program 1 times [2021-05-02 12:05:07,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:07,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486478803] [2021-05-02 12:05:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:07,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:07,958 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 12:05:07,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:07,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486478803] [2021-05-02 12:05:07,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486478803] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:05:07,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:05:07,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 12:05:07,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249359161] [2021-05-02 12:05:07,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 12:05:07,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:07,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 12:05:07,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 12:05:07,971 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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 12:05:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:08,009 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-05-02 12:05:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 12:05:08,010 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 12:05:08,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:08,014 INFO L225 Difference]: With dead ends: 34 [2021-05-02 12:05:08,014 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 12:05:08,016 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 12:05:08,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 12:05:08,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 12:05:08,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 12:05:08,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-05-02 12:05:08,051 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2021-05-02 12:05:08,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:08,051 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-05-02 12:05:08,052 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 12:05:08,052 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-05-02 12:05:08,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 12:05:08,053 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:08,053 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:08,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 12:05:08,053 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:08,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:08,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1655182042, now seen corresponding path program 1 times [2021-05-02 12:05:08,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:08,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111180288] [2021-05-02 12:05:08,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:08,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:08,181 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 12:05:08,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:08,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111180288] [2021-05-02 12:05:08,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111180288] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:05:08,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:05:08,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 12:05:08,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676313442] [2021-05-02 12:05:08,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 12:05:08,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:08,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 12:05:08,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 12:05:08,186 INFO L87 Difference]: Start difference. First operand 17 states and 17 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 12:05:08,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:08,264 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-05-02 12:05:08,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 12:05:08,264 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 12:05:08,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:08,265 INFO L225 Difference]: With dead ends: 25 [2021-05-02 12:05:08,265 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 12:05:08,266 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 12:05:08,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 12:05:08,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-05-02 12:05:08,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 12:05:08,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-02 12:05:08,272 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2021-05-02 12:05:08,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:08,272 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-02 12:05:08,272 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 12:05:08,272 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-02 12:05:08,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 12:05:08,273 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:08,273 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:08,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 12:05:08,273 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:08,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:08,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1503524740, now seen corresponding path program 1 times [2021-05-02 12:05:08,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:08,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372041842] [2021-05-02 12:05:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:08,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:08,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:08,422 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 12:05:08,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:08,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372041842] [2021-05-02 12:05:08,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372041842] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:08,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655042008] [2021-05-02 12:05:08,423 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 12:05:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:08,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 12:05:08,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:08,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:08,553 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 12:05:08,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655042008] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:08,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:08,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 12:05:08,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583513499] [2021-05-02 12:05:08,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 12:05:08,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:08,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 12:05:08,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-02 12:05:08,556 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 12:05:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:08,719 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-05-02 12:05:08,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 12:05:08,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-05-02 12:05:08,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:08,722 INFO L225 Difference]: With dead ends: 28 [2021-05-02 12:05:08,722 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 12:05:08,723 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 143.4ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:05:08,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 12:05:08,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-05-02 12:05:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 12:05:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-05-02 12:05:08,734 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2021-05-02 12:05:08,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:08,734 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-05-02 12:05:08,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 12:05:08,735 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-05-02 12:05:08,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 12:05:08,736 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:08,736 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:08,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 12:05:08,954 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:08,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:08,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1270987934, now seen corresponding path program 2 times [2021-05-02 12:05:08,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:08,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296416055] [2021-05-02 12:05:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:09,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:09,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:09,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:09,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 12:05:09,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:09,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296416055] [2021-05-02 12:05:09,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296416055] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:09,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70832180] [2021-05-02 12:05:09,112 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 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 12:05:09,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:05:09,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:09,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 12:05:09,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:09,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:09,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:09,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:09,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:09,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 12:05:09,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70832180] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:09,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:09,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-02 12:05:09,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882237296] [2021-05-02 12:05:09,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 12:05:09,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:09,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 12:05:09,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-02 12:05:09,313 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 12:05:09,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:09,536 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-05-02 12:05:09,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 12:05:09,537 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2021-05-02 12:05:09,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:09,538 INFO L225 Difference]: With dead ends: 31 [2021-05-02 12:05:09,538 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 12:05:09,538 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 225.8ms TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:05:09,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 12:05:09,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-05-02 12:05:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 12:05:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-02 12:05:09,547 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 23 [2021-05-02 12:05:09,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:09,547 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-02 12:05:09,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 12:05:09,547 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-02 12:05:09,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 12:05:09,548 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:09,549 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:09,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:05:09,753 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:09,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:09,754 INFO L82 PathProgramCache]: Analyzing trace with hash -371085120, now seen corresponding path program 3 times [2021-05-02 12:05:09,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:09,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936791889] [2021-05-02 12:05:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:09,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:09,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:09,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:09,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:09,931 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 12:05:09,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:09,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936791889] [2021-05-02 12:05:09,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936791889] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:09,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816656017] [2021-05-02 12:05:09,932 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 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 12:05:10,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 12:05:10,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:10,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 12:05:10,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:10,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:10,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:10,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:10,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:10,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:10,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:10,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 12:05:10,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816656017] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:10,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:10,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2021-05-02 12:05:10,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098672843] [2021-05-02 12:05:10,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 12:05:10,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:10,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 12:05:10,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:05:10,193 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 12:05:10,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:10,500 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-05-02 12:05:10,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 12:05:10,501 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2021-05-02 12:05:10,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:10,501 INFO L225 Difference]: With dead ends: 34 [2021-05-02 12:05:10,501 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 12:05:10,502 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 347.3ms TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:05:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 12:05:10,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-05-02 12:05:10,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 7 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 12:05:10,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-05-02 12:05:10,513 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 29 [2021-05-02 12:05:10,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:10,514 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-05-02 12:05:10,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 12:05:10,514 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-05-02 12:05:10,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 12:05:10,515 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:10,515 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:10,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:05:10,721 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:10,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:10,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1928781922, now seen corresponding path program 4 times [2021-05-02 12:05:10,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:10,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820541854] [2021-05-02 12:05:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:10,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:10,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:10,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:10,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:10,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-05-02 12:05:10,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:10,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820541854] [2021-05-02 12:05:10,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820541854] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:10,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461851670] [2021-05-02 12:05:10,899 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 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 12:05:10,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:05:10,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:10,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 12:05:10,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:10,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:10,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:11,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:11,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:11,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:11,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:11,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:11,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:11,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:11,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:11,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:11,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-05-02 12:05:11,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461851670] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:11,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:11,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 16 [2021-05-02 12:05:11,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253003843] [2021-05-02 12:05:11,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 12:05:11,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:11,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 12:05:11,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:05:11,131 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 12:05:11,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:11,602 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-05-02 12:05:11,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 12:05:11,604 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 35 [2021-05-02 12:05:11,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:11,606 INFO L225 Difference]: With dead ends: 37 [2021-05-02 12:05:11,606 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 12:05:11,606 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 439.8ms TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2021-05-02 12:05:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 12:05:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-05-02 12:05:11,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 12:05:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-05-02 12:05:11,610 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 35 [2021-05-02 12:05:11,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:11,611 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-05-02 12:05:11,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 12:05:11,611 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-05-02 12:05:11,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 12:05:11,611 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:11,612 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:11,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:05:11,825 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:11,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:11,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1005752324, now seen corresponding path program 5 times [2021-05-02 12:05:11,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:11,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10435341] [2021-05-02 12:05:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:12,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:12,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:12,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:12,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:12,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-05-02 12:05:12,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:12,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10435341] [2021-05-02 12:05:12,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10435341] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:12,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037813118] [2021-05-02 12:05:12,098 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 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 12:05:12,178 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-02 12:05:12,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:12,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-02 12:05:12,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:12,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:12,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:12,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:12,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:12,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:12,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:12,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:12,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:12,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:12,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:12,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:12,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:12,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:12,519 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-05-02 12:05:12,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037813118] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:12,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:12,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 12:05:12,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165473967] [2021-05-02 12:05:12,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 12:05:12,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:12,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 12:05:12,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:05:12,522 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 12:05:13,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:13,121 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-05-02 12:05:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 12:05:13,122 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 41 [2021-05-02 12:05:13,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:13,122 INFO L225 Difference]: With dead ends: 40 [2021-05-02 12:05:13,122 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 12:05:13,123 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 602.1ms TimeCoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2021-05-02 12:05:13,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 12:05:13,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-05-02 12:05:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 12:05:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-05-02 12:05:13,127 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 41 [2021-05-02 12:05:13,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:13,127 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-05-02 12:05:13,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 12:05:13,128 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-05-02 12:05:13,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 12:05:13,128 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:13,128 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:13,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:05:13,344 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:13,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:13,344 INFO L82 PathProgramCache]: Analyzing trace with hash 119505370, now seen corresponding path program 6 times [2021-05-02 12:05:13,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:13,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204394796] [2021-05-02 12:05:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:13,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:13,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:13,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:13,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:13,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:13,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-02 12:05:13,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:13,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204394796] [2021-05-02 12:05:13,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204394796] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:13,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594260212] [2021-05-02 12:05:13,615 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 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 12:05:13,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 12:05:13,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:13,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 12:05:13,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:13,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-02 12:05:13,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594260212] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:13,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:13,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-02 12:05:13,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825064208] [2021-05-02 12:05:13,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 12:05:13,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:13,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 12:05:13,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-05-02 12:05:13,941 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 11 states have internal predecessors, (24), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 12:05:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:14,522 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-05-02 12:05:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 12:05:14,523 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 11 states have internal predecessors, (24), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 47 [2021-05-02 12:05:14,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:14,523 INFO L225 Difference]: With dead ends: 43 [2021-05-02 12:05:14,523 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 12:05:14,524 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 619.4ms TimeCoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2021-05-02 12:05:14,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 12:05:14,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-05-02 12:05:14,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 10 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 12:05:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2021-05-02 12:05:14,528 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 47 [2021-05-02 12:05:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:14,529 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2021-05-02 12:05:14,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 11 states have internal predecessors, (24), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 12:05:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2021-05-02 12:05:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 12:05:14,529 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:14,529 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:14,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:05:14,733 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:14,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:14,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1581790520, now seen corresponding path program 7 times [2021-05-02 12:05:14,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:14,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204070908] [2021-05-02 12:05:14,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:15,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:15,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:15,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:15,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:15,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:15,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:15,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:15,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:05:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-05-02 12:05:15,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:15,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204070908] [2021-05-02 12:05:15,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204070908] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:15,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701384059] [2021-05-02 12:05:15,165 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 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 12:05:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:15,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 12:05:15,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:15,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-05-02 12:05:15,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701384059] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:15,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:15,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20 [2021-05-02 12:05:15,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243490818] [2021-05-02 12:05:15,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 12:05:15,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:15,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 12:05:15,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:05:15,587 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 12:05:16,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:16,377 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2021-05-02 12:05:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 12:05:16,378 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 53 [2021-05-02 12:05:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:16,379 INFO L225 Difference]: With dead ends: 46 [2021-05-02 12:05:16,379 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 12:05:16,380 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 849.8ms TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 12:05:16,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 12:05:16,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-05-02 12:05:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 11 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 12:05:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-05-02 12:05:16,396 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 53 [2021-05-02 12:05:16,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:16,398 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-05-02 12:05:16,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 12:05:16,398 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-05-02 12:05:16,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 12:05:16,399 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:16,399 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:16,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 12:05:16,615 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:16,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:16,616 INFO L82 PathProgramCache]: Analyzing trace with hash 526936598, now seen corresponding path program 8 times [2021-05-02 12:05:16,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:16,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891789175] [2021-05-02 12:05:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:16,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:16,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:16,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:16,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:16,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:17,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:17,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:17,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:05:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:17,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:05:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-05-02 12:05:17,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:17,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891789175] [2021-05-02 12:05:17,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891789175] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:17,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000187377] [2021-05-02 12:05:17,038 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 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 12:05:17,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:05:17,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:17,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-02 12:05:17,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:17,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-05-02 12:05:17,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000187377] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:17,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:17,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-02 12:05:17,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977560436] [2021-05-02 12:05:17,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 12:05:17,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:17,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 12:05:17,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2021-05-02 12:05:17,591 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 12:05:18,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:18,466 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2021-05-02 12:05:18,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 12:05:18,467 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 59 [2021-05-02 12:05:18,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:18,469 INFO L225 Difference]: With dead ends: 49 [2021-05-02 12:05:18,469 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 12:05:18,485 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 68 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1032.4ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 12:05:18,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 12:05:18,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2021-05-02 12:05:18,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:05:18,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2021-05-02 12:05:18,507 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 59 [2021-05-02 12:05:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:18,508 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2021-05-02 12:05:18,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 12:05:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2021-05-02 12:05:18,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 12:05:18,513 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:18,513 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:18,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-05-02 12:05:18,728 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:18,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:18,729 INFO L82 PathProgramCache]: Analyzing trace with hash 741933172, now seen corresponding path program 9 times [2021-05-02 12:05:18,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:18,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943635166] [2021-05-02 12:05:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:19,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:19,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:19,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:19,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:19,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:19,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:19,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:05:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:19,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:05:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:19,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:05:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-05-02 12:05:19,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:19,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943635166] [2021-05-02 12:05:19,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943635166] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:19,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297239807] [2021-05-02 12:05:19,070 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 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 12:05:19,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 12:05:19,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:19,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 12:05:19,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:19,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-05-02 12:05:19,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297239807] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:19,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:19,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 26 [2021-05-02 12:05:19,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797297795] [2021-05-02 12:05:19,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 12:05:19,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:19,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 12:05:19,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2021-05-02 12:05:19,720 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:05:20,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:20,763 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2021-05-02 12:05:20,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 12:05:20,763 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 65 [2021-05-02 12:05:20,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:20,764 INFO L225 Difference]: With dead ends: 52 [2021-05-02 12:05:20,764 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 12:05:20,765 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 73 SyntacticMatches, 9 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1036.0ms TimeCoverageRelationStatistics Valid=176, Invalid=1894, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 12:05:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 12:05:20,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-05-02 12:05:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 13 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 12:05:20,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-05-02 12:05:20,769 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 65 [2021-05-02 12:05:20,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:20,770 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-05-02 12:05:20,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:05:20,770 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-05-02 12:05:20,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 12:05:20,770 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:20,770 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:20,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:05:20,974 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:20,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:20,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1337272238, now seen corresponding path program 10 times [2021-05-02 12:05:20,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:20,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094515956] [2021-05-02 12:05:20,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:21,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:21,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:21,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:21,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:21,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:21,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:21,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:21,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:05:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:21,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:05:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:21,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:05:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:21,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:05:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-05-02 12:05:21,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:21,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094515956] [2021-05-02 12:05:21,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094515956] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:21,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825199540] [2021-05-02 12:05:21,410 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 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 12:05:21,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:05:21,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:21,508 WARN L261 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-02 12:05:21,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:21,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-05-02 12:05:21,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825199540] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:21,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:21,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 28 [2021-05-02 12:05:21,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167202419] [2021-05-02 12:05:21,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 12:05:21,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:21,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 12:05:21,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2021-05-02 12:05:21,937 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 12:05:23,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:23,124 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2021-05-02 12:05:23,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 12:05:23,124 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 71 [2021-05-02 12:05:23,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:23,125 INFO L225 Difference]: With dead ends: 55 [2021-05-02 12:05:23,125 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 12:05:23,125 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 80 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1246.3ms TimeCoverageRelationStatistics Valid=193, Invalid=2257, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 12:05:23,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 12:05:23,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-05-02 12:05:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 14 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 12:05:23,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2021-05-02 12:05:23,130 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 71 [2021-05-02 12:05:23,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:23,130 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2021-05-02 12:05:23,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 12:05:23,131 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2021-05-02 12:05:23,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 12:05:23,131 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:23,131 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:23,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:05:23,341 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:23,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1594282416, now seen corresponding path program 11 times [2021-05-02 12:05:23,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:23,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805549386] [2021-05-02 12:05:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:23,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:23,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:23,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:23,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:23,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:23,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:23,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:05:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:23,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:05:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:23,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:05:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:23,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:05:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:23,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:05:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-05-02 12:05:23,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:23,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805549386] [2021-05-02 12:05:23,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805549386] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:23,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584848796] [2021-05-02 12:05:23,745 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 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 12:05:24,130 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-02 12:05:24,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:24,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 113 conjunts are in the unsatisfiable core [2021-05-02 12:05:24,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:24,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:24,568 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-05-02 12:05:24,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584848796] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:24,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:24,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-02 12:05:24,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753559537] [2021-05-02 12:05:24,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 12:05:24,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:24,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 12:05:24,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2021-05-02 12:05:24,570 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 12:05:25,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:25,820 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2021-05-02 12:05:25,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 12:05:25,820 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 77 [2021-05-02 12:05:25,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:25,821 INFO L225 Difference]: With dead ends: 58 [2021-05-02 12:05:25,821 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 12:05:25,822 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 89 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1286.7ms TimeCoverageRelationStatistics Valid=206, Invalid=2446, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 12:05:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 12:05:25,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2021-05-02 12:05:25,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 15 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 12:05:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2021-05-02 12:05:25,836 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 77 [2021-05-02 12:05:25,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:25,837 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2021-05-02 12:05:25,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 12:05:25,837 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-05-02 12:05:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 12:05:25,838 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:25,838 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:26,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 12:05:26,044 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:26,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:26,045 INFO L82 PathProgramCache]: Analyzing trace with hash 833473678, now seen corresponding path program 12 times [2021-05-02 12:05:26,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:26,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653830599] [2021-05-02 12:05:26,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:26,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:26,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:26,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:26,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:26,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:26,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:26,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:26,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:05:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:26,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:05:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:26,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:05:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:26,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:05:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:05:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:26,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:05:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-05-02 12:05:26,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:26,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653830599] [2021-05-02 12:05:26,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653830599] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:26,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152386856] [2021-05-02 12:05:26,543 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 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 12:05:26,758 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-02 12:05:26,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:26,761 WARN L261 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 128 conjunts are in the unsatisfiable core [2021-05-02 12:05:26,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:26,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:26,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-05-02 12:05:27,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152386856] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:27,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:27,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30] total 32 [2021-05-02 12:05:27,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381690097] [2021-05-02 12:05:27,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 12:05:27,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:27,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 12:05:27,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2021-05-02 12:05:27,271 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 12:05:28,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:28,667 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2021-05-02 12:05:28,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 12:05:28,667 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 83 [2021-05-02 12:05:28,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:28,668 INFO L225 Difference]: With dead ends: 61 [2021-05-02 12:05:28,668 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 12:05:28,668 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 94 SyntacticMatches, 12 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1524.9ms TimeCoverageRelationStatistics Valid=227, Invalid=3079, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 12:05:28,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 12:05:28,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2021-05-02 12:05:28,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 16 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 12:05:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2021-05-02 12:05:28,673 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 83 [2021-05-02 12:05:28,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:28,674 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2021-05-02 12:05:28,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 12:05:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2021-05-02 12:05:28,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 12:05:28,674 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:28,674 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:28,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 12:05:28,877 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:28,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:28,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1520916244, now seen corresponding path program 13 times [2021-05-02 12:05:28,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:28,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721473014] [2021-05-02 12:05:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:05:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:05:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:05:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:05:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:05:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:05:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:05:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-05-02 12:05:29,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:29,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721473014] [2021-05-02 12:05:29,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721473014] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:29,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871790621] [2021-05-02 12:05:29,394 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 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 12:05:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:29,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 133 conjunts are in the unsatisfiable core [2021-05-02 12:05:29,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:29,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-05-02 12:05:29,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871790621] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:29,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:29,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 32 [2021-05-02 12:05:29,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882382334] [2021-05-02 12:05:29,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 12:05:29,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:29,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 12:05:29,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2021-05-02 12:05:29,932 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 12:05:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:31,465 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2021-05-02 12:05:31,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 12:05:31,465 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 89 [2021-05-02 12:05:31,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:31,466 INFO L225 Difference]: With dead ends: 64 [2021-05-02 12:05:31,466 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 12:05:31,467 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 103 SyntacticMatches, 13 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1555.3ms TimeCoverageRelationStatistics Valid=240, Invalid=3300, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 12:05:31,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 12:05:31,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2021-05-02 12:05:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 17 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 12:05:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2021-05-02 12:05:31,472 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 89 [2021-05-02 12:05:31,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:31,472 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2021-05-02 12:05:31,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 12:05:31,473 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2021-05-02 12:05:31,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 12:05:31,473 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:31,473 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:31,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:05:31,677 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:31,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:31,677 INFO L82 PathProgramCache]: Analyzing trace with hash 2029536970, now seen corresponding path program 14 times [2021-05-02 12:05:31,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:31,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981006305] [2021-05-02 12:05:31,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:05:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:05:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:05:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:05:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:05:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:05:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:05:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:05:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-05-02 12:05:32,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:32,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981006305] [2021-05-02 12:05:32,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981006305] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:32,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39484667] [2021-05-02 12:05:32,243 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 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 12:05:32,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:05:32,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:32,313 WARN L261 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 143 conjunts are in the unsatisfiable core [2021-05-02 12:05:32,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:32,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-05-02 12:05:32,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39484667] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:32,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:32,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 12:05:32,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087469177] [2021-05-02 12:05:32,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 12:05:32,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:32,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 12:05:32,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 12:05:32,839 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 19 states have internal predecessors, (40), 16 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 12:05:34,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:34,612 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2021-05-02 12:05:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 12:05:34,613 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 19 states have internal predecessors, (40), 16 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 95 [2021-05-02 12:05:34,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:34,613 INFO L225 Difference]: With dead ends: 67 [2021-05-02 12:05:34,613 INFO L226 Difference]: Without dead ends: 62 [2021-05-02 12:05:34,614 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 110 SyntacticMatches, 14 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1817.8ms TimeCoverageRelationStatistics Valid=257, Invalid=3775, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 12:05:34,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-02 12:05:34,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-05-02 12:05:34,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 18 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 12:05:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2021-05-02 12:05:34,620 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 95 [2021-05-02 12:05:34,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:34,620 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2021-05-02 12:05:34,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 19 states have internal predecessors, (40), 16 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 12:05:34,620 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2021-05-02 12:05:34,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 12:05:34,621 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:34,621 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:34,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:05:34,825 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:34,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:34,825 INFO L82 PathProgramCache]: Analyzing trace with hash -346716632, now seen corresponding path program 15 times [2021-05-02 12:05:34,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:34,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458736736] [2021-05-02 12:05:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:05:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:05:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:05:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:05:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:05:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:05:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:05:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:05:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:05:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-05-02 12:05:35,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:35,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458736736] [2021-05-02 12:05:35,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458736736] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:35,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265433279] [2021-05-02 12:05:35,444 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 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 12:05:35,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-02 12:05:35,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:35,794 WARN L261 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 159 conjunts are in the unsatisfiable core [2021-05-02 12:05:35,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:35,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:35,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:35,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:35,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:35,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:35,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:35,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:35,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:35,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:35,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:35,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-05-02 12:05:36,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265433279] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:36,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:36,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-02 12:05:36,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607679726] [2021-05-02 12:05:36,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 12:05:36,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:36,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 12:05:36,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 12:05:36,436 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 20 states have internal predecessors, (42), 17 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 12:05:38,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:38,351 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2021-05-02 12:05:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 12:05:38,352 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 20 states have internal predecessors, (42), 17 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 101 [2021-05-02 12:05:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:38,352 INFO L225 Difference]: With dead ends: 70 [2021-05-02 12:05:38,352 INFO L226 Difference]: Without dead ends: 65 [2021-05-02 12:05:38,353 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 116 SyntacticMatches, 16 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 2053.4ms TimeCoverageRelationStatistics Valid=274, Invalid=4282, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 12:05:38,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-02 12:05:38,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2021-05-02 12:05:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 19 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 12:05:38,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2021-05-02 12:05:38,359 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 101 [2021-05-02 12:05:38,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:38,359 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2021-05-02 12:05:38,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 20 states have internal predecessors, (42), 17 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 12:05:38,360 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2021-05-02 12:05:38,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 12:05:38,360 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:38,360 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:38,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 12:05:38,563 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:38,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:38,563 INFO L82 PathProgramCache]: Analyzing trace with hash 2031175430, now seen corresponding path program 16 times [2021-05-02 12:05:38,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:38,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231049932] [2021-05-02 12:05:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:05:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:05:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:05:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:05:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:05:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:05:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:05:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:05:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:05:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:05:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-05-02 12:05:39,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:39,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231049932] [2021-05-02 12:05:39,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231049932] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:39,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80328238] [2021-05-02 12:05:39,239 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 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 12:05:39,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:05:39,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:39,292 WARN L261 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 168 conjunts are in the unsatisfiable core [2021-05-02 12:05:39,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:39,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:39,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:40,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:40,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:40,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-05-02 12:05:40,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80328238] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:40,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:40,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 38] total 40 [2021-05-02 12:05:40,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050393966] [2021-05-02 12:05:40,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 12:05:40,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:40,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 12:05:40,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1466, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 12:05:40,091 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 12:05:42,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:42,121 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2021-05-02 12:05:42,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 12:05:42,121 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 107 [2021-05-02 12:05:42,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:42,122 INFO L225 Difference]: With dead ends: 73 [2021-05-02 12:05:42,122 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 12:05:42,123 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 122 SyntacticMatches, 16 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 2292.1ms TimeCoverageRelationStatistics Valid=295, Invalid=5107, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 12:05:42,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 12:05:42,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-05-02 12:05:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 20 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 12:05:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2021-05-02 12:05:42,129 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 107 [2021-05-02 12:05:42,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:42,129 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-05-02 12:05:42,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 12:05:42,129 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2021-05-02 12:05:42,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 12:05:42,130 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:42,130 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:42,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:05:42,331 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:42,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:42,331 INFO L82 PathProgramCache]: Analyzing trace with hash 446982500, now seen corresponding path program 17 times [2021-05-02 12:05:42,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:42,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65086686] [2021-05-02 12:05:42,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:05:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:05:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:05:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:05:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:05:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:05:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:05:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:05:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:05:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:05:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:05:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-05-02 12:05:43,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:43,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65086686] [2021-05-02 12:05:43,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65086686] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:43,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614307907] [2021-05-02 12:05:43,092 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 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 12:05:44,888 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 12:05:44,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:44,893 WARN L261 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 184 conjunts are in the unsatisfiable core [2021-05-02 12:05:44,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:44,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:44,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:44,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-05-02 12:05:45,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614307907] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:45,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:45,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 12:05:45,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994594790] [2021-05-02 12:05:45,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 12:05:45,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:45,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 12:05:45,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1465, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 12:05:45,878 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 12:05:48,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:48,043 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2021-05-02 12:05:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 12:05:48,044 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 113 [2021-05-02 12:05:48,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:48,045 INFO L225 Difference]: With dead ends: 76 [2021-05-02 12:05:48,045 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 12:05:48,046 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 120 SyntacticMatches, 28 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2572.1ms TimeCoverageRelationStatistics Valid=308, Invalid=5392, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 12:05:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 12:05:48,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2021-05-02 12:05:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 21 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 12:05:48,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2021-05-02 12:05:48,052 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 113 [2021-05-02 12:05:48,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:48,052 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2021-05-02 12:05:48,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 12:05:48,052 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2021-05-02 12:05:48,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 12:05:48,053 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:48,053 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:48,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 12:05:48,257 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:48,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:48,257 INFO L82 PathProgramCache]: Analyzing trace with hash 39832898, now seen corresponding path program 18 times [2021-05-02 12:05:48,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:48,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212870864] [2021-05-02 12:05:48,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:05:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:05:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:05:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:05:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:05:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:05:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:05:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:05:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:05:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:05:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:05:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:05:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-05-02 12:05:49,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:49,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212870864] [2021-05-02 12:05:49,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212870864] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:49,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052337740] [2021-05-02 12:05:49,174 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 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 12:05:50,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 12:05:50,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:50,163 WARN L261 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 186 conjunts are in the unsatisfiable core [2021-05-02 12:05:50,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:50,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:50,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:51,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:51,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:51,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:51,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-05-02 12:05:51,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052337740] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:51,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:51,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-02 12:05:51,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558918242] [2021-05-02 12:05:51,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 12:05:51,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:51,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 12:05:51,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1622, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 12:05:51,106 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 42 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 23 states have internal predecessors, (48), 20 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 12:05:53,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:53,562 INFO L93 Difference]: Finished difference Result 79 states and 98 transitions. [2021-05-02 12:05:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 12:05:53,562 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 23 states have internal predecessors, (48), 20 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 119 [2021-05-02 12:05:53,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:53,563 INFO L225 Difference]: With dead ends: 79 [2021-05-02 12:05:53,563 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 12:05:53,565 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 135 SyntacticMatches, 21 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 2849.5ms TimeCoverageRelationStatistics Valid=325, Invalid=5995, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 12:05:53,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 12:05:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2021-05-02 12:05:53,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 22 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 12:05:53,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2021-05-02 12:05:53,571 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 119 [2021-05-02 12:05:53,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:53,571 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2021-05-02 12:05:53,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 23 states have internal predecessors, (48), 20 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 12:05:53,572 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2021-05-02 12:05:53,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 12:05:53,572 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:53,572 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:53,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 12:05:53,776 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:53,776 INFO L82 PathProgramCache]: Analyzing trace with hash -630435168, now seen corresponding path program 19 times [2021-05-02 12:05:53,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:53,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323143169] [2021-05-02 12:05:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:05:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:05:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:05:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:05:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:05:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:05:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:05:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:05:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:05:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:05:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:05:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:05:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:05:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-05-02 12:05:54,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:54,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323143169] [2021-05-02 12:05:54,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323143169] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:54,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194667605] [2021-05-02 12:05:54,683 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 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 12:05:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:54,770 WARN L261 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 193 conjunts are in the unsatisfiable core [2021-05-02 12:05:54,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:54,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:54,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:54,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:54,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:54,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:54,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:54,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:54,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:54,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:54,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:54,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:54,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:54,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-05-02 12:05:55,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194667605] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:55,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:05:55,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 44 [2021-05-02 12:05:55,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861535304] [2021-05-02 12:05:55,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 12:05:55,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:05:55,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 12:05:55,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1787, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 12:05:55,704 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 44 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 24 states have internal predecessors, (50), 21 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 12:05:58,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:05:58,187 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2021-05-02 12:05:58,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 12:05:58,187 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 24 states have internal predecessors, (50), 21 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 125 [2021-05-02 12:05:58,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:05:58,188 INFO L225 Difference]: With dead ends: 82 [2021-05-02 12:05:58,188 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 12:05:58,189 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 145 SyntacticMatches, 19 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 2897.8ms TimeCoverageRelationStatistics Valid=342, Invalid=6630, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 12:05:58,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 12:05:58,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2021-05-02 12:05:58,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 23 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 12:05:58,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2021-05-02 12:05:58,196 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 125 [2021-05-02 12:05:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:05:58,196 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2021-05-02 12:05:58,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 24 states have internal predecessors, (50), 21 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 12:05:58,196 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2021-05-02 12:05:58,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 12:05:58,197 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:05:58,197 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:05:58,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-02 12:05:58,406 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:05:58,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:05:58,406 INFO L82 PathProgramCache]: Analyzing trace with hash -2100635266, now seen corresponding path program 20 times [2021-05-02 12:05:58,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:05:58,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767060387] [2021-05-02 12:05:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:05:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:05:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:05:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:05:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:05:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:05:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:05:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:05:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:05:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:05:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:05:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:05:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:05:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:05:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:05:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:05:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:05:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:05:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:05:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:05:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:05:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:05:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:05:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2021-05-02 12:05:59,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:05:59,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767060387] [2021-05-02 12:05:59,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767060387] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:05:59,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320213029] [2021-05-02 12:05:59,396 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 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 12:05:59,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:05:59,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:05:59,502 WARN L261 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 203 conjunts are in the unsatisfiable core [2021-05-02 12:05:59,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:05:59,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:05:59,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2021-05-02 12:06:00,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320213029] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:00,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:06:00,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-02 12:06:00,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721494569] [2021-05-02 12:06:00,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 12:06:00,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:06:00,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 12:06:00,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1960, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 12:06:00,511 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 25 states have internal predecessors, (52), 22 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 12:06:03,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:06:03,362 INFO L93 Difference]: Finished difference Result 85 states and 106 transitions. [2021-05-02 12:06:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 12:06:03,364 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 25 states have internal predecessors, (52), 22 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 131 [2021-05-02 12:06:03,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:06:03,364 INFO L225 Difference]: With dead ends: 85 [2021-05-02 12:06:03,364 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 12:06:03,365 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 152 SyntacticMatches, 20 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 3226.6ms TimeCoverageRelationStatistics Valid=359, Invalid=7297, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 12:06:03,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 12:06:03,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-05-02 12:06:03,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 24 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-02 12:06:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2021-05-02 12:06:03,373 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 131 [2021-05-02 12:06:03,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:06:03,373 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2021-05-02 12:06:03,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 25 states have internal predecessors, (52), 22 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 12:06:03,373 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2021-05-02 12:06:03,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 12:06:03,374 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:06:03,374 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:06:03,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 12:06:03,584 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:06:03,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:06:03,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1330921948, now seen corresponding path program 21 times [2021-05-02 12:06:03,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:06:03,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569945580] [2021-05-02 12:06:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:06:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:06:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:06:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:06:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:06:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:06:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:06:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:06:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:06:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:06:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:06:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:06:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:06:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:06:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:06:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:06:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:06:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:06:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:06:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:06:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:06:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:06:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:06:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-05-02 12:06:04,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:06:04,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569945580] [2021-05-02 12:06:04,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569945580] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:04,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203498285] [2021-05-02 12:06:04,644 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 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 12:06:05,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 12:06:05,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:06:05,911 WARN L261 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 214 conjunts are in the unsatisfiable core [2021-05-02 12:06:05,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:06:05,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:05,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:06,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:07,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:07,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-05-02 12:06:07,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203498285] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:07,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:06:07,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-02 12:06:07,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304328154] [2021-05-02 12:06:07,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 12:06:07,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:06:07,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 12:06:07,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2141, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 12:06:07,058 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand has 48 states, 48 states have (on average 1.125) internal successors, (54), 26 states have internal predecessors, (54), 23 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-02 12:06:09,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:06:09,990 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2021-05-02 12:06:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 12:06:09,991 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.125) internal successors, (54), 26 states have internal predecessors, (54), 23 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 137 [2021-05-02 12:06:09,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:06:09,991 INFO L225 Difference]: With dead ends: 88 [2021-05-02 12:06:09,991 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 12:06:09,992 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 158 SyntacticMatches, 22 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 3465.6ms TimeCoverageRelationStatistics Valid=376, Invalid=7996, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 12:06:09,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 12:06:09,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-05-02 12:06:10,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 25 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 12:06:10,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2021-05-02 12:06:10,003 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 137 [2021-05-02 12:06:10,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:06:10,004 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2021-05-02 12:06:10,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 1.125) internal successors, (54), 26 states have internal predecessors, (54), 23 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-02 12:06:10,004 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2021-05-02 12:06:10,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 12:06:10,005 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:06:10,005 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:06:10,208 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 12:06:10,209 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:06:10,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:06:10,209 INFO L82 PathProgramCache]: Analyzing trace with hash -977704006, now seen corresponding path program 22 times [2021-05-02 12:06:10,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:06:10,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116571147] [2021-05-02 12:06:10,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:06:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:06:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:06:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:06:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:06:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:06:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:06:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:06:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:06:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:06:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:06:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:06:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:06:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:06:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:06:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:06:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:06:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:06:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:06:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:06:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:06:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:06:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:06:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:06:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2021-05-02 12:06:11,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:06:11,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116571147] [2021-05-02 12:06:11,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116571147] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:11,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925344507] [2021-05-02 12:06:11,370 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 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 12:06:11,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:06:11,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:06:11,434 WARN L261 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 228 conjunts are in the unsatisfiable core [2021-05-02 12:06:11,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:06:11,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:11,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2021-05-02 12:06:12,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925344507] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:12,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:06:12,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 50] total 52 [2021-05-02 12:06:12,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323808276] [2021-05-02 12:06:12,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 12:06:12,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:06:12,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 12:06:12,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=2528, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 12:06:12,672 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 12:06:15,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:06:15,909 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2021-05-02 12:06:15,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 12:06:15,909 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 143 [2021-05-02 12:06:15,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:06:15,911 INFO L225 Difference]: With dead ends: 91 [2021-05-02 12:06:15,911 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 12:06:15,911 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 164 SyntacticMatches, 22 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 3812.9ms TimeCoverageRelationStatistics Valid=397, Invalid=9109, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 12:06:15,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 12:06:15,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2021-05-02 12:06:15,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 26 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 12:06:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2021-05-02 12:06:15,919 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 143 [2021-05-02 12:06:15,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:06:15,919 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2021-05-02 12:06:15,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 12:06:15,920 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2021-05-02 12:06:15,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 12:06:15,920 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:06:15,920 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:06:16,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:06:16,122 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:06:16,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:06:16,122 INFO L82 PathProgramCache]: Analyzing trace with hash -612157672, now seen corresponding path program 23 times [2021-05-02 12:06:16,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:06:16,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220409029] [2021-05-02 12:06:16,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:06:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:06:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:06:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:06:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:06:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:06:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:06:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:06:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:06:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:06:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:06:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:06:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:06:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:06:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:06:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:06:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:06:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:06:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:06:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:06:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:06:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:06:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:06:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:06:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:06:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-05-02 12:06:17,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:06:17,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220409029] [2021-05-02 12:06:17,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220409029] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:17,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137735385] [2021-05-02 12:06:17,362 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 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 12:06:21,928 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-02 12:06:21,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:06:21,933 WARN L261 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 249 conjunts are in the unsatisfiable core [2021-05-02 12:06:21,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:06:22,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:22,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-05-02 12:06:23,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137735385] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:23,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:06:23,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 12:06:23,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409455916] [2021-05-02 12:06:23,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 12:06:23,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:06:23,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 12:06:23,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 12:06:23,582 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 12:06:27,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:06:27,111 INFO L93 Difference]: Finished difference Result 94 states and 118 transitions. [2021-05-02 12:06:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 12:06:27,112 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 149 [2021-05-02 12:06:27,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:06:27,113 INFO L225 Difference]: With dead ends: 94 [2021-05-02 12:06:27,113 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 12:06:27,119 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 157 SyntacticMatches, 39 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 4408.1ms TimeCoverageRelationStatistics Valid=410, Invalid=9490, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 12:06:27,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 12:06:27,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2021-05-02 12:06:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 27 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 12:06:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 110 transitions. [2021-05-02 12:06:27,132 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 110 transitions. Word has length 149 [2021-05-02 12:06:27,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:06:27,132 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 110 transitions. [2021-05-02 12:06:27,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 12:06:27,133 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 110 transitions. [2021-05-02 12:06:27,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 12:06:27,134 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:06:27,134 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:06:27,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-02 12:06:27,337 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:06:27,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:06:27,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1273854986, now seen corresponding path program 24 times [2021-05-02 12:06:27,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:06:27,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529725806] [2021-05-02 12:06:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:06:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:06:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:06:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:06:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:06:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:06:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:06:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:06:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:06:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:06:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:06:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:06:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:06:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:06:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:06:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:06:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:06:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:06:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:06:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:06:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:06:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:06:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:06:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:06:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:06:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:06:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-05-02 12:06:28,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:06:28,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529725806] [2021-05-02 12:06:28,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529725806] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:28,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991044180] [2021-05-02 12:06:28,636 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 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 12:06:29,990 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-02 12:06:29,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:06:29,995 WARN L261 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 249 conjunts are in the unsatisfiable core [2021-05-02 12:06:29,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:06:30,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:30,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-05-02 12:06:31,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991044180] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:31,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:06:31,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-02 12:06:31,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290625635] [2021-05-02 12:06:31,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 12:06:31,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:06:31,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 12:06:31,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2732, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 12:06:31,343 INFO L87 Difference]: Start difference. First operand 87 states and 110 transitions. Second operand has 54 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 29 states have internal predecessors, (60), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 12:06:35,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:06:35,127 INFO L93 Difference]: Finished difference Result 97 states and 122 transitions. [2021-05-02 12:06:35,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 12:06:35,128 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 29 states have internal predecessors, (60), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 155 [2021-05-02 12:06:35,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:06:35,128 INFO L225 Difference]: With dead ends: 97 [2021-05-02 12:06:35,128 INFO L226 Difference]: Without dead ends: 92 [2021-05-02 12:06:35,129 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 179 SyntacticMatches, 25 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 4320.8ms TimeCoverageRelationStatistics Valid=427, Invalid=10285, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 12:06:35,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-02 12:06:35,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2021-05-02 12:06:35,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 28 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 12:06:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 114 transitions. [2021-05-02 12:06:35,138 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 114 transitions. Word has length 155 [2021-05-02 12:06:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:06:35,139 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 114 transitions. [2021-05-02 12:06:35,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 29 states have internal predecessors, (60), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 12:06:35,139 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 114 transitions. [2021-05-02 12:06:35,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 12:06:35,139 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:06:35,139 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:06:35,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:06:35,342 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:06:35,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:06:35,342 INFO L82 PathProgramCache]: Analyzing trace with hash -559926700, now seen corresponding path program 25 times [2021-05-02 12:06:35,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:06:35,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507945207] [2021-05-02 12:06:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:06:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:06:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:06:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:06:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:06:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:06:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:06:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:06:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:06:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:06:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:06:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:06:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:06:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:06:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:06:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:06:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:06:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:06:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:06:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:06:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:06:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:06:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:06:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:06:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:06:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:06:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:06:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 12:06:36,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:06:36,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507945207] [2021-05-02 12:06:36,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507945207] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:36,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705563679] [2021-05-02 12:06:36,788 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 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 12:06:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:36,883 WARN L261 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 253 conjunts are in the unsatisfiable core [2021-05-02 12:06:36,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:06:36,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:36,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:37,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:38,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 12:06:38,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705563679] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:38,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:06:38,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 56 [2021-05-02 12:06:38,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884975216] [2021-05-02 12:06:38,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 12:06:38,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:06:38,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 12:06:38,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2945, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 12:06:38,363 INFO L87 Difference]: Start difference. First operand 90 states and 114 transitions. Second operand has 56 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 30 states have internal predecessors, (62), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 12:06:42,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:06:42,391 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2021-05-02 12:06:42,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 12:06:42,392 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 30 states have internal predecessors, (62), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 161 [2021-05-02 12:06:42,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:06:42,392 INFO L225 Difference]: With dead ends: 100 [2021-05-02 12:06:42,393 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 12:06:42,393 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 187 SyntacticMatches, 25 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 4634.6ms TimeCoverageRelationStatistics Valid=444, Invalid=11112, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 12:06:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 12:06:42,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2021-05-02 12:06:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 29 states have call successors, (29), 4 states have call predecessors, (29), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-02 12:06:42,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2021-05-02 12:06:42,403 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 161 [2021-05-02 12:06:42,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:06:42,403 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2021-05-02 12:06:42,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 30 states have internal predecessors, (62), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 12:06:42,403 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2021-05-02 12:06:42,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 12:06:42,404 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:06:42,404 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:06:42,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 12:06:42,617 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:06:42,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:06:42,617 INFO L82 PathProgramCache]: Analyzing trace with hash 339550770, now seen corresponding path program 26 times [2021-05-02 12:06:42,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:06:42,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113227907] [2021-05-02 12:06:42,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:06:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:06:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:06:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:06:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:06:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:06:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:06:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:06:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:06:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:06:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:06:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:06:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:06:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:06:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:06:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:06:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:06:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:06:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:06:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:06:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:06:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:06:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:06:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:06:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:06:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:06:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:06:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:06:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2021-05-02 12:06:44,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:06:44,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113227907] [2021-05-02 12:06:44,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113227907] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:44,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136087927] [2021-05-02 12:06:44,127 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 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 12:06:44,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:06:44,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:06:44,203 WARN L261 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 263 conjunts are in the unsatisfiable core [2021-05-02 12:06:44,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:06:44,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:44,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2021-05-02 12:06:45,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136087927] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:45,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:06:45,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-02 12:06:45,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017086394] [2021-05-02 12:06:45,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 12:06:45,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:06:45,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 12:06:45,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=3166, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 12:06:45,774 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 31 states have internal predecessors, (64), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-02 12:06:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:06:50,138 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2021-05-02 12:06:50,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 12:06:50,139 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 31 states have internal predecessors, (64), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 167 [2021-05-02 12:06:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:06:50,140 INFO L225 Difference]: With dead ends: 103 [2021-05-02 12:06:50,140 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 12:06:50,140 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 194 SyntacticMatches, 26 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1435 ImplicationChecksByTransitivity, 4994.9ms TimeCoverageRelationStatistics Valid=461, Invalid=11971, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 12:06:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 12:06:50,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-05-02 12:06:50,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 30 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 12:06:50,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2021-05-02 12:06:50,150 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 167 [2021-05-02 12:06:50,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:06:50,150 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2021-05-02 12:06:50,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 31 states have internal predecessors, (64), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-02 12:06:50,151 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2021-05-02 12:06:50,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 12:06:50,151 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:06:50,151 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:06:50,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-02 12:06:50,369 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:06:50,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:06:50,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1976710032, now seen corresponding path program 27 times [2021-05-02 12:06:50,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:06:50,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138149429] [2021-05-02 12:06:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:06:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:06:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:06:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:06:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:06:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:06:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:06:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:06:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:06:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:06:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:06:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:06:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:06:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:06:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:06:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:06:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:06:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:06:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:06:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:51,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:06:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:52,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:06:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:52,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:06:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:52,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:06:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:52,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:06:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:52,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:06:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:52,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:06:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:52,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:06:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:52,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:06:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:06:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:06:52,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2133 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-05-02 12:06:52,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:06:52,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138149429] [2021-05-02 12:06:52,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138149429] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:52,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497307670] [2021-05-02 12:06:52,020 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 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 12:06:57,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-02 12:06:57,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:06:57,026 WARN L261 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 278 conjunts are in the unsatisfiable core [2021-05-02 12:06:57,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:06:57,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:57,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:06:58,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2133 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-05-02 12:06:58,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497307670] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:06:58,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:06:58,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 60] total 62 [2021-05-02 12:06:58,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564446022] [2021-05-02 12:06:58,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 12:06:58,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:06:58,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 12:06:58,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=3633, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 12:06:58,789 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 33 states have internal predecessors, (68), 30 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 12:07:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:03,518 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2021-05-02 12:07:03,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 12:07:03,528 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 33 states have internal predecessors, (68), 30 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 173 [2021-05-02 12:07:03,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:03,529 INFO L225 Difference]: With dead ends: 106 [2021-05-02 12:07:03,529 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 12:07:03,530 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 199 SyntacticMatches, 27 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 5506.4ms TimeCoverageRelationStatistics Valid=482, Invalid=13324, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 12:07:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 12:07:03,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2021-05-02 12:07:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 31 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 12:07:03,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 126 transitions. [2021-05-02 12:07:03,540 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 126 transitions. Word has length 173 [2021-05-02 12:07:03,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:03,541 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 126 transitions. [2021-05-02 12:07:03,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 33 states have internal predecessors, (68), 30 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 12:07:03,541 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 126 transitions. [2021-05-02 12:07:03,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-02 12:07:03,541 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:03,541 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:03,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 12:07:03,742 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:03,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:03,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1243629166, now seen corresponding path program 28 times [2021-05-02 12:07:03,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:03,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852274367] [2021-05-02 12:07:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:07:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:07:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:07:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:07:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:07:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:07:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:07:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:07:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:07:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:07:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:07:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:07:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:07:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:07:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:07:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:07:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2296 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2021-05-02 12:07:05,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:05,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852274367] [2021-05-02 12:07:05,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852274367] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:05,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314854233] [2021-05-02 12:07:05,563 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 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 12:07:05,635 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:07:05,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:05,639 WARN L261 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 288 conjunts are in the unsatisfiable core [2021-05-02 12:07:05,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:05,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:05,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:05,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:05,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:05,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:05,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:05,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:05,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:05,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:05,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:05,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:05,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:05,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:05,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:06,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2296 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2021-05-02 12:07:07,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314854233] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:07,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:07,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 62] total 64 [2021-05-02 12:07:07,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374172752] [2021-05-02 12:07:07,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 12:07:07,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:07,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 12:07:07,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=3878, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 12:07:07,557 INFO L87 Difference]: Start difference. First operand 99 states and 126 transitions. Second operand has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 4 states have call predecessors, (33), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 12:07:12,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:12,754 INFO L93 Difference]: Finished difference Result 109 states and 138 transitions. [2021-05-02 12:07:12,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 12:07:12,755 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 4 states have call predecessors, (33), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 179 [2021-05-02 12:07:12,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:12,756 INFO L225 Difference]: With dead ends: 109 [2021-05-02 12:07:12,756 INFO L226 Difference]: Without dead ends: 104 [2021-05-02 12:07:12,757 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 206 SyntacticMatches, 28 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1661 ImplicationChecksByTransitivity, 5896.8ms TimeCoverageRelationStatistics Valid=499, Invalid=14263, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 12:07:12,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-02 12:07:12,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2021-05-02 12:07:12,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 32 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 12:07:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 130 transitions. [2021-05-02 12:07:12,767 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 130 transitions. Word has length 179 [2021-05-02 12:07:12,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:12,768 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 130 transitions. [2021-05-02 12:07:12,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 4 states have call predecessors, (33), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 12:07:12,768 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 130 transitions. [2021-05-02 12:07:12,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 12:07:12,769 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:12,769 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:12,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 12:07:12,984 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:12,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1002453708, now seen corresponding path program 29 times [2021-05-02 12:07:12,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:12,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69289644] [2021-05-02 12:07:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:14,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:07:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:07:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:07:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:07:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:07:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:07:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:07:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:07:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:07:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:07:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:07:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:07:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:07:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:07:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:07:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:07:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:07:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2465 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2021-05-02 12:07:15,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:15,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69289644] [2021-05-02 12:07:15,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69289644] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:15,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699668699] [2021-05-02 12:07:15,069 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 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 12:07:30,760 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-02 12:07:30,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:30,769 WARN L261 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 321 conjunts are in the unsatisfiable core [2021-05-02 12:07:30,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:30,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:30,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:30,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:30,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:30,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:30,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:30,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:30,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:31,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:32,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2465 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2021-05-02 12:07:33,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699668699] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:33,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:33,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-02 12:07:33,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686875980] [2021-05-02 12:07:33,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 12:07:33,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:33,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 12:07:33,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=3877, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 12:07:33,466 INFO L87 Difference]: Start difference. First operand 102 states and 130 transitions. Second operand has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 12:07:38,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:38,813 INFO L93 Difference]: Finished difference Result 112 states and 142 transitions. [2021-05-02 12:07:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 12:07:38,813 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 185 [2021-05-02 12:07:38,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:38,814 INFO L225 Difference]: With dead ends: 112 [2021-05-02 12:07:38,814 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 12:07:38,815 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 187 SyntacticMatches, 57 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 7057.6ms TimeCoverageRelationStatistics Valid=512, Invalid=14740, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 12:07:38,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 12:07:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-05-02 12:07:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 33 states have call successors, (33), 4 states have call predecessors, (33), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 12:07:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2021-05-02 12:07:38,826 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 134 transitions. Word has length 185 [2021-05-02 12:07:38,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:38,826 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-05-02 12:07:38,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 12:07:38,826 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 134 transitions. [2021-05-02 12:07:38,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 12:07:38,827 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:38,827 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:39,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 12:07:39,038 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:39,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:39,038 INFO L82 PathProgramCache]: Analyzing trace with hash 388165802, now seen corresponding path program 30 times [2021-05-02 12:07:39,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:39,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076926543] [2021-05-02 12:07:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:40,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:40,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:40,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:40,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:40,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:40,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:40,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:40,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:40,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:40,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:40,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:40,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:07:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:07:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:07:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:07:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:07:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:07:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:07:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:07:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:07:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:07:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:07:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:07:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:07:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:07:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:07:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:07:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:07:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:07:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-05-02 12:07:41,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:41,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076926543] [2021-05-02 12:07:41,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076926543] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:41,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050577275] [2021-05-02 12:07:41,044 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 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 12:07:45,050 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 12:07:45,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:07:45,060 WARN L261 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 303 conjunts are in the unsatisfiable core [2021-05-02 12:07:45,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:45,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:45,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:46,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-05-02 12:07:47,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050577275] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:47,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:47,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-02 12:07:47,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054838526] [2021-05-02 12:07:47,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 12:07:47,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:47,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 12:07:47,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=4130, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 12:07:47,209 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. Second operand has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 35 states have internal predecessors, (72), 32 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 12:07:53,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:07:53,022 INFO L93 Difference]: Finished difference Result 115 states and 146 transitions. [2021-05-02 12:07:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 12:07:53,023 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 35 states have internal predecessors, (72), 32 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 191 [2021-05-02 12:07:53,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:07:53,024 INFO L225 Difference]: With dead ends: 115 [2021-05-02 12:07:53,024 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 12:07:53,025 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 222 SyntacticMatches, 30 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1895 ImplicationChecksByTransitivity, 6710.0ms TimeCoverageRelationStatistics Valid=529, Invalid=15727, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 12:07:53,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 12:07:53,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2021-05-02 12:07:53,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 34 states have call successors, (34), 4 states have call predecessors, (34), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-02 12:07:53,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 138 transitions. [2021-05-02 12:07:53,037 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 138 transitions. Word has length 191 [2021-05-02 12:07:53,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:07:53,037 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 138 transitions. [2021-05-02 12:07:53,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 35 states have internal predecessors, (72), 32 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 12:07:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 138 transitions. [2021-05-02 12:07:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 12:07:53,038 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:07:53,038 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:07:53,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:07:53,247 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:07:53,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:07:53,247 INFO L82 PathProgramCache]: Analyzing trace with hash 143738888, now seen corresponding path program 31 times [2021-05-02 12:07:53,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:07:53,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49486825] [2021-05-02 12:07:53,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:07:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:07:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:07:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:07:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:07:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:07:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:07:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:07:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:07:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:07:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:07:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:07:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:07:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:07:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:07:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:07:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:07:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:07:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:07:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:07:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:07:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:07:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:07:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:07:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:07:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:07:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:07:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:07:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:07:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:07:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:07:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:07:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:07:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2021-05-02 12:07:55,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:07:55,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49486825] [2021-05-02 12:07:55,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49486825] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:55,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005531154] [2021-05-02 12:07:55,484 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 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 12:07:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:07:55,579 WARN L261 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 313 conjunts are in the unsatisfiable core [2021-05-02 12:07:55,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:07:55,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:55,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:56,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:07:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2021-05-02 12:07:57,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005531154] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:07:57,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:07:57,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 68 [2021-05-02 12:07:57,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76297664] [2021-05-02 12:07:57,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 12:07:57,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:07:57,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 12:07:57,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=4391, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 12:07:57,965 INFO L87 Difference]: Start difference. First operand 108 states and 138 transitions. Second operand has 68 states, 68 states have (on average 1.088235294117647) internal successors, (74), 36 states have internal predecessors, (74), 33 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-02 12:08:04,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:08:04,320 INFO L93 Difference]: Finished difference Result 118 states and 150 transitions. [2021-05-02 12:08:04,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 12:08:04,321 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.088235294117647) internal successors, (74), 36 states have internal predecessors, (74), 33 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 197 [2021-05-02 12:08:04,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:08:04,322 INFO L225 Difference]: With dead ends: 118 [2021-05-02 12:08:04,322 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 12:08:04,323 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 229 SyntacticMatches, 31 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2020 ImplicationChecksByTransitivity, 7433.6ms TimeCoverageRelationStatistics Valid=546, Invalid=16746, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 12:08:04,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 12:08:04,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-05-02 12:08:04,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 73 states have (on average 1.0136986301369864) internal successors, (74), 73 states have internal predecessors, (74), 35 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 12:08:04,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 142 transitions. [2021-05-02 12:08:04,335 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 142 transitions. Word has length 197 [2021-05-02 12:08:04,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:08:04,335 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 142 transitions. [2021-05-02 12:08:04,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 1.088235294117647) internal successors, (74), 36 states have internal predecessors, (74), 33 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-02 12:08:04,336 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 142 transitions. [2021-05-02 12:08:04,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 12:08:04,336 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:08:04,336 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:08:04,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:08:04,541 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:08:04,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:08:04,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1512841446, now seen corresponding path program 32 times [2021-05-02 12:08:04,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:08:04,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442984563] [2021-05-02 12:08:04,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:08:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:08:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:08:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:08:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:08:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:08:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:08:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:08:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:08:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:08:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:08:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:08:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:08:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:08:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:08:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:08:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:08:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:08:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:08:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:08:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:08:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:08:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:08:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:08:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:08:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:08:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:08:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:08:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:08:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:08:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:08:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:08:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:08:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:08:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3008 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2021-05-02 12:08:06,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:08:06,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442984563] [2021-05-02 12:08:06,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442984563] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:06,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106882509] [2021-05-02 12:08:06,957 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 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 12:08:07,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:08:07,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:08:07,044 WARN L261 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 323 conjunts are in the unsatisfiable core [2021-05-02 12:08:07,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:08:07,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:07,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:08,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3008 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2021-05-02 12:08:09,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106882509] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:09,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:08:09,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-02 12:08:09,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064597248] [2021-05-02 12:08:09,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 12:08:09,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:08:09,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 12:08:09,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=4660, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 12:08:09,525 INFO L87 Difference]: Start difference. First operand 111 states and 142 transitions. Second operand has 70 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 37 states have internal predecessors, (76), 34 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 12:08:16,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:08:16,182 INFO L93 Difference]: Finished difference Result 121 states and 154 transitions. [2021-05-02 12:08:16,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 12:08:16,187 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 37 states have internal predecessors, (76), 34 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 203 [2021-05-02 12:08:16,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:08:16,188 INFO L225 Difference]: With dead ends: 121 [2021-05-02 12:08:16,188 INFO L226 Difference]: Without dead ends: 116 [2021-05-02 12:08:16,189 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 236 SyntacticMatches, 32 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2149 ImplicationChecksByTransitivity, 7771.7ms TimeCoverageRelationStatistics Valid=563, Invalid=17797, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 12:08:16,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-02 12:08:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2021-05-02 12:08:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 36 states have call successors, (36), 4 states have call predecessors, (36), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 12:08:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 146 transitions. [2021-05-02 12:08:16,202 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 146 transitions. Word has length 203 [2021-05-02 12:08:16,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:08:16,202 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 146 transitions. [2021-05-02 12:08:16,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 37 states have internal predecessors, (76), 34 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 12:08:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 146 transitions. [2021-05-02 12:08:16,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 12:08:16,203 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:08:16,203 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:08:16,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-05-02 12:08:16,417 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:08:16,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:08:16,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1309910204, now seen corresponding path program 33 times [2021-05-02 12:08:16,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:08:16,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030063475] [2021-05-02 12:08:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:08:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:08:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:08:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:08:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:08:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:08:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:08:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:08:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:08:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:08:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:08:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:08:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:08:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:08:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:08:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:08:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:08:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:08:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:08:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:08:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:08:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:08:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:08:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:08:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:08:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:08:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:08:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:08:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:08:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:08:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:08:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:08:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:08:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:08:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:08:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3201 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2021-05-02 12:08:18,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:08:18,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030063475] [2021-05-02 12:08:18,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030063475] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:18,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807916871] [2021-05-02 12:08:18,870 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 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 12:08:23,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 12:08:23,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:08:23,642 WARN L261 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 333 conjunts are in the unsatisfiable core [2021-05-02 12:08:23,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:08:23,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:23,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:23,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:23,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:23,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:23,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:23,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:23,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:23,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:23,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:23,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:24,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:25,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3201 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2021-05-02 12:08:26,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807916871] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:26,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:08:26,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-02 12:08:26,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699625483] [2021-05-02 12:08:26,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 12:08:26,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:08:26,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 12:08:26,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=4937, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 12:08:26,288 INFO L87 Difference]: Start difference. First operand 114 states and 146 transitions. Second operand has 72 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 38 states have internal predecessors, (78), 35 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 12:08:33,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:08:33,440 INFO L93 Difference]: Finished difference Result 124 states and 158 transitions. [2021-05-02 12:08:33,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 12:08:33,441 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 38 states have internal predecessors, (78), 35 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 209 [2021-05-02 12:08:33,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:08:33,442 INFO L225 Difference]: With dead ends: 124 [2021-05-02 12:08:33,442 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 12:08:33,443 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 243 SyntacticMatches, 33 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2282 ImplicationChecksByTransitivity, 8209.4ms TimeCoverageRelationStatistics Valid=580, Invalid=18880, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 12:08:33,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 12:08:33,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2021-05-02 12:08:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.0129870129870129) internal successors, (78), 77 states have internal predecessors, (78), 37 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 12:08:33,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2021-05-02 12:08:33,456 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 209 [2021-05-02 12:08:33,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:08:33,465 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2021-05-02 12:08:33,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 38 states have internal predecessors, (78), 35 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 12:08:33,481 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2021-05-02 12:08:33,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-02 12:08:33,482 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:08:33,482 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:08:33,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:08:33,687 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:08:33,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:08:33,687 INFO L82 PathProgramCache]: Analyzing trace with hash -811411678, now seen corresponding path program 34 times [2021-05-02 12:08:33,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:08:33,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624679296] [2021-05-02 12:08:33,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:08:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:08:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:08:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:08:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:08:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:08:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:08:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:08:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:08:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:08:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:08:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:08:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:08:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:08:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:08:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:08:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:08:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:08:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:08:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:08:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:08:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:08:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:08:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:08:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:08:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:08:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:08:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:08:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:08:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:08:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:08:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:08:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:08:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:08:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:08:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:08:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3400 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2021-05-02 12:08:36,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:08:36,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624679296] [2021-05-02 12:08:36,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624679296] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:36,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837061820] [2021-05-02 12:08:36,457 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 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 12:08:36,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:08:36,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:08:36,534 WARN L261 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 348 conjunts are in the unsatisfiable core [2021-05-02 12:08:36,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:08:36,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:36,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:36,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:36,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:36,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:36,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:36,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:36,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:36,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:36,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:36,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:36,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:36,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:36,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:37,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:38,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:39,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:39,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:39,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:39,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:39,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:39,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:39,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:39,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:39,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:39,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:39,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:39,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:39,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:08:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3400 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2021-05-02 12:08:39,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837061820] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:39,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:08:39,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 74] total 76 [2021-05-02 12:08:39,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552522836] [2021-05-02 12:08:39,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 12:08:39,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:08:39,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 12:08:39,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=5516, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 12:08:39,503 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 12:08:47,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:08:47,145 INFO L93 Difference]: Finished difference Result 127 states and 162 transitions. [2021-05-02 12:08:47,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 12:08:47,146 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 215 [2021-05-02 12:08:47,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:08:47,147 INFO L225 Difference]: With dead ends: 127 [2021-05-02 12:08:47,147 INFO L226 Difference]: Without dead ends: 122 [2021-05-02 12:08:47,148 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 248 SyntacticMatches, 34 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2423 ImplicationChecksByTransitivity, 9113.7ms TimeCoverageRelationStatistics Valid=601, Invalid=20569, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 12:08:47,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-02 12:08:47,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-05-02 12:08:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 states have internal predecessors, (80), 38 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 12:08:47,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2021-05-02 12:08:47,162 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 215 [2021-05-02 12:08:47,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:08:47,163 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2021-05-02 12:08:47,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 12:08:47,163 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2021-05-02 12:08:47,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 12:08:47,163 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:08:47,164 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:08:47,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-05-02 12:08:47,377 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:08:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:08:47,377 INFO L82 PathProgramCache]: Analyzing trace with hash -889686912, now seen corresponding path program 35 times [2021-05-02 12:08:47,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:08:47,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265467888] [2021-05-02 12:08:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:08:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:08:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:08:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:08:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:08:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:08:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:08:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:08:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:08:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:08:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:08:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:08:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:08:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:08:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:08:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:08:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:08:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:08:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:08:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:08:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:08:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:08:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:08:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:08:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:08:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:08:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:08:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:08:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:08:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:08:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:08:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:08:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:08:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:08:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:08:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:08:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:08:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:08:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3605 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2021-05-02 12:08:50,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:08:50,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265467888] [2021-05-02 12:08:50,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265467888] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:08:50,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903738872] [2021-05-02 12:08:50,207 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 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 12:09:18,139 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-05-02 12:09:18,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:09:18,149 WARN L261 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 379 conjunts are in the unsatisfiable core [2021-05-02 12:09:18,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:09:18,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:18,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:19,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:20,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:21,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:22,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3605 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2021-05-02 12:09:22,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903738872] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:09:22,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:09:22,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 12:09:22,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852252191] [2021-05-02 12:09:22,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 12:09:22,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:09:22,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 12:09:22,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=5515, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 12:09:22,083 INFO L87 Difference]: Start difference. First operand 120 states and 154 transitions. Second operand has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 12:09:30,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:09:30,619 INFO L93 Difference]: Finished difference Result 130 states and 166 transitions. [2021-05-02 12:09:30,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 12:09:30,620 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 221 [2021-05-02 12:09:30,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:09:30,621 INFO L225 Difference]: With dead ends: 130 [2021-05-02 12:09:30,621 INFO L226 Difference]: Without dead ends: 125 [2021-05-02 12:09:30,622 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 231 SyntacticMatches, 61 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2612 ImplicationChecksByTransitivity, 10517.8ms TimeCoverageRelationStatistics Valid=614, Invalid=21142, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 12:09:30,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-02 12:09:30,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-05-02 12:09:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 81 states have internal predecessors, (82), 39 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 12:09:30,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 158 transitions. [2021-05-02 12:09:30,637 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 158 transitions. Word has length 221 [2021-05-02 12:09:30,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:09:30,637 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 158 transitions. [2021-05-02 12:09:30,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 12:09:30,637 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 158 transitions. [2021-05-02 12:09:30,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-02 12:09:30,638 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:09:30,638 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:09:30,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:09:30,846 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:09:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:09:30,846 INFO L82 PathProgramCache]: Analyzing trace with hash -781315234, now seen corresponding path program 36 times [2021-05-02 12:09:30,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:09:30,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218806334] [2021-05-02 12:09:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:09:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:09:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:09:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:09:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:09:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:09:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:09:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:09:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:09:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:09:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:09:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:09:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:09:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:09:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:09:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:09:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:09:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:09:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:09:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:09:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:09:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:09:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:09:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:09:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:09:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:09:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:09:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:09:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:09:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:09:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:09:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:09:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:09:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:09:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:09:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:09:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:09:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:09:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2021-05-02 12:09:33,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:09:33,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218806334] [2021-05-02 12:09:33,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218806334] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:09:33,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928487026] [2021-05-02 12:09:33,987 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 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 12:09:42,668 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-02 12:09:42,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:09:42,681 WARN L261 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 368 conjunts are in the unsatisfiable core [2021-05-02 12:09:42,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:09:42,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:42,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:42,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:42,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:42,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:42,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:42,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:42,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:43,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:44,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:45,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2021-05-02 12:09:46,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928487026] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:09:46,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:09:46,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 78] total 80 [2021-05-02 12:09:46,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252758102] [2021-05-02 12:09:46,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 12:09:46,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:09:46,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 12:09:46,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=6126, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 12:09:46,358 INFO L87 Difference]: Start difference. First operand 123 states and 158 transitions. Second operand has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 12:09:55,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:09:55,970 INFO L93 Difference]: Finished difference Result 133 states and 170 transitions. [2021-05-02 12:09:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 12:09:55,971 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 227 [2021-05-02 12:09:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:09:55,972 INFO L225 Difference]: With dead ends: 133 [2021-05-02 12:09:55,972 INFO L226 Difference]: Without dead ends: 128 [2021-05-02 12:09:55,973 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 262 SyntacticMatches, 36 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2709 ImplicationChecksByTransitivity, 10950.4ms TimeCoverageRelationStatistics Valid=635, Invalid=22927, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 12:09:55,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-02 12:09:55,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2021-05-02 12:09:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 83 states have internal predecessors, (84), 40 states have call successors, (40), 4 states have call predecessors, (40), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 12:09:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 162 transitions. [2021-05-02 12:09:55,988 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 162 transitions. Word has length 227 [2021-05-02 12:09:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:09:55,989 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 162 transitions. [2021-05-02 12:09:55,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 12:09:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 162 transitions. [2021-05-02 12:09:55,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-02 12:09:55,990 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:09:55,990 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:09:56,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 12:09:56,197 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:09:56,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:09:56,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1683788732, now seen corresponding path program 37 times [2021-05-02 12:09:56,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:09:56,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450995151] [2021-05-02 12:09:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:09:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:09:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:09:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:09:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:09:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:09:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:09:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:09:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:09:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:09:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:09:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:09:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:09:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:09:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:09:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:09:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:09:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:09:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:09:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:09:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:09:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:09:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:09:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:09:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:09:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:09:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:09:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:09:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:09:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:09:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:09:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:09:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:09:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:09:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:09:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:09:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:09:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:09:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:09:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4033 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2021-05-02 12:09:59,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:09:59,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450995151] [2021-05-02 12:09:59,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450995151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:09:59,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298277984] [2021-05-02 12:09:59,747 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 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 12:09:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:09:59,842 WARN L261 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 373 conjunts are in the unsatisfiable core [2021-05-02 12:09:59,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:09:59,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:09:59,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:00,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:01,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:02,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4033 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2021-05-02 12:10:03,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298277984] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:10:03,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:10:03,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78] total 80 [2021-05-02 12:10:03,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120987587] [2021-05-02 12:10:03,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 12:10:03,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:10:03,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 12:10:03,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=6125, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 12:10:03,990 INFO L87 Difference]: Start difference. First operand 126 states and 162 transitions. Second operand has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 12:10:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:10:15,254 INFO L93 Difference]: Finished difference Result 136 states and 174 transitions. [2021-05-02 12:10:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 12:10:15,255 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 233 [2021-05-02 12:10:15,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:10:15,256 INFO L225 Difference]: With dead ends: 136 [2021-05-02 12:10:15,256 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 12:10:15,257 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 271 SyntacticMatches, 37 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2854 ImplicationChecksByTransitivity, 12581.5ms TimeCoverageRelationStatistics Valid=648, Invalid=23532, Unknown=0, NotChecked=0, Total=24180 [2021-05-02 12:10:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 12:10:15,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2021-05-02 12:10:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 85 states have (on average 1.011764705882353) internal successors, (86), 85 states have internal predecessors, (86), 41 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 12:10:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 166 transitions. [2021-05-02 12:10:15,273 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 166 transitions. Word has length 233 [2021-05-02 12:10:15,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:10:15,274 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 166 transitions. [2021-05-02 12:10:15,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 12:10:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 166 transitions. [2021-05-02 12:10:15,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-02 12:10:15,274 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:10:15,275 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:10:15,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 12:10:15,480 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:10:15,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:10:15,481 INFO L82 PathProgramCache]: Analyzing trace with hash 385144218, now seen corresponding path program 38 times [2021-05-02 12:10:15,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:10:15,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271201387] [2021-05-02 12:10:15,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:10:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:10:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:10:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:10:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:10:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:10:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:10:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:10:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:10:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:10:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:10:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:10:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:10:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:10:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:10:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:10:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:10:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:10:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:10:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:10:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:10:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:10:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:10:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:10:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:10:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:10:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:10:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:10:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:10:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:10:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:10:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:10:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:10:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:10:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:10:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:10:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:10:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:10:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:10:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:10:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4256 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 2109 trivial. 0 not checked. [2021-05-02 12:10:19,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:10:19,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271201387] [2021-05-02 12:10:19,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271201387] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:10:19,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051313780] [2021-05-02 12:10:19,398 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 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 12:10:19,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:10:19,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:10:19,489 WARN L261 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 383 conjunts are in the unsatisfiable core [2021-05-02 12:10:19,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:10:19,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:19,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:19,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:19,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:19,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:19,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:19,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:19,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:19,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:19,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:19,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:20,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:21,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:22,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4256 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 2109 trivial. 0 not checked. [2021-05-02 12:10:23,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051313780] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:10:23,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:10:23,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 12:10:23,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677573182] [2021-05-02 12:10:23,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 12:10:23,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:10:23,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 12:10:23,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=6442, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 12:10:23,933 INFO L87 Difference]: Start difference. First operand 129 states and 166 transitions. Second operand has 82 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 43 states have internal predecessors, (88), 40 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 12:10:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:10:35,404 INFO L93 Difference]: Finished difference Result 139 states and 178 transitions. [2021-05-02 12:10:35,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 12:10:35,405 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 43 states have internal predecessors, (88), 40 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 239 [2021-05-02 12:10:35,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:10:35,406 INFO L225 Difference]: With dead ends: 139 [2021-05-02 12:10:35,406 INFO L226 Difference]: Without dead ends: 134 [2021-05-02 12:10:35,407 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 278 SyntacticMatches, 38 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3007 ImplicationChecksByTransitivity, 13172.0ms TimeCoverageRelationStatistics Valid=665, Invalid=24775, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 12:10:35,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-05-02 12:10:35,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2021-05-02 12:10:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 87 states have (on average 1.0114942528735633) internal successors, (88), 87 states have internal predecessors, (88), 42 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 12:10:35,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 170 transitions. [2021-05-02 12:10:35,424 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 170 transitions. Word has length 239 [2021-05-02 12:10:35,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:10:35,424 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 170 transitions. [2021-05-02 12:10:35,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 43 states have internal predecessors, (88), 40 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 12:10:35,425 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 170 transitions. [2021-05-02 12:10:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-02 12:10:35,425 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:10:35,425 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:10:35,626 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 12:10:35,626 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:10:35,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:10:35,626 INFO L82 PathProgramCache]: Analyzing trace with hash -868239112, now seen corresponding path program 39 times [2021-05-02 12:10:35,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:10:35,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380802334] [2021-05-02 12:10:35,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:10:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:10:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:10:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:10:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:10:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:10:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:10:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:10:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:10:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:10:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:10:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:10:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:10:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:10:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:10:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:10:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:10:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:10:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:10:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:10:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:10:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:10:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:10:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:10:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:10:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:10:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:10:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:10:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:10:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:10:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:10:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:10:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:10:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:10:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:10:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:10:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:10:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:10:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:10:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:10:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:10:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:10:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-05-02 12:10:39,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:10:39,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380802334] [2021-05-02 12:10:39,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380802334] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:10:39,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325790290] [2021-05-02 12:10:39,999 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 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 12:10:44,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-05-02 12:10:44,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:10:44,481 WARN L261 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 400 conjunts are in the unsatisfiable core [2021-05-02 12:10:44,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:10:44,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:44,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:44,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:44,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:44,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:44,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:44,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:44,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:44,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:44,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:44,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:45,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:46,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:47,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:48,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:49,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:49,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:49,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:49,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:49,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:49,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:49,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:49,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:49,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:49,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:49,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:49,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:49,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:10:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-05-02 12:10:49,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325790290] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:10:49,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:10:49,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-02 12:10:49,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426628278] [2021-05-02 12:10:49,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 12:10:49,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:10:49,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 12:10:49,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=6767, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 12:10:49,657 INFO L87 Difference]: Start difference. First operand 132 states and 170 transitions. Second operand has 84 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 44 states have internal predecessors, (90), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 12:11:02,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:11:02,087 INFO L93 Difference]: Finished difference Result 142 states and 182 transitions. [2021-05-02 12:11:02,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 12:11:02,088 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 44 states have internal predecessors, (90), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 245 [2021-05-02 12:11:02,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:11:02,089 INFO L225 Difference]: With dead ends: 142 [2021-05-02 12:11:02,089 INFO L226 Difference]: Without dead ends: 137 [2021-05-02 12:11:02,090 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 283 SyntacticMatches, 41 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3166 ImplicationChecksByTransitivity, 14677.3ms TimeCoverageRelationStatistics Valid=682, Invalid=26050, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 12:11:02,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-02 12:11:02,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2021-05-02 12:11:02,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 89 states have (on average 1.0112359550561798) internal successors, (90), 89 states have internal predecessors, (90), 43 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-02 12:11:02,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 174 transitions. [2021-05-02 12:11:02,108 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 174 transitions. Word has length 245 [2021-05-02 12:11:02,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:11:02,108 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 174 transitions. [2021-05-02 12:11:02,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 44 states have internal predecessors, (90), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 12:11:02,108 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 174 transitions. [2021-05-02 12:11:02,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-05-02 12:11:02,109 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:11:02,109 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:11:02,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:11:02,314 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:11:02,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:11:02,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1964907990, now seen corresponding path program 40 times [2021-05-02 12:11:02,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:11:02,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378860904] [2021-05-02 12:11:02,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:11:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:11:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:11:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:11:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:11:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:11:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:11:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:11:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:11:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:11:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:11:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:11:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:11:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:11:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:11:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:11:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:11:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:11:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:11:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:11:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:11:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:11:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:11:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:11:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:11:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:11:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:11:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:11:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:11:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:11:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:11:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:11:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:11:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:11:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:11:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:11:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:11:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:11:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:11:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:06,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:11:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:07,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:11:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:07,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:11:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4720 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 2340 trivial. 0 not checked. [2021-05-02 12:11:07,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:11:07,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378860904] [2021-05-02 12:11:07,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378860904] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:11:07,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501751108] [2021-05-02 12:11:07,010 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 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 12:11:07,088 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:11:07,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:11:07,093 WARN L261 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 408 conjunts are in the unsatisfiable core [2021-05-02 12:11:07,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:11:07,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:07,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:08,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:09,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:10,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:11,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:12,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:12,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:12,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:12,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:12,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:12,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:12,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:11:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4720 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 2340 trivial. 0 not checked. [2021-05-02 12:11:12,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501751108] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:11:12,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:11:12,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 86] total 88 [2021-05-02 12:11:12,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254123760] [2021-05-02 12:11:12,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 12:11:12,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:11:12,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 12:11:12,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=7442, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 12:11:12,459 INFO L87 Difference]: Start difference. First operand 135 states and 174 transitions. Second operand has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-02 12:11:25,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:11:25,973 INFO L93 Difference]: Finished difference Result 145 states and 186 transitions. [2021-05-02 12:11:25,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 12:11:25,974 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 251 [2021-05-02 12:11:25,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:11:25,975 INFO L225 Difference]: With dead ends: 145 [2021-05-02 12:11:25,975 INFO L226 Difference]: Without dead ends: 140 [2021-05-02 12:11:25,976 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 290 SyntacticMatches, 40 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3329 ImplicationChecksByTransitivity, 15639.6ms TimeCoverageRelationStatistics Valid=703, Invalid=28027, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 12:11:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-05-02 12:11:25,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2021-05-02 12:11:25,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 91 states have (on average 1.010989010989011) internal successors, (92), 91 states have internal predecessors, (92), 44 states have call successors, (44), 4 states have call predecessors, (44), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-02 12:11:25,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 178 transitions. [2021-05-02 12:11:26,000 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 178 transitions. Word has length 251 [2021-05-02 12:11:26,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:11:26,000 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 178 transitions. [2021-05-02 12:11:26,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-02 12:11:26,000 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 178 transitions. [2021-05-02 12:11:26,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-02 12:11:26,001 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:11:26,001 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:11:26,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:11:26,211 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:11:26,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:11:26,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1313399860, now seen corresponding path program 41 times [2021-05-02 12:11:26,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:11:26,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074031670] [2021-05-02 12:11:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:11:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:30,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:11:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:30,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:11:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:11:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:11:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:11:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:11:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:11:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:11:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:11:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:11:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:11:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:11:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:11:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:11:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:11:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:11:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:11:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:11:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:11:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:11:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:11:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:11:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:11:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:11:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:11:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:11:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:11:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:11:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:11:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:11:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:11:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:11:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:11:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:11:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:11:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:11:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:11:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:11:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:11:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:11:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:11:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 12:11:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:11:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4961 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 2460 trivial. 0 not checked. [2021-05-02 12:11:31,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:11:31,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074031670] [2021-05-02 12:11:31,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074031670] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:11:31,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820039802] [2021-05-02 12:11:31,176 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 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 12:13:05,306 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 12:13:05,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:13:05,341 WARN L261 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 443 conjunts are in the unsatisfiable core [2021-05-02 12:13:05,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:13:05,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:05,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:05,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:05,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:05,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:05,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:05,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:05,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:05,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:05,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:05,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:06,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:07,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:08,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:09,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:10,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:11,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:12,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:12,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:12,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:12,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:12,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:12,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:12,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:12,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4961 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 2460 trivial. 0 not checked. [2021-05-02 12:13:12,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820039802] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:13:12,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:13:12,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 12:13:12,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792050416] [2021-05-02 12:13:12,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 12:13:12,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:13:12,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 12:13:12,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=7441, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 12:13:12,518 INFO L87 Difference]: Start difference. First operand 138 states and 178 transitions. Second operand has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-02 12:13:26,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:13:26,993 INFO L93 Difference]: Finished difference Result 148 states and 190 transitions. [2021-05-02 12:13:26,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 12:13:26,995 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 257 [2021-05-02 12:13:26,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:13:26,996 INFO L225 Difference]: With dead ends: 148 [2021-05-02 12:13:26,996 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 12:13:26,997 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 269 SyntacticMatches, 71 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3550 ImplicationChecksByTransitivity, 18219.0ms TimeCoverageRelationStatistics Valid=716, Invalid=28696, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 12:13:26,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 12:13:27,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-05-02 12:13:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 45 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-02 12:13:27,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 182 transitions. [2021-05-02 12:13:27,015 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 182 transitions. Word has length 257 [2021-05-02 12:13:27,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:13:27,015 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 182 transitions. [2021-05-02 12:13:27,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-02 12:13:27,015 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 182 transitions. [2021-05-02 12:13:27,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-05-02 12:13:27,016 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:13:27,016 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:13:27,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-05-02 12:13:27,223 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:13:27,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:13:27,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1638863854, now seen corresponding path program 42 times [2021-05-02 12:13:27,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:13:27,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854078975] [2021-05-02 12:13:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:13:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:13:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:13:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:13:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:13:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:13:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:13:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:13:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:13:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:13:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:13:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:13:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:13:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:13:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:13:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:13:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:13:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:13:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:13:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:13:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:13:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:13:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:13:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:13:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:13:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:13:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:13:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:13:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:13:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:13:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:13:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:13:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:13:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:13:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:13:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:13:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:13:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:13:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:13:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:13:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:13:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:13:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 12:13:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 12:13:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:13:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 5208 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 2583 trivial. 0 not checked. [2021-05-02 12:13:32,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:13:32,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854078975] [2021-05-02 12:13:32,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854078975] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:13:32,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762573745] [2021-05-02 12:13:32,678 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 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 12:13:44,699 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-02 12:13:44,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:13:44,711 WARN L261 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 432 conjunts are in the unsatisfiable core [2021-05-02 12:13:44,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:13:44,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:44,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:44,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:45,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:46,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:47,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:48,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:49,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:50,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:51,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:51,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:51,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:51,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:13:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5208 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 2583 trivial. 0 not checked. [2021-05-02 12:13:51,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762573745] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:13:51,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:13:51,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-02 12:13:51,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978174689] [2021-05-02 12:13:51,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 12:13:51,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:13:51,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 12:13:51,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=7790, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 12:13:51,492 INFO L87 Difference]: Start difference. First operand 141 states and 182 transitions. Second operand has 90 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 47 states have internal predecessors, (96), 44 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-02 12:14:07,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:14:07,425 INFO L93 Difference]: Finished difference Result 151 states and 194 transitions. [2021-05-02 12:14:07,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 12:14:07,427 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 47 states have internal predecessors, (96), 44 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 263 [2021-05-02 12:14:07,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:14:07,427 INFO L225 Difference]: With dead ends: 151 [2021-05-02 12:14:07,428 INFO L226 Difference]: Without dead ends: 146 [2021-05-02 12:14:07,429 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 302 SyntacticMatches, 46 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3665 ImplicationChecksByTransitivity, 18872.3ms TimeCoverageRelationStatistics Valid=733, Invalid=30067, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 12:14:07,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-02 12:14:07,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2021-05-02 12:14:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 46 states have call successors, (46), 4 states have call predecessors, (46), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-02 12:14:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 186 transitions. [2021-05-02 12:14:07,447 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 186 transitions. Word has length 263 [2021-05-02 12:14:07,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:14:07,448 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 186 transitions. [2021-05-02 12:14:07,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 47 states have internal predecessors, (96), 44 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-02 12:14:07,448 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 186 transitions. [2021-05-02 12:14:07,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-02 12:14:07,449 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:14:07,449 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:14:07,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:14:07,653 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:14:07,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:14:07,653 INFO L82 PathProgramCache]: Analyzing trace with hash -207678096, now seen corresponding path program 43 times [2021-05-02 12:14:07,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:14:07,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240604893] [2021-05-02 12:14:07,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:14:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:14:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:14:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:14:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:14:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:14:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:14:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:14:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:14:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:14:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:14:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:14:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:14:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:14:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:14:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:14:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:14:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:14:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:14:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:14:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:14:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:14:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:14:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:14:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:14:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:14:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:14:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:14:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:14:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:14:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:14:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:14:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:14:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:14:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:14:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:14:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:14:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:14:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:14:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:14:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:14:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:14:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 12:14:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 12:14:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 12:14:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5461 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 2709 trivial. 0 not checked. [2021-05-02 12:14:13,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:14:13,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240604893] [2021-05-02 12:14:13,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240604893] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:14:13,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144046222] [2021-05-02 12:14:13,645 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 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 12:14:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:13,745 WARN L261 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 433 conjunts are in the unsatisfiable core [2021-05-02 12:14:13,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:14:13,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:13,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:14,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:15,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:16,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:17,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:18,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:19,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5461 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 2709 trivial. 0 not checked. [2021-05-02 12:14:20,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144046222] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:14:20,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:14:20,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90] total 92 [2021-05-02 12:14:20,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993265592] [2021-05-02 12:14:20,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 12:14:20,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:14:20,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 12:14:20,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=8147, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 12:14:20,995 INFO L87 Difference]: Start difference. First operand 144 states and 186 transitions. Second operand has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 48 states have internal predecessors, (98), 45 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-02 12:14:38,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:14:38,992 INFO L93 Difference]: Finished difference Result 154 states and 198 transitions. [2021-05-02 12:14:38,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 12:14:38,994 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 48 states have internal predecessors, (98), 45 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 269 [2021-05-02 12:14:38,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:14:38,995 INFO L225 Difference]: With dead ends: 154 [2021-05-02 12:14:38,995 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 12:14:38,996 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 313 SyntacticMatches, 43 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3832 ImplicationChecksByTransitivity, 20630.1ms TimeCoverageRelationStatistics Valid=750, Invalid=31470, Unknown=0, NotChecked=0, Total=32220 [2021-05-02 12:14:38,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 12:14:39,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2021-05-02 12:14:39,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 97 states have (on average 1.0103092783505154) internal successors, (98), 97 states have internal predecessors, (98), 47 states have call successors, (47), 4 states have call predecessors, (47), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 12:14:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 190 transitions. [2021-05-02 12:14:39,016 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 190 transitions. Word has length 269 [2021-05-02 12:14:39,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:14:39,017 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 190 transitions. [2021-05-02 12:14:39,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 48 states have internal predecessors, (98), 45 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-02 12:14:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 190 transitions. [2021-05-02 12:14:39,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-05-02 12:14:39,018 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:14:39,018 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:14:39,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:14:39,233 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:14:39,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:14:39,233 INFO L82 PathProgramCache]: Analyzing trace with hash -495697842, now seen corresponding path program 44 times [2021-05-02 12:14:39,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:14:39,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511029209] [2021-05-02 12:14:39,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:14:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:14:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:14:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:14:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:14:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:14:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:14:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:14:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:14:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:14:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:14:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:14:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:14:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:14:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:14:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:14:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:14:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:14:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:14:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:14:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:14:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:14:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:14:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:14:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:14:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:14:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:14:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:14:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:45,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:14:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:14:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:14:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:14:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:14:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:14:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:14:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:14:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:14:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:14:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:14:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:14:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:14:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:14:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 12:14:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 12:14:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 12:14:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 12:14:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:14:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5720 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 2838 trivial. 0 not checked. [2021-05-02 12:14:46,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:14:46,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511029209] [2021-05-02 12:14:46,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511029209] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:14:46,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882068975] [2021-05-02 12:14:46,059 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 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 12:14:46,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:14:46,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:14:46,163 WARN L261 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 443 conjunts are in the unsatisfiable core [2021-05-02 12:14:46,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:14:46,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:46,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:46,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:46,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:46,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:46,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:46,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:46,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:46,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:46,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:46,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:47,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:48,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:49,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:50,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:51,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:52,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:53,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:14:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5720 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 2838 trivial. 0 not checked. [2021-05-02 12:14:54,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882068975] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:14:54,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:14:54,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 12:14:54,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690434334] [2021-05-02 12:14:54,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 12:14:54,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:14:54,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 12:14:54,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=8512, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 12:14:54,228 INFO L87 Difference]: Start difference. First operand 147 states and 190 transitions. Second operand has 94 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 49 states have internal predecessors, (100), 46 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 12:15:16,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:15:16,778 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2021-05-02 12:15:16,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 12:15:16,779 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 49 states have internal predecessors, (100), 46 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 275 [2021-05-02 12:15:16,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:15:16,780 INFO L225 Difference]: With dead ends: 157 [2021-05-02 12:15:16,780 INFO L226 Difference]: Without dead ends: 152 [2021-05-02 12:15:16,782 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 320 SyntacticMatches, 44 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4009 ImplicationChecksByTransitivity, 24067.2ms TimeCoverageRelationStatistics Valid=767, Invalid=32905, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 12:15:16,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-02 12:15:16,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2021-05-02 12:15:16,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 48 states have call successors, (48), 4 states have call predecessors, (48), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-02 12:15:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 194 transitions. [2021-05-02 12:15:16,803 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 194 transitions. Word has length 275 [2021-05-02 12:15:16,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:15:16,803 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 194 transitions. [2021-05-02 12:15:16,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 49 states have internal predecessors, (100), 46 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 12:15:16,803 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 194 transitions. [2021-05-02 12:15:16,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-05-02 12:15:16,804 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:15:16,804 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:15:17,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-02 12:15:17,005 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:15:17,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:15:17,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1122585772, now seen corresponding path program 45 times [2021-05-02 12:15:17,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:15:17,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531382146] [2021-05-02 12:15:17,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:15:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:15:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:15:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:15:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:15:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:15:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:15:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:15:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:15:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:15:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:15:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:15:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:15:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:15:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:15:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:15:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:15:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:15:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:15:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:15:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:15:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:15:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:15:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:15:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:15:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:15:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:15:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:15:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:15:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:15:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:15:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:15:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:15:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:15:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:15:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:15:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:15:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:15:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:15:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:15:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:15:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:15:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 12:15:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 12:15:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 12:15:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 12:15:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 12:15:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:15:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5985 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-05-02 12:15:25,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:15:25,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531382146] [2021-05-02 12:15:25,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531382146] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:15:25,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741414758] [2021-05-02 12:15:25,402 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 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 12:15:41,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 12:15:41,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:15:41,714 WARN L261 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 481 conjunts are in the unsatisfiable core [2021-05-02 12:15:41,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:15:41,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:41,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:42,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:42,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:42,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:42,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:42,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:42,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:42,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:42,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:42,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:42,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:42,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:42,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:43,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:43,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:43,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:43,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:43,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:43,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:43,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:43,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:43,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:43,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:43,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:43,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:44,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:45,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:45,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:45,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:45,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:45,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:45,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:45,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:45,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:45,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:45,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:45,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:45,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:46,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:47,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:48,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:49,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:50,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:51,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:52,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:53,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:54,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:54,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:54,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:54,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:54,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:54,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:55,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:55,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:55,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:55,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:55,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:55,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:15:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5985 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-05-02 12:15:56,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741414758] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:15:56,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:15:56,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-02 12:15:56,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172853627] [2021-05-02 12:15:56,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 12:15:56,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:15:56,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 12:15:56,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=8885, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 12:15:56,089 INFO L87 Difference]: Start difference. First operand 150 states and 194 transitions. Second operand has 96 states, 96 states have (on average 1.0625) internal successors, (102), 50 states have internal predecessors, (102), 47 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-02 12:16:23,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:16:23,328 INFO L93 Difference]: Finished difference Result 160 states and 206 transitions. [2021-05-02 12:16:23,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 12:16:23,330 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0625) internal successors, (102), 50 states have internal predecessors, (102), 47 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 281 [2021-05-02 12:16:23,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:16:23,331 INFO L225 Difference]: With dead ends: 160 [2021-05-02 12:16:23,331 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 12:16:23,332 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 304 SyntacticMatches, 68 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4234 ImplicationChecksByTransitivity, 33563.0ms TimeCoverageRelationStatistics Valid=784, Invalid=34372, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 12:16:23,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 12:16:23,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2021-05-02 12:16:23,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 101 states have (on average 1.00990099009901) internal successors, (102), 101 states have internal predecessors, (102), 49 states have call successors, (49), 4 states have call predecessors, (49), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 12:16:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 198 transitions. [2021-05-02 12:16:23,354 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 198 transitions. Word has length 281 [2021-05-02 12:16:23,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:16:23,354 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 198 transitions. [2021-05-02 12:16:23,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 1.0625) internal successors, (102), 50 states have internal predecessors, (102), 47 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-02 12:16:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 198 transitions. [2021-05-02 12:16:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-05-02 12:16:23,356 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:16:23,356 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:16:23,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-05-02 12:16:23,562 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:16:23,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:16:23,562 INFO L82 PathProgramCache]: Analyzing trace with hash -286319990, now seen corresponding path program 46 times [2021-05-02 12:16:23,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:16:23,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631127489] [2021-05-02 12:16:23,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:16:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:16:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:16:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:16:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:16:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:16:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:16:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:16:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:16:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:16:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:16:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:16:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:16:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:16:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:16:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:16:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:16:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:16:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:16:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:16:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:16:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:16:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:16:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:16:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:16:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:16:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:16:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:16:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:16:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:16:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:16:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:16:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:16:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:16:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:16:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:16:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:16:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:16:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:16:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:16:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:16:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:16:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 12:16:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 12:16:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 12:16:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 12:16:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 12:16:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-05-02 12:16:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:16:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6256 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 3105 trivial. 0 not checked. [2021-05-02 12:16:33,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:16:33,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631127489] [2021-05-02 12:16:33,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631127489] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:16:33,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844273978] [2021-05-02 12:16:33,472 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 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 12:16:33,591 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:16:33,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:16:33,597 WARN L261 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 468 conjunts are in the unsatisfiable core [2021-05-02 12:16:33,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:16:33,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:33,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:34,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:34,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:34,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:34,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:34,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:34,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:34,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:34,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:34,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:34,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:34,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:34,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:35,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:35,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:35,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:35,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:35,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:35,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:35,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:35,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:35,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:35,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:35,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:36,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:36,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:36,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:36,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:36,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:36,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:36,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:36,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:36,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:36,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:37,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:37,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:37,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:37,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:37,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:37,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:37,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:37,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:37,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:37,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:37,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:37,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:38,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:38,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:38,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:38,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:38,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:38,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:38,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:38,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:38,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:38,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:38,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:38,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:39,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:39,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:39,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:39,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:39,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:39,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:39,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:39,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:39,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:39,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:39,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:39,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:40,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:40,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:40,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:40,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:40,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:40,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:40,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:40,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:40,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:41,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:41,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:41,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:41,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:41,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:41,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:41,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:41,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:41,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:41,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:41,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:41,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:42,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:42,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:42,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:42,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:42,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:42,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:42,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:42,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:42,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:42,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:43,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:43,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:43,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:43,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:43,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:43,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:43,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:43,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:43,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:43,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:43,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:44,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:44,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:44,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:44,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:44,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:44,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:44,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:44,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:44,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:44,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:44,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:44,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:45,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:45,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:45,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:45,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:45,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:45,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:45,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:45,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:45,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:45,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:46,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:46,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:46,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:16:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6256 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 3105 trivial. 0 not checked. [2021-05-02 12:16:46,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844273978] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:16:46,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:16:46,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 98] total 100 [2021-05-02 12:16:46,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106691833] [2021-05-02 12:16:46,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 12:16:46,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:16:46,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 12:16:46,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=9656, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 12:16:46,559 INFO L87 Difference]: Start difference. First operand 153 states and 198 transitions. Second operand has 100 states, 100 states have (on average 1.06) internal successors, (106), 52 states have internal predecessors, (106), 49 states have call successors, (51), 4 states have call predecessors, (51), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 12:17:18,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:17:18,047 INFO L93 Difference]: Finished difference Result 163 states and 210 transitions. [2021-05-02 12:17:18,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 12:17:18,050 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.06) internal successors, (106), 52 states have internal predecessors, (106), 49 states have call successors, (51), 4 states have call predecessors, (51), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 287 [2021-05-02 12:17:18,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:17:18,051 INFO L225 Difference]: With dead ends: 163 [2021-05-02 12:17:18,051 INFO L226 Difference]: Without dead ends: 158 [2021-05-02 12:17:18,053 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 332 SyntacticMatches, 46 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4379 ImplicationChecksByTransitivity, 35057.3ms TimeCoverageRelationStatistics Valid=805, Invalid=36637, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 12:17:18,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-05-02 12:17:18,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2021-05-02 12:17:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 103 states have (on average 1.0097087378640777) internal successors, (104), 103 states have internal predecessors, (104), 50 states have call successors, (50), 4 states have call predecessors, (50), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-02 12:17:18,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 202 transitions. [2021-05-02 12:17:18,075 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 202 transitions. Word has length 287 [2021-05-02 12:17:18,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:17:18,075 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 202 transitions. [2021-05-02 12:17:18,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 1.06) internal successors, (106), 52 states have internal predecessors, (106), 49 states have call successors, (51), 4 states have call predecessors, (51), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 12:17:18,075 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 202 transitions. [2021-05-02 12:17:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-02 12:17:18,076 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:17:18,076 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:17:18,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-05-02 12:17:18,289 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:17:18,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:17:18,289 INFO L82 PathProgramCache]: Analyzing trace with hash 5147112, now seen corresponding path program 47 times [2021-05-02 12:17:18,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:17:18,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202942562] [2021-05-02 12:17:18,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:17:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:17:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 12:17:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 12:17:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 12:17:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 12:17:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 12:17:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:17:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:17:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:17:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:17:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 12:17:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 12:17:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 12:17:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 12:17:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 12:17:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 12:17:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 12:17:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 12:17:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 12:17:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 12:17:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 12:17:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 12:17:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 12:17:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 12:17:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 12:17:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 12:17:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 12:17:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 12:17:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 12:17:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 12:17:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 12:17:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 12:17:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 12:17:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 12:17:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 12:17:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 12:17:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 12:17:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 12:17:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 12:17:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 12:17:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 12:17:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 12:17:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 12:17:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 12:17:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 12:17:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 12:17:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-05-02 12:17:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-05-02 12:17:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:17:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6533 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 3243 trivial. 0 not checked. [2021-05-02 12:17:29,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:17:29,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202942562] [2021-05-02 12:17:29,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202942562] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:17:29,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412356725] [2021-05-02 12:17:29,512 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 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