/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:11:42,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:11:42,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:11:42,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:11:42,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:11:42,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:11:42,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:11:42,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:11:42,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:11:42,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:11:42,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:11:42,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:11:42,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:11:42,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:11:42,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:11:42,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:11:42,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:11:42,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:11:42,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:11:42,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:11:42,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:11:42,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:11:42,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:11:42,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:11:42,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:11:42,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:11:42,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:11:42,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:11:42,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:11:42,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:11:42,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:11:42,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:11:42,634 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:11:42,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:11:42,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:11:42,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:11:42,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:11:42,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:11:42,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:11:42,635 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:11:42,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:11:42,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:11:42,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:11:42,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:11:42,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:11:42,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:11:42,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:11:42,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:11:42,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:11:42,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:11:42,637 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:11:42,637 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:11:42,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:11:42,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:11:42,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:11:42,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:11:42,872 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:11:42,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c [2021-05-02 18:11:42,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75a6452a4/59b88bdad58c4883879f8937b95af898/FLAG34dd1dabb [2021-05-02 18:11:43,336 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:11:43,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c [2021-05-02 18:11:43,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75a6452a4/59b88bdad58c4883879f8937b95af898/FLAG34dd1dabb [2021-05-02 18:11:43,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75a6452a4/59b88bdad58c4883879f8937b95af898 [2021-05-02 18:11:43,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:11:43,673 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:11:43,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:11:43,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:11:43,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:11:43,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:11:43" (1/1) ... [2021-05-02 18:11:43,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a14c2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:43, skipping insertion in model container [2021-05-02 18:11:43,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:11:43" (1/1) ... [2021-05-02 18:11:43,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:11:43,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:11:43,812 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-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2021-05-02 18:11:43,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:11:43,823 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:11:43,849 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-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2021-05-02 18:11:43,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:11:43,899 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:11:43,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:43 WrapperNode [2021-05-02 18:11:43,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:11:43,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:11:43,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:11:43,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:11:43,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:43" (1/1) ... [2021-05-02 18:11:43,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:43" (1/1) ... [2021-05-02 18:11:43,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:43" (1/1) ... [2021-05-02 18:11:43,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:43" (1/1) ... [2021-05-02 18:11:43,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:43" (1/1) ... [2021-05-02 18:11:43,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:43" (1/1) ... [2021-05-02 18:11:43,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:43" (1/1) ... [2021-05-02 18:11:43,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:11:43,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:11:43,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:11:43,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:11:43,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:43" (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 18:11:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:11:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:11:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:11:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:11:44,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:11:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:11:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:11:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:11:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:11:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:11:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:11:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:11:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:11:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:11:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:11:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:11:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:11:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:11:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:11:44,276 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:11:44,276 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-02 18:11:44,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:11:44 BoogieIcfgContainer [2021-05-02 18:11:44,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:11:44,277 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:11:44,277 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:11:44,278 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:11:44,279 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:11:44" (1/1) ... [2021-05-02 18:11:44,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:11:44 BasicIcfg [2021-05-02 18:11:44,300 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:11:44,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:11:44,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:11:44,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:11:44,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:11:43" (1/4) ... [2021-05-02 18:11:44,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0c05b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:11:44, skipping insertion in model container [2021-05-02 18:11:44,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:43" (2/4) ... [2021-05-02 18:11:44,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0c05b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:11:44, skipping insertion in model container [2021-05-02 18:11:44,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:11:44" (3/4) ... [2021-05-02 18:11:44,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0c05b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:11:44, skipping insertion in model container [2021-05-02 18:11:44,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:11:44" (4/4) ... [2021-05-02 18:11:44,304 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+lhb-reducer.cJordan [2021-05-02 18:11:44,307 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:11:44,309 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:11:44,336 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:11:44,369 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:11:44,369 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:11:44,369 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:11:44,369 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:11:44,369 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:11:44,369 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:11:44,369 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:11:44,369 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:11:44,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 18:11:44,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 18:11:44,390 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:44,391 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:44,391 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:44,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:44,397 INFO L82 PathProgramCache]: Analyzing trace with hash 538022728, now seen corresponding path program 1 times [2021-05-02 18:11:44,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:44,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800052505] [2021-05-02 18:11:44,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:44,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:44,565 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 18:11:44,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:44,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800052505] [2021-05-02 18:11:44,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800052505] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:11:44,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:11:44,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:11:44,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750308545] [2021-05-02 18:11:44,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:11:44,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:44,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:11:44,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:11:44,580 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:44,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:44,743 INFO L93 Difference]: Finished difference Result 53 states and 80 transitions. [2021-05-02 18:11:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:11:44,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-05-02 18:11:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:44,749 INFO L225 Difference]: With dead ends: 53 [2021-05-02 18:11:44,749 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 18:11:44,750 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:11:44,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 18:11:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2021-05-02 18:11:44,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:44,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2021-05-02 18:11:44,769 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 27 [2021-05-02 18:11:44,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:44,769 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2021-05-02 18:11:44,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:44,769 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2021-05-02 18:11:44,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 18:11:44,770 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:44,770 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:44,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:11:44,770 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:44,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:44,771 INFO L82 PathProgramCache]: Analyzing trace with hash 538052519, now seen corresponding path program 1 times [2021-05-02 18:11:44,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:44,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660685121] [2021-05-02 18:11:44,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:44,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:44,914 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 18:11:44,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:44,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660685121] [2021-05-02 18:11:44,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660685121] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:11:44,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:11:44,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-02 18:11:44,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789423326] [2021-05-02 18:11:44,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 18:11:44,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:44,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 18:11:44,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-05-02 18:11:44,916 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:45,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:45,273 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-05-02 18:11:45,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 18:11:45,274 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-05-02 18:11:45,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:45,275 INFO L225 Difference]: With dead ends: 30 [2021-05-02 18:11:45,275 INFO L226 Difference]: Without dead ends: 30 [2021-05-02 18:11:45,277 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 322.9ms TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2021-05-02 18:11:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-02 18:11:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-02 18:11:45,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:45,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-05-02 18:11:45,283 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2021-05-02 18:11:45,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:45,284 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-05-02 18:11:45,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:45,284 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-05-02 18:11:45,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 18:11:45,285 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:45,286 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:45,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:11:45,286 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:45,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:45,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1642813573, now seen corresponding path program 1 times [2021-05-02 18:11:45,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:45,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538785913] [2021-05-02 18:11:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:45,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:11:45,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:45,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538785913] [2021-05-02 18:11:45,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538785913] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:11:45,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:11:45,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-02 18:11:45,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269161126] [2021-05-02 18:11:45,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 18:11:45,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:45,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 18:11:45,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-05-02 18:11:45,435 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:45,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:45,796 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-05-02 18:11:45,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 18:11:45,797 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-05-02 18:11:45,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:45,799 INFO L225 Difference]: With dead ends: 32 [2021-05-02 18:11:45,799 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 18:11:45,799 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 312.7ms TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2021-05-02 18:11:45,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 18:11:45,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 18:11:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:45,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-05-02 18:11:45,803 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29 [2021-05-02 18:11:45,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:45,804 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-05-02 18:11:45,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:45,804 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-05-02 18:11:45,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 18:11:45,805 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:45,805 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:45,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 18:11:45,805 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:45,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:45,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1833702941, now seen corresponding path program 1 times [2021-05-02 18:11:45,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:45,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832294441] [2021-05-02 18:11:45,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:45,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:45,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:11:45,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:45,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832294441] [2021-05-02 18:11:45,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832294441] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:45,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734504778] [2021-05-02 18:11:45,993 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 18:11:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:46,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:11:46,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:11:46,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:11:46,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734504778] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:46,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:11:46,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2021-05-02 18:11:46,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392365553] [2021-05-02 18:11:46,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 18:11:46,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:46,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 18:11:46,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-02 18:11:46,233 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 1 states have call successors, (3), 2 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 18:11:46,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:46,605 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-05-02 18:11:46,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 18:11:46,606 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 1 states have call successors, (3), 2 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 31 [2021-05-02 18:11:46,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:46,608 INFO L225 Difference]: With dead ends: 34 [2021-05-02 18:11:46,608 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 18:11:46,612 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 374.2ms TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2021-05-02 18:11:46,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 18:11:46,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-05-02 18:11:46,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:46,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-05-02 18:11:46,616 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 31 [2021-05-02 18:11:46,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:46,616 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-05-02 18:11:46,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 1 states have call successors, (3), 2 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 18:11:46,616 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-05-02 18:11:46,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 18:11:46,617 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:46,617 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:46,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:11:46,832 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:46,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:46,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1281516607, now seen corresponding path program 2 times [2021-05-02 18:11:46,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:46,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909864365] [2021-05-02 18:11:46,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:46,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:46,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:11:46,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:46,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909864365] [2021-05-02 18:11:46,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909864365] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:46,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870861239] [2021-05-02 18:11:46,961 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 18:11:47,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:11:47,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:11:47,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:11:47,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:11:47,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:11:47,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870861239] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:47,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:11:47,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 18:11:47,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451364883] [2021-05-02 18:11:47,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 18:11:47,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:47,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 18:11:47,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:11:47,120 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (3), 2 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 18:11:47,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:47,502 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-05-02 18:11:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 18:11:47,503 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (3), 2 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 33 [2021-05-02 18:11:47,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:47,503 INFO L225 Difference]: With dead ends: 36 [2021-05-02 18:11:47,503 INFO L226 Difference]: Without dead ends: 36 [2021-05-02 18:11:47,503 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 383.6ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:11:47,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-02 18:11:47,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-05-02 18:11:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:47,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-05-02 18:11:47,505 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 33 [2021-05-02 18:11:47,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:47,506 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-05-02 18:11:47,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (3), 2 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 18:11:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-05-02 18:11:47,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 18:11:47,506 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:47,506 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:47,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:11:47,719 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:47,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:47,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1088572959, now seen corresponding path program 3 times [2021-05-02 18:11:47,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:47,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902414050] [2021-05-02 18:11:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:47,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:11:47,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:47,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902414050] [2021-05-02 18:11:47,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902414050] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:47,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563073377] [2021-05-02 18:11:47,842 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 18:11:47,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 18:11:47,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:11:47,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:11:47,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:11:47,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:47,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:48,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:48,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 18:11:48,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563073377] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:48,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:11:48,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 4] total 18 [2021-05-02 18:11:48,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938719579] [2021-05-02 18:11:48,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 18:11:48,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:48,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 18:11:48,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:11:48,041 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 1 states have call successors, (3), 2 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 18:11:48,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:48,597 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2021-05-02 18:11:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 18:11:48,598 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 1 states have call successors, (3), 2 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 35 [2021-05-02 18:11:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:48,599 INFO L225 Difference]: With dead ends: 41 [2021-05-02 18:11:48,599 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 18:11:48,599 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 503.8ms TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 18:11:48,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 18:11:48,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-05-02 18:11:48,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:48,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-05-02 18:11:48,601 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 35 [2021-05-02 18:11:48,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:48,601 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-05-02 18:11:48,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 1 states have call successors, (3), 2 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 18:11:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-05-02 18:11:48,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 18:11:48,602 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:48,602 INFO L523 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:48,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:11:48,813 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:48,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:48,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1371468550, now seen corresponding path program 4 times [2021-05-02 18:11:48,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:48,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767644419] [2021-05-02 18:11:48,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:48,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:11:48,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:48,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767644419] [2021-05-02 18:11:48,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767644419] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:48,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326707487] [2021-05-02 18:11:48,968 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 18:11:49,003 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:11:49,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:11:49,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:11:49,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:11:49,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:11:49,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326707487] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:49,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:11:49,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-02 18:11:49,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796788688] [2021-05-02 18:11:49,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 18:11:49,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:49,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 18:11:49,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:11:49,114 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (3), 2 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 18:11:49,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:49,497 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-05-02 18:11:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 18:11:49,497 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (3), 2 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 39 [2021-05-02 18:11:49,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:49,498 INFO L225 Difference]: With dead ends: 42 [2021-05-02 18:11:49,498 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 18:11:49,498 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 396.7ms TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2021-05-02 18:11:49,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 18:11:49,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-02 18:11:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:49,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2021-05-02 18:11:49,500 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 39 [2021-05-02 18:11:49,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:49,501 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2021-05-02 18:11:49,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (3), 2 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 18:11:49,501 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2021-05-02 18:11:49,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 18:11:49,501 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:49,501 INFO L523 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:49,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:11:49,716 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:49,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:49,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1170079528, now seen corresponding path program 5 times [2021-05-02 18:11:49,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:49,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993617789] [2021-05-02 18:11:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:49,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:11:49,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:49,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993617789] [2021-05-02 18:11:49,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993617789] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:49,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110549889] [2021-05-02 18:11:49,837 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 18:11:49,900 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-05-02 18:11:49,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:11:49,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 18:11:49,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:11:49,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:49,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 18:11:50,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110549889] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:50,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:11:50,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 6] total 22 [2021-05-02 18:11:50,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91312928] [2021-05-02 18:11:50,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 18:11:50,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:50,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 18:11:50,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 18:11:50,008 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 21 states have internal predecessors, (68), 1 states have call successors, (3), 2 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 18:11:50,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:50,599 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2021-05-02 18:11:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 18:11:50,600 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 21 states have internal predecessors, (68), 1 states have call successors, (3), 2 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 41 [2021-05-02 18:11:50,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:50,600 INFO L225 Difference]: With dead ends: 49 [2021-05-02 18:11:50,600 INFO L226 Difference]: Without dead ends: 49 [2021-05-02 18:11:50,601 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 627.1ms TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 18:11:50,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-02 18:11:50,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2021-05-02 18:11:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:50,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-05-02 18:11:50,603 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 41 [2021-05-02 18:11:50,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:50,603 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-05-02 18:11:50,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 21 states have internal predecessors, (68), 1 states have call successors, (3), 2 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 18:11:50,604 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-05-02 18:11:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 18:11:50,604 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:50,604 INFO L523 BasicCegarLoop]: trace histogram [10, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:50,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:11:50,813 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:50,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:50,813 INFO L82 PathProgramCache]: Analyzing trace with hash 342752624, now seen corresponding path program 6 times [2021-05-02 18:11:50,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:50,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977866469] [2021-05-02 18:11:50,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:50,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 49 proven. 42 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:11:50,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:50,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977866469] [2021-05-02 18:11:50,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977866469] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:50,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190685549] [2021-05-02 18:11:50,961 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 18:11:51,000 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-05-02 18:11:51,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:11:51,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 18:11:51,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:11:51,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 49 proven. 42 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:11:51,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190685549] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:51,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:11:51,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20 [2021-05-02 18:11:51,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300730286] [2021-05-02 18:11:51,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 18:11:51,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:51,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 18:11:51,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-05-02 18:11:51,089 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 20 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 1 states have call successors, (3), 2 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 18:11:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:51,588 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-05-02 18:11:51,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 18:11:51,589 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 1 states have call successors, (3), 2 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 47 [2021-05-02 18:11:51,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:51,589 INFO L225 Difference]: With dead ends: 50 [2021-05-02 18:11:51,589 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 18:11:51,590 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 528.5ms TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 18:11:51,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 18:11:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-05-02 18:11:51,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-05-02 18:11:51,592 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 47 [2021-05-02 18:11:51,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:51,592 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-05-02 18:11:51,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 1 states have call successors, (3), 2 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 18:11:51,592 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-05-02 18:11:51,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 18:11:51,593 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:51,593 INFO L523 BasicCegarLoop]: trace histogram [11, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:51,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:11:51,808 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:51,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:51,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1457245362, now seen corresponding path program 7 times [2021-05-02 18:11:51,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:51,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096681601] [2021-05-02 18:11:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:51,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:11:51,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:51,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096681601] [2021-05-02 18:11:51,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096681601] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:51,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401355446] [2021-05-02 18:11:51,970 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 18:11:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:52,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:11:52,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:11:52,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:11:52,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401355446] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:52,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:11:52,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2021-05-02 18:11:52,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604509874] [2021-05-02 18:11:52,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 18:11:52,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:52,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 18:11:52,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-02 18:11:52,129 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 1 states have call successors, (3), 2 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 18:11:52,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:52,650 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-05-02 18:11:52,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 18:11:52,651 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 1 states have call successors, (3), 2 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 49 [2021-05-02 18:11:52,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:52,651 INFO L225 Difference]: With dead ends: 52 [2021-05-02 18:11:52,651 INFO L226 Difference]: Without dead ends: 52 [2021-05-02 18:11:52,652 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 551.2ms TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 18:11:52,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-02 18:11:52,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-05-02 18:11:52,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:52,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-05-02 18:11:52,654 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 49 [2021-05-02 18:11:52,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:52,654 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-05-02 18:11:52,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 1 states have call successors, (3), 2 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 18:11:52,655 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-05-02 18:11:52,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 18:11:52,655 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:52,655 INFO L523 BasicCegarLoop]: trace histogram [12, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:52,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 18:11:52,865 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:52,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:52,865 INFO L82 PathProgramCache]: Analyzing trace with hash -383489620, now seen corresponding path program 8 times [2021-05-02 18:11:52,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:52,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893161277] [2021-05-02 18:11:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:53,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 63 proven. 72 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:11:53,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:53,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893161277] [2021-05-02 18:11:53,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893161277] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:53,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582407746] [2021-05-02 18:11:53,033 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 18:11:53,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:11:53,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:11:53,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 18:11:53,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:11:53,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 75 proven. 49 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-02 18:11:53,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582407746] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:53,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:11:53,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10] total 29 [2021-05-02 18:11:53,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84157712] [2021-05-02 18:11:53,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 18:11:53,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:53,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 18:11:53,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2021-05-02 18:11:53,300 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 28 states have internal predecessors, (82), 1 states have call successors, (3), 2 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 18:11:54,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:54,148 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2021-05-02 18:11:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 18:11:54,149 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 28 states have internal predecessors, (82), 1 states have call successors, (3), 2 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 51 [2021-05-02 18:11:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:54,149 INFO L225 Difference]: With dead ends: 63 [2021-05-02 18:11:54,149 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 18:11:54,150 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 982.4ms TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:11:54,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 18:11:54,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-05-02 18:11:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 58 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2021-05-02 18:11:54,152 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 51 [2021-05-02 18:11:54,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:54,152 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2021-05-02 18:11:54,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 28 states have internal predecessors, (82), 1 states have call successors, (3), 2 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 18:11:54,152 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2021-05-02 18:11:54,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 18:11:54,154 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:54,154 INFO L523 BasicCegarLoop]: trace histogram [17, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:54,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-05-02 18:11:54,365 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:54,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:54,365 INFO L82 PathProgramCache]: Analyzing trace with hash 2131251198, now seen corresponding path program 9 times [2021-05-02 18:11:54,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:54,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645162853] [2021-05-02 18:11:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:54,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 150 proven. 90 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 18:11:54,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:54,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645162853] [2021-05-02 18:11:54,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645162853] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:54,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922841570] [2021-05-02 18:11:54,551 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 18:11:54,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-05-02 18:11:54,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:11:54,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:11:54,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:11:54,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:11:54,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922841570] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:54,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:11:54,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 29] total 31 [2021-05-02 18:11:54,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860301612] [2021-05-02 18:11:54,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 18:11:54,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:54,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 18:11:54,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:11:54,861 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 1 states have call successors, (3), 2 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 18:11:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:55,803 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-05-02 18:11:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 18:11:55,804 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 1 states have call successors, (3), 2 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 61 [2021-05-02 18:11:55,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:55,804 INFO L225 Difference]: With dead ends: 80 [2021-05-02 18:11:55,804 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 18:11:55,805 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1098.0ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:11:55,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 18:11:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-02 18:11:55,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 1.118421052631579) internal successors, (85), 76 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-05-02 18:11:55,807 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 61 [2021-05-02 18:11:55,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:55,808 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-05-02 18:11:55,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 1 states have call successors, (3), 2 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 18:11:55,808 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-05-02 18:11:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 18:11:55,808 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:55,808 INFO L523 BasicCegarLoop]: trace histogram [26, 18, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:56,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:11:56,017 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:56,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:56,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1557215668, now seen corresponding path program 10 times [2021-05-02 18:11:56,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:56,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727166763] [2021-05-02 18:11:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:56,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 285 proven. 342 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 18:11:56,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:56,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727166763] [2021-05-02 18:11:56,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727166763] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:56,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720143901] [2021-05-02 18:11:56,360 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 18:11:56,403 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:11:56,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:11:56,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 18:11:56,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:11:56,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 285 proven. 342 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 18:11:56,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720143901] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:56,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:11:56,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 32 [2021-05-02 18:11:56,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165408691] [2021-05-02 18:11:56,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 18:11:56,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:56,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 18:11:56,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2021-05-02 18:11:56,544 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 32 states, 32 states have (on average 2.125) internal successors, (68), 31 states have internal predecessors, (68), 1 states have call successors, (3), 2 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 18:11:57,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:57,468 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2021-05-02 18:11:57,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 18:11:57,468 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 31 states have internal predecessors, (68), 1 states have call successors, (3), 2 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 79 [2021-05-02 18:11:57,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:57,469 INFO L225 Difference]: With dead ends: 82 [2021-05-02 18:11:57,469 INFO L226 Difference]: Without dead ends: 82 [2021-05-02 18:11:57,469 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 1069.9ms TimeCoverageRelationStatistics Valid=1336, Invalid=2204, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 18:11:57,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-02 18:11:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-05-02 18:11:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 78 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:57,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-05-02 18:11:57,472 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 79 [2021-05-02 18:11:57,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:57,472 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-05-02 18:11:57,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 31 states have internal predecessors, (68), 1 states have call successors, (3), 2 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 18:11:57,472 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-05-02 18:11:57,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 18:11:57,474 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:57,474 INFO L523 BasicCegarLoop]: trace histogram [27, 19, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:57,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:11:57,685 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:57,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:57,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1427766230, now seen corresponding path program 11 times [2021-05-02 18:11:57,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:57,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750351165] [2021-05-02 18:11:57,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:58,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 300 proven. 380 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 18:11:58,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:58,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750351165] [2021-05-02 18:11:58,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750351165] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:58,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12479880] [2021-05-02 18:11:58,041 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 18:11:58,085 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2021-05-02 18:11:58,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:11:58,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:11:58,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:11:58,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 378 proven. 169 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-05-02 18:11:58,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12479880] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:58,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:11:58,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 16] total 46 [2021-05-02 18:11:58,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207911991] [2021-05-02 18:11:58,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 18:11:58,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:58,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 18:11:58,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:11:58,540 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 46 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 45 states have internal predecessors, (116), 1 states have call successors, (3), 2 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 18:12:00,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:00,238 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2021-05-02 18:12:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 18:12:00,238 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 45 states have internal predecessors, (116), 1 states have call successors, (3), 2 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 81 [2021-05-02 18:12:00,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:00,238 INFO L225 Difference]: With dead ends: 97 [2021-05-02 18:12:00,239 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 18:12:00,240 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 2157.6ms TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 18:12:00,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 18:12:00,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2021-05-02 18:12:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 92 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2021-05-02 18:12:00,242 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 81 [2021-05-02 18:12:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:00,242 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2021-05-02 18:12:00,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 45 states have internal predecessors, (116), 1 states have call successors, (3), 2 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 18:12:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2021-05-02 18:12:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 18:12:00,243 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:00,243 INFO L523 BasicCegarLoop]: trace histogram [34, 20, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:00,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 18:12:00,453 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:00,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:00,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1285428938, now seen corresponding path program 12 times [2021-05-02 18:12:00,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:00,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355945689] [2021-05-02 18:12:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:00,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 567 proven. 420 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:12:00,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:00,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355945689] [2021-05-02 18:12:00,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355945689] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:00,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500122530] [2021-05-02 18:12:00,798 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 18:12:00,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2021-05-02 18:12:00,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:00,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:12:00,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:00,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:00,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:01,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:01,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:01,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:01,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:01,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:01,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:01,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 567 proven. 420 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:12:01,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500122530] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:01,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:01,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 18:12:01,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631746671] [2021-05-02 18:12:01,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 18:12:01,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:01,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 18:12:01,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:12:01,050 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 33 states have internal predecessors, (72), 1 states have call successors, (3), 2 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 18:12:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:02,142 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2021-05-02 18:12:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 18:12:02,142 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 33 states have internal predecessors, (72), 1 states have call successors, (3), 2 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 95 [2021-05-02 18:12:02,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:02,143 INFO L225 Difference]: With dead ends: 98 [2021-05-02 18:12:02,143 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 18:12:02,144 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1205.8ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:12:02,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 18:12:02,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-02 18:12:02,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 94 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:02,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2021-05-02 18:12:02,146 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 95 [2021-05-02 18:12:02,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:02,146 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2021-05-02 18:12:02,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 33 states have internal predecessors, (72), 1 states have call successors, (3), 2 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 18:12:02,146 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2021-05-02 18:12:02,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 18:12:02,147 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:02,147 INFO L523 BasicCegarLoop]: trace histogram [35, 21, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:02,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 18:12:02,361 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:02,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:02,361 INFO L82 PathProgramCache]: Analyzing trace with hash -632444140, now seen corresponding path program 13 times [2021-05-02 18:12:02,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:02,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616132] [2021-05-02 18:12:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:02,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 594 proven. 462 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:12:02,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:02,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616132] [2021-05-02 18:12:02,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616132] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:02,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702316399] [2021-05-02 18:12:02,768 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 18:12:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:02,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 18:12:02,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:02,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 594 proven. 462 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:12:02,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702316399] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:02,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:02,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 35 [2021-05-02 18:12:02,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24280320] [2021-05-02 18:12:02,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 18:12:02,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:02,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 18:12:02,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:12:02,991 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 34 states have internal predecessors, (74), 1 states have call successors, (3), 2 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 18:12:04,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:04,065 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2021-05-02 18:12:04,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 18:12:04,065 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 34 states have internal predecessors, (74), 1 states have call successors, (3), 2 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 97 [2021-05-02 18:12:04,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:04,066 INFO L225 Difference]: With dead ends: 100 [2021-05-02 18:12:04,066 INFO L226 Difference]: Without dead ends: 100 [2021-05-02 18:12:04,067 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 1305.6ms TimeCoverageRelationStatistics Valid=1618, Invalid=2672, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 18:12:04,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-05-02 18:12:04,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-05-02 18:12:04,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 96 states have (on average 1.15625) internal successors, (111), 96 states have internal predecessors, (111), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2021-05-02 18:12:04,070 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 97 [2021-05-02 18:12:04,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:04,071 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2021-05-02 18:12:04,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 34 states have internal predecessors, (74), 1 states have call successors, (3), 2 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 18:12:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2021-05-02 18:12:04,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-02 18:12:04,071 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:04,071 INFO L523 BasicCegarLoop]: trace histogram [36, 22, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:04,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 18:12:04,281 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:04,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:04,281 INFO L82 PathProgramCache]: Analyzing trace with hash -179278478, now seen corresponding path program 14 times [2021-05-02 18:12:04,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:04,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507757740] [2021-05-02 18:12:04,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:04,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 621 proven. 506 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:12:04,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:04,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507757740] [2021-05-02 18:12:04,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507757740] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:04,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761511661] [2021-05-02 18:12:04,707 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 18:12:04,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:12:04,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:04,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 18:12:04,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:04,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 621 proven. 506 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:12:04,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761511661] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:04,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:04,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-02 18:12:04,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808188764] [2021-05-02 18:12:04,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 18:12:04,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:04,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 18:12:04,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 18:12:04,914 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 35 states have internal predecessors, (76), 1 states have call successors, (3), 2 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 18:12:06,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:06,040 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2021-05-02 18:12:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 18:12:06,041 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 35 states have internal predecessors, (76), 1 states have call successors, (3), 2 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 99 [2021-05-02 18:12:06,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:06,041 INFO L225 Difference]: With dead ends: 102 [2021-05-02 18:12:06,041 INFO L226 Difference]: Without dead ends: 102 [2021-05-02 18:12:06,042 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1351.1ms TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 18:12:06,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-05-02 18:12:06,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-05-02 18:12:06,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 1.153061224489796) internal successors, (113), 98 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:06,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2021-05-02 18:12:06,044 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 99 [2021-05-02 18:12:06,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:06,044 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2021-05-02 18:12:06,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 35 states have internal predecessors, (76), 1 states have call successors, (3), 2 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 18:12:06,044 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2021-05-02 18:12:06,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 18:12:06,045 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:06,045 INFO L523 BasicCegarLoop]: trace histogram [37, 23, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:06,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:12:06,253 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:06,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:06,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1521225808, now seen corresponding path program 15 times [2021-05-02 18:12:06,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:06,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701583074] [2021-05-02 18:12:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:06,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 648 proven. 552 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:12:06,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:06,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701583074] [2021-05-02 18:12:06,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701583074] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:06,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122960911] [2021-05-02 18:12:06,694 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 18:12:06,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-05-02 18:12:06,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:06,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 18:12:06,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:06,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:06,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:06,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:06,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:06,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:06,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:06,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:06,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:06,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:06,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:06,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:06,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 667 proven. 196 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-05-02 18:12:07,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122960911] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:07,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:07,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 17] total 51 [2021-05-02 18:12:07,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047595369] [2021-05-02 18:12:07,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 18:12:07,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:07,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 18:12:07,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:12:07,327 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand has 51 states, 51 states have (on average 2.4705882352941178) internal successors, (126), 50 states have internal predecessors, (126), 1 states have call successors, (3), 2 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 18:12:08,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:08,952 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2021-05-02 18:12:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:12:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.4705882352941178) internal successors, (126), 50 states have internal predecessors, (126), 1 states have call successors, (3), 2 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 101 [2021-05-02 18:12:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:08,953 INFO L225 Difference]: With dead ends: 107 [2021-05-02 18:12:08,953 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 18:12:08,956 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 2268.1ms TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:12:08,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 18:12:08,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2021-05-02 18:12:08,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 102 states have (on average 1.1568627450980393) internal successors, (118), 102 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:08,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2021-05-02 18:12:08,962 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 101 [2021-05-02 18:12:08,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:08,964 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2021-05-02 18:12:08,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.4705882352941178) internal successors, (126), 50 states have internal predecessors, (126), 1 states have call successors, (3), 2 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 18:12:08,965 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2021-05-02 18:12:08,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 18:12:08,981 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:08,981 INFO L523 BasicCegarLoop]: trace histogram [39, 24, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:09,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 18:12:09,182 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:09,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:09,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1764903061, now seen corresponding path program 16 times [2021-05-02 18:12:09,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:09,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244213995] [2021-05-02 18:12:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:09,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 725 proven. 600 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 18:12:09,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:09,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244213995] [2021-05-02 18:12:09,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244213995] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:09,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680817002] [2021-05-02 18:12:09,598 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 18:12:09,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:12:09,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:09,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 18:12:09,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:09,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 725 proven. 600 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 18:12:09,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680817002] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:09,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:09,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 38 [2021-05-02 18:12:09,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423703226] [2021-05-02 18:12:09,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 18:12:09,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:09,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 18:12:09,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 18:12:09,771 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 1 states have call successors, (3), 2 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 18:12:11,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:11,005 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2021-05-02 18:12:11,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 18:12:11,006 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 1 states have call successors, (3), 2 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 105 [2021-05-02 18:12:11,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:11,006 INFO L225 Difference]: With dead ends: 108 [2021-05-02 18:12:11,006 INFO L226 Difference]: Without dead ends: 108 [2021-05-02 18:12:11,007 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1435.2ms TimeCoverageRelationStatistics Valid=1927, Invalid=3185, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 18:12:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-05-02 18:12:11,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-05-02 18:12:11,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 104 states have (on average 1.1538461538461537) internal successors, (120), 104 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2021-05-02 18:12:11,009 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 105 [2021-05-02 18:12:11,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:11,009 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2021-05-02 18:12:11,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 1 states have call successors, (3), 2 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 18:12:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2021-05-02 18:12:11,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 18:12:11,009 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:11,010 INFO L523 BasicCegarLoop]: trace histogram [40, 25, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:11,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:12:11,216 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:11,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:11,216 INFO L82 PathProgramCache]: Analyzing trace with hash -586204215, now seen corresponding path program 17 times [2021-05-02 18:12:11,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:11,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244639693] [2021-05-02 18:12:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:11,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 754 proven. 650 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 18:12:11,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:11,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244639693] [2021-05-02 18:12:11,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244639693] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:11,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186755774] [2021-05-02 18:12:11,714 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 18:12:11,771 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2021-05-02 18:12:11,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:11,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:12:11,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:11,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:11,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:11,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:11,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:11,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:11,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:11,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:11,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:11,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:11,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:11,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:11,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:12,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 819 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2021-05-02 18:12:12,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186755774] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:12,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:12,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 22] total 58 [2021-05-02 18:12:12,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959013767] [2021-05-02 18:12:12,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 18:12:12,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:12,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 18:12:12,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:12:12,541 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 58 states, 58 states have (on average 2.413793103448276) internal successors, (140), 57 states have internal predecessors, (140), 1 states have call successors, (3), 2 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 18:12:14,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:14,958 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2021-05-02 18:12:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 18:12:14,958 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.413793103448276) internal successors, (140), 57 states have internal predecessors, (140), 1 states have call successors, (3), 2 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 107 [2021-05-02 18:12:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:14,959 INFO L225 Difference]: With dead ends: 121 [2021-05-02 18:12:14,959 INFO L226 Difference]: Without dead ends: 121 [2021-05-02 18:12:14,960 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 3241.4ms TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2021-05-02 18:12:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-05-02 18:12:14,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2021-05-02 18:12:14,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.1810344827586208) internal successors, (137), 116 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:14,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2021-05-02 18:12:14,962 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 107 [2021-05-02 18:12:14,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:14,962 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2021-05-02 18:12:14,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.413793103448276) internal successors, (140), 57 states have internal predecessors, (140), 1 states have call successors, (3), 2 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 18:12:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2021-05-02 18:12:14,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 18:12:14,964 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:14,964 INFO L523 BasicCegarLoop]: trace histogram [46, 26, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:15,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:12:15,173 INFO L428 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:15,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:15,173 INFO L82 PathProgramCache]: Analyzing trace with hash -2032754792, now seen corresponding path program 18 times [2021-05-02 18:12:15,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:15,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618283181] [2021-05-02 18:12:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:15,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 1053 proven. 702 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:12:15,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:15,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618283181] [2021-05-02 18:12:15,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618283181] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:15,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940081235] [2021-05-02 18:12:15,697 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 18:12:15,785 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2021-05-02 18:12:15,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:15,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 18:12:15,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:15,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:15,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 1053 proven. 702 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:12:16,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940081235] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:16,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:16,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 18:12:16,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682128387] [2021-05-02 18:12:16,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 18:12:16,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:16,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 18:12:16,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:12:16,023 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand has 40 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 1 states have call successors, (3), 2 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 18:12:17,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:17,428 INFO L93 Difference]: Finished difference Result 122 states and 142 transitions. [2021-05-02 18:12:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:12:17,429 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 1 states have call successors, (3), 2 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 119 [2021-05-02 18:12:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:17,429 INFO L225 Difference]: With dead ends: 122 [2021-05-02 18:12:17,429 INFO L226 Difference]: Without dead ends: 122 [2021-05-02 18:12:17,430 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1657.8ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:12:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-02 18:12:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-05-02 18:12:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 118 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2021-05-02 18:12:17,432 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 119 [2021-05-02 18:12:17,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:17,432 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2021-05-02 18:12:17,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 1 states have call successors, (3), 2 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 18:12:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2021-05-02 18:12:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 18:12:17,433 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:17,433 INFO L523 BasicCegarLoop]: trace histogram [47, 27, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:17,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 18:12:17,641 INFO L428 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:17,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:17,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1756505974, now seen corresponding path program 19 times [2021-05-02 18:12:17,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:17,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068182407] [2021-05-02 18:12:17,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:18,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 1092 proven. 756 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:12:18,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:18,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068182407] [2021-05-02 18:12:18,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068182407] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:18,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517499562] [2021-05-02 18:12:18,354 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 18:12:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:18,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 18:12:18,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:18,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 1092 proven. 756 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:12:18,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517499562] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:18,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:18,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 41 [2021-05-02 18:12:18,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879953642] [2021-05-02 18:12:18,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 18:12:18,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:18,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 18:12:18,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 18:12:18,560 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 40 states have internal predecessors, (86), 1 states have call successors, (3), 2 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 18:12:19,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:19,761 INFO L93 Difference]: Finished difference Result 124 states and 144 transitions. [2021-05-02 18:12:19,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 18:12:19,761 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 40 states have internal predecessors, (86), 1 states have call successors, (3), 2 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 121 [2021-05-02 18:12:19,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:19,763 INFO L225 Difference]: With dead ends: 124 [2021-05-02 18:12:19,763 INFO L226 Difference]: Without dead ends: 124 [2021-05-02 18:12:19,763 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1686.5ms TimeCoverageRelationStatistics Valid=2263, Invalid=3743, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 18:12:19,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-05-02 18:12:19,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-05-02 18:12:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 120 states have (on average 1.175) internal successors, (141), 120 states have internal predecessors, (141), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2021-05-02 18:12:19,765 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 121 [2021-05-02 18:12:19,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:19,765 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2021-05-02 18:12:19,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 40 states have internal predecessors, (86), 1 states have call successors, (3), 2 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 18:12:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2021-05-02 18:12:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-02 18:12:19,766 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:19,766 INFO L523 BasicCegarLoop]: trace histogram [48, 28, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:19,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:12:19,981 INFO L428 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:19,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:19,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1103835092, now seen corresponding path program 20 times [2021-05-02 18:12:19,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:19,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999192174] [2021-05-02 18:12:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:20,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 1131 proven. 812 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:12:20,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:20,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999192174] [2021-05-02 18:12:20,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999192174] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:20,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101030063] [2021-05-02 18:12:20,533 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 18:12:20,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:12:20,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:20,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 18:12:20,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:20,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 1131 proven. 812 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:12:20,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101030063] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:20,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:20,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-02 18:12:20,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017734304] [2021-05-02 18:12:20,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 18:12:20,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:20,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 18:12:20,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 18:12:20,727 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 41 states have internal predecessors, (88), 1 states have call successors, (3), 2 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 18:12:22,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:22,173 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2021-05-02 18:12:22,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 18:12:22,174 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 41 states have internal predecessors, (88), 1 states have call successors, (3), 2 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 123 [2021-05-02 18:12:22,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:22,174 INFO L225 Difference]: With dead ends: 126 [2021-05-02 18:12:22,174 INFO L226 Difference]: Without dead ends: 126 [2021-05-02 18:12:22,175 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1779.3ms TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 18:12:22,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-05-02 18:12:22,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-05-02 18:12:22,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 1.1721311475409837) internal successors, (143), 122 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:22,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 146 transitions. [2021-05-02 18:12:22,177 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 146 transitions. Word has length 123 [2021-05-02 18:12:22,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:22,177 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 146 transitions. [2021-05-02 18:12:22,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 41 states have internal predecessors, (88), 1 states have call successors, (3), 2 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 18:12:22,177 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 146 transitions. [2021-05-02 18:12:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 18:12:22,178 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:22,178 INFO L523 BasicCegarLoop]: trace histogram [49, 29, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:22,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 18:12:22,385 INFO L428 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:22,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:22,385 INFO L82 PathProgramCache]: Analyzing trace with hash 952342706, now seen corresponding path program 21 times [2021-05-02 18:12:22,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:22,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905010253] [2021-05-02 18:12:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:22,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 1170 proven. 870 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:12:22,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:22,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905010253] [2021-05-02 18:12:22,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905010253] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:22,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988115017] [2021-05-02 18:12:22,950 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 18:12:23,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-05-02 18:12:23,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:23,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 18:12:23,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:23,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 1189 proven. 400 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2021-05-02 18:12:23,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988115017] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:23,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:23,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 23] total 63 [2021-05-02 18:12:23,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722583300] [2021-05-02 18:12:23,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 18:12:23,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:23,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 18:12:23,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:12:23,831 INFO L87 Difference]: Start difference. First operand 126 states and 146 transitions. Second operand has 63 states, 63 states have (on average 2.380952380952381) internal successors, (150), 62 states have internal predecessors, (150), 1 states have call successors, (3), 2 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 18:12:26,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:26,503 INFO L93 Difference]: Finished difference Result 131 states and 153 transitions. [2021-05-02 18:12:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:12:26,504 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.380952380952381) internal successors, (150), 62 states have internal predecessors, (150), 1 states have call successors, (3), 2 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 125 [2021-05-02 18:12:26,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:26,504 INFO L225 Difference]: With dead ends: 131 [2021-05-02 18:12:26,504 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 18:12:26,505 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1808 ImplicationChecksByTransitivity, 3539.4ms TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2021-05-02 18:12:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 18:12:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2021-05-02 18:12:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 126 states have (on average 1.1746031746031746) internal successors, (148), 126 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:26,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2021-05-02 18:12:26,507 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 125 [2021-05-02 18:12:26,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:26,507 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2021-05-02 18:12:26,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.380952380952381) internal successors, (150), 62 states have internal predecessors, (150), 1 states have call successors, (3), 2 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 18:12:26,507 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2021-05-02 18:12:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 18:12:26,508 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:26,508 INFO L523 BasicCegarLoop]: trace histogram [51, 30, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:26,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 18:12:26,709 INFO L428 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:26,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:26,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1762757299, now seen corresponding path program 22 times [2021-05-02 18:12:26,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:26,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440123614] [2021-05-02 18:12:26,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:27,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 1271 proven. 930 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 18:12:27,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:27,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440123614] [2021-05-02 18:12:27,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440123614] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:27,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549162363] [2021-05-02 18:12:27,317 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 18:12:27,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:12:27,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:27,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 18:12:27,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:27,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 1271 proven. 930 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 18:12:27,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549162363] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:27,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:27,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 44 [2021-05-02 18:12:27,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017647092] [2021-05-02 18:12:27,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 18:12:27,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:27,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 18:12:27,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 18:12:27,542 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 43 states have internal predecessors, (92), 1 states have call successors, (3), 2 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 18:12:29,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:29,073 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2021-05-02 18:12:29,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 18:12:29,074 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 43 states have internal predecessors, (92), 1 states have call successors, (3), 2 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 129 [2021-05-02 18:12:29,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:29,074 INFO L225 Difference]: With dead ends: 132 [2021-05-02 18:12:29,074 INFO L226 Difference]: Without dead ends: 132 [2021-05-02 18:12:29,075 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 1924.9ms TimeCoverageRelationStatistics Valid=2626, Invalid=4346, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 18:12:29,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-05-02 18:12:29,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-05-02 18:12:29,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 128 states have (on average 1.171875) internal successors, (150), 128 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:29,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2021-05-02 18:12:29,076 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 129 [2021-05-02 18:12:29,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:29,077 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2021-05-02 18:12:29,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 43 states have internal predecessors, (92), 1 states have call successors, (3), 2 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 18:12:29,077 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2021-05-02 18:12:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 18:12:29,077 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:29,077 INFO L523 BasicCegarLoop]: trace histogram [52, 31, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:29,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:12:29,285 INFO L428 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:29,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:29,285 INFO L82 PathProgramCache]: Analyzing trace with hash -610254933, now seen corresponding path program 23 times [2021-05-02 18:12:29,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:29,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771577466] [2021-05-02 18:12:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:29,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 1312 proven. 992 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 18:12:29,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:29,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771577466] [2021-05-02 18:12:29,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771577466] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:29,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627794468] [2021-05-02 18:12:29,925 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 18:12:29,992 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 53 check-sat command(s) [2021-05-02 18:12:29,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:29,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 18:12:29,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:30,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:30,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:31,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:31,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:31,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:31,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:31,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:31,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:31,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 1378 proven. 676 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-05-02 18:12:31,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627794468] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:31,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:31,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 29] total 71 [2021-05-02 18:12:31,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566273443] [2021-05-02 18:12:31,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 18:12:31,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:31,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 18:12:31,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 18:12:31,152 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand has 71 states, 71 states have (on average 2.3380281690140845) internal successors, (166), 70 states have internal predecessors, (166), 1 states have call successors, (3), 2 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 18:12:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:34,631 INFO L93 Difference]: Finished difference Result 147 states and 175 transitions. [2021-05-02 18:12:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:12:34,631 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.3380281690140845) internal successors, (166), 70 states have internal predecessors, (166), 1 states have call successors, (3), 2 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 131 [2021-05-02 18:12:34,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:34,632 INFO L225 Difference]: With dead ends: 147 [2021-05-02 18:12:34,632 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 18:12:34,633 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2318 ImplicationChecksByTransitivity, 4721.3ms TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 18:12:34,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 18:12:34,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2021-05-02 18:12:34,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 142 states have (on average 1.1971830985915493) internal successors, (170), 142 states have internal predecessors, (170), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:34,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2021-05-02 18:12:34,635 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 131 [2021-05-02 18:12:34,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:34,635 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2021-05-02 18:12:34,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.3380281690140845) internal successors, (166), 70 states have internal predecessors, (166), 1 states have call successors, (3), 2 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 18:12:34,635 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2021-05-02 18:12:34,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 18:12:34,636 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:34,636 INFO L523 BasicCegarLoop]: trace histogram [59, 32, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:34,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-02 18:12:34,845 INFO L428 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:34,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:34,845 INFO L82 PathProgramCache]: Analyzing trace with hash -353593417, now seen corresponding path program 24 times [2021-05-02 18:12:34,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:34,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590233144] [2021-05-02 18:12:34,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:35,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1749 proven. 1056 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 18:12:35,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:35,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590233144] [2021-05-02 18:12:35,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590233144] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:35,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940759384] [2021-05-02 18:12:35,521 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 18:12:35,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 59 check-sat command(s) [2021-05-02 18:12:35,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:35,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 18:12:35,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:35,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:35,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1770 proven. 841 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-05-02 18:12:36,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940759384] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:36,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:36,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 32] total 75 [2021-05-02 18:12:36,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577903766] [2021-05-02 18:12:36,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:12:36,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:36,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:12:36,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:12:36,974 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand has 75 states, 75 states have (on average 2.32) internal successors, (174), 74 states have internal predecessors, (174), 1 states have call successors, (3), 2 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 18:12:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:40,750 INFO L93 Difference]: Finished difference Result 155 states and 186 transitions. [2021-05-02 18:12:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:12:40,750 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.32) internal successors, (174), 74 states have internal predecessors, (174), 1 states have call successors, (3), 2 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 145 [2021-05-02 18:12:40,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:40,751 INFO L225 Difference]: With dead ends: 155 [2021-05-02 18:12:40,751 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 18:12:40,752 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2597 ImplicationChecksByTransitivity, 5221.1ms TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2021-05-02 18:12:40,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 18:12:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-05-02 18:12:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 150 states have (on average 1.2066666666666668) internal successors, (181), 150 states have internal predecessors, (181), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2021-05-02 18:12:40,754 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 145 [2021-05-02 18:12:40,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:40,754 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2021-05-02 18:12:40,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.32) internal successors, (174), 74 states have internal predecessors, (174), 1 states have call successors, (3), 2 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 18:12:40,754 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2021-05-02 18:12:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 18:12:40,755 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:40,755 INFO L523 BasicCegarLoop]: trace histogram [63, 33, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:40,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:12:40,971 INFO L428 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:40,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:40,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1000597068, now seen corresponding path program 25 times [2021-05-02 18:12:40,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:40,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777254565] [2021-05-02 18:12:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:41,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 2006 proven. 1122 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 18:12:41,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:41,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777254565] [2021-05-02 18:12:41,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777254565] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:41,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843839096] [2021-05-02 18:12:41,676 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 18:12:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:41,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 18:12:41,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:41,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 2006 proven. 1122 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 18:12:41,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843839096] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:41,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:41,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 47 [2021-05-02 18:12:41,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347503528] [2021-05-02 18:12:41,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 18:12:41,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:41,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 18:12:41,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 18:12:41,921 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 states have internal predecessors, (98), 1 states have call successors, (3), 2 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 18:12:43,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:43,638 INFO L93 Difference]: Finished difference Result 156 states and 186 transitions. [2021-05-02 18:12:43,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 18:12:43,638 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 states have internal predecessors, (98), 1 states have call successors, (3), 2 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 153 [2021-05-02 18:12:43,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:43,639 INFO L225 Difference]: With dead ends: 156 [2021-05-02 18:12:43,639 INFO L226 Difference]: Without dead ends: 156 [2021-05-02 18:12:43,639 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 2174.5ms TimeCoverageRelationStatistics Valid=3016, Invalid=4994, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 18:12:43,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-05-02 18:12:43,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-05-02 18:12:43,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 152 states have internal predecessors, (183), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:43,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 186 transitions. [2021-05-02 18:12:43,641 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 186 transitions. Word has length 153 [2021-05-02 18:12:43,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:43,642 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 186 transitions. [2021-05-02 18:12:43,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 states have internal predecessors, (98), 1 states have call successors, (3), 2 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 18:12:43,642 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 186 transitions. [2021-05-02 18:12:43,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 18:12:43,642 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:43,642 INFO L523 BasicCegarLoop]: trace histogram [64, 34, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:43,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 18:12:43,853 INFO L428 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:43,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:43,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1674835626, now seen corresponding path program 26 times [2021-05-02 18:12:43,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:43,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355071715] [2021-05-02 18:12:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:44,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 2065 proven. 1190 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 18:12:44,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:44,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355071715] [2021-05-02 18:12:44,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355071715] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:44,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101028232] [2021-05-02 18:12:44,596 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 18:12:44,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:12:44,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:44,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 18:12:44,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:44,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 2065 proven. 1190 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 18:12:44,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101028232] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:44,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:44,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-02 18:12:44,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722459286] [2021-05-02 18:12:44,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 18:12:44,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:44,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 18:12:44,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 18:12:44,848 INFO L87 Difference]: Start difference. First operand 156 states and 186 transitions. Second operand has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 47 states have internal predecessors, (100), 1 states have call successors, (3), 2 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 18:12:46,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:46,640 INFO L93 Difference]: Finished difference Result 158 states and 188 transitions. [2021-05-02 18:12:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 18:12:46,640 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 47 states have internal predecessors, (100), 1 states have call successors, (3), 2 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 155 [2021-05-02 18:12:46,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:46,641 INFO L225 Difference]: With dead ends: 158 [2021-05-02 18:12:46,641 INFO L226 Difference]: Without dead ends: 158 [2021-05-02 18:12:46,642 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 2284.3ms TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 18:12:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-05-02 18:12:46,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-05-02 18:12:46,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 154 states have (on average 1.2012987012987013) internal successors, (185), 154 states have internal predecessors, (185), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2021-05-02 18:12:46,644 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 155 [2021-05-02 18:12:46,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:46,645 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2021-05-02 18:12:46,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 47 states have internal predecessors, (100), 1 states have call successors, (3), 2 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 18:12:46,645 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2021-05-02 18:12:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 18:12:46,645 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:46,645 INFO L523 BasicCegarLoop]: trace histogram [65, 35, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:46,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 18:12:46,846 INFO L428 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:46,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:46,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1078028168, now seen corresponding path program 27 times [2021-05-02 18:12:46,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:46,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425164258] [2021-05-02 18:12:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:47,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 2124 proven. 1260 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 18:12:47,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:47,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425164258] [2021-05-02 18:12:47,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425164258] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:47,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607480301] [2021-05-02 18:12:47,625 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 18:12:47,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2021-05-02 18:12:47,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:47,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 18:12:47,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:47,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:47,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:47,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:47,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:47,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:47,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:47,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:47,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:47,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:47,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:48,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:49,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:49,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:49,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:49,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:49,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:49,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:49,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:49,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 2135 proven. 900 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2021-05-02 18:12:49,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607480301] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:49,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:49,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 33] total 79 [2021-05-02 18:12:49,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029682193] [2021-05-02 18:12:49,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:12:49,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:49,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:12:49,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:12:49,224 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand has 79 states, 79 states have (on average 2.3037974683544302) internal successors, (182), 78 states have internal predecessors, (182), 1 states have call successors, (3), 2 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 18:12:53,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:53,408 INFO L93 Difference]: Finished difference Result 163 states and 195 transitions. [2021-05-02 18:12:53,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 18:12:53,408 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.3037974683544302) internal successors, (182), 78 states have internal predecessors, (182), 1 states have call successors, (3), 2 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 157 [2021-05-02 18:12:53,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:53,409 INFO L225 Difference]: With dead ends: 163 [2021-05-02 18:12:53,409 INFO L226 Difference]: Without dead ends: 163 [2021-05-02 18:12:53,410 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2894 ImplicationChecksByTransitivity, 5808.1ms TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2021-05-02 18:12:53,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-05-02 18:12:53,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2021-05-02 18:12:53,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 158 states have (on average 1.2025316455696202) internal successors, (190), 158 states have internal predecessors, (190), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 193 transitions. [2021-05-02 18:12:53,412 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 193 transitions. Word has length 157 [2021-05-02 18:12:53,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:53,412 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 193 transitions. [2021-05-02 18:12:53,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.3037974683544302) internal successors, (182), 78 states have internal predecessors, (182), 1 states have call successors, (3), 2 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 18:12:53,412 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 193 transitions. [2021-05-02 18:12:53,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 18:12:53,413 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:53,413 INFO L523 BasicCegarLoop]: trace histogram [67, 36, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:53,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:12:53,628 INFO L428 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:53,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:53,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1239740067, now seen corresponding path program 28 times [2021-05-02 18:12:53,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:53,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433037041] [2021-05-02 18:12:53,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:54,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 2257 proven. 1332 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 18:12:54,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:54,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433037041] [2021-05-02 18:12:54,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433037041] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:54,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329672261] [2021-05-02 18:12:54,428 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 18:12:54,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:12:54,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:54,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-02 18:12:54,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:54,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 2257 proven. 1332 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 18:12:54,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329672261] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:54,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:54,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 50 [2021-05-02 18:12:54,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653377362] [2021-05-02 18:12:54,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 18:12:54,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:54,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 18:12:54,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 18:12:54,681 INFO L87 Difference]: Start difference. First operand 162 states and 193 transitions. Second operand has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 1 states have call successors, (3), 2 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 18:12:56,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:12:56,523 INFO L93 Difference]: Finished difference Result 164 states and 195 transitions. [2021-05-02 18:12:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 18:12:56,523 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 1 states have call successors, (3), 2 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 161 [2021-05-02 18:12:56,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:12:56,524 INFO L225 Difference]: With dead ends: 164 [2021-05-02 18:12:56,524 INFO L226 Difference]: Without dead ends: 164 [2021-05-02 18:12:56,524 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 2409.8ms TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:12:56,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-05-02 18:12:56,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-05-02 18:12:56,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 160 states have (on average 1.2) internal successors, (192), 160 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:12:56,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 195 transitions. [2021-05-02 18:12:56,527 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 195 transitions. Word has length 161 [2021-05-02 18:12:56,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:12:56,527 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 195 transitions. [2021-05-02 18:12:56,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 1 states have call successors, (3), 2 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 18:12:56,527 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 195 transitions. [2021-05-02 18:12:56,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-05-02 18:12:56,527 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:12:56,527 INFO L523 BasicCegarLoop]: trace histogram [68, 37, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:12:56,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:12:56,728 INFO L428 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:12:56,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:12:56,728 INFO L82 PathProgramCache]: Analyzing trace with hash -98189055, now seen corresponding path program 29 times [2021-05-02 18:12:56,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:12:56,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826040666] [2021-05-02 18:12:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:12:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:57,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:12:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:12:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 2318 proven. 1406 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 18:12:57,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:12:57,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826040666] [2021-05-02 18:12:57,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826040666] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:57,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87996229] [2021-05-02 18:12:57,555 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 18:12:57,642 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 69 check-sat command(s) [2021-05-02 18:12:57,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:12:57,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 18:12:57,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:12:57,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:57,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:57,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:57,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:57,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:57,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:57,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:57,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:57,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:57,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:57,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:57,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:57,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:57,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:58,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:59,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:59,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:59,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:59,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:59,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:59,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:59,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:59,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:59,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:59,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:59,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:59,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 2346 proven. 1156 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-05-02 18:12:59,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87996229] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:12:59,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:12:59,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 37] total 85 [2021-05-02 18:12:59,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988581825] [2021-05-02 18:12:59,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 18:12:59,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:12:59,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 18:12:59,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 18:12:59,389 INFO L87 Difference]: Start difference. First operand 164 states and 195 transitions. Second operand has 85 states, 85 states have (on average 2.2823529411764705) internal successors, (194), 84 states have internal predecessors, (194), 1 states have call successors, (3), 2 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 18:13:04,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:13:04,332 INFO L93 Difference]: Finished difference Result 175 states and 211 transitions. [2021-05-02 18:13:04,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 18:13:04,332 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.2823529411764705) internal successors, (194), 84 states have internal predecessors, (194), 1 states have call successors, (3), 2 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 163 [2021-05-02 18:13:04,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:13:04,333 INFO L225 Difference]: With dead ends: 175 [2021-05-02 18:13:04,333 INFO L226 Difference]: Without dead ends: 175 [2021-05-02 18:13:04,334 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3367 ImplicationChecksByTransitivity, 6806.7ms TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722 [2021-05-02 18:13:04,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-02 18:13:04,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-05-02 18:13:04,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 1.2117647058823529) internal successors, (206), 170 states have internal predecessors, (206), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:13:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 209 transitions. [2021-05-02 18:13:04,336 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 209 transitions. Word has length 163 [2021-05-02 18:13:04,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:13:04,336 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 209 transitions. [2021-05-02 18:13:04,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.2823529411764705) internal successors, (194), 84 states have internal predecessors, (194), 1 states have call successors, (3), 2 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 18:13:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 209 transitions. [2021-05-02 18:13:04,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 18:13:04,337 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:13:04,337 INFO L523 BasicCegarLoop]: trace histogram [73, 38, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:13:04,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-05-02 18:13:04,538 INFO L428 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:13:04,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:13:04,538 INFO L82 PathProgramCache]: Analyzing trace with hash -123134381, now seen corresponding path program 30 times [2021-05-02 18:13:04,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:13:04,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889702887] [2021-05-02 18:13:04,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:13:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:05,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:13:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 2691 proven. 1482 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-02 18:13:05,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:13:05,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889702887] [2021-05-02 18:13:05,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889702887] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:05,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445389466] [2021-05-02 18:13:05,393 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 18:13:05,535 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2021-05-02 18:13:05,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:13:05,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 18:13:05,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:13:05,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 2691 proven. 1482 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-02 18:13:05,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445389466] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:05,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:13:05,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 18:13:05,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252697133] [2021-05-02 18:13:05,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 18:13:05,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:13:05,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 18:13:05,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:13:05,756 INFO L87 Difference]: Start difference. First operand 174 states and 209 transitions. Second operand has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 states have internal predecessors, (108), 1 states have call successors, (3), 2 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 18:13:07,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:13:07,795 INFO L93 Difference]: Finished difference Result 176 states and 211 transitions. [2021-05-02 18:13:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:13:07,796 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 states have internal predecessors, (108), 1 states have call successors, (3), 2 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 173 [2021-05-02 18:13:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:13:07,796 INFO L225 Difference]: With dead ends: 176 [2021-05-02 18:13:07,797 INFO L226 Difference]: Without dead ends: 176 [2021-05-02 18:13:07,797 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 2626.3ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:13:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-05-02 18:13:07,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-05-02 18:13:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 172 states have (on average 1.2093023255813953) internal successors, (208), 172 states have internal predecessors, (208), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:13:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 211 transitions. [2021-05-02 18:13:07,799 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 211 transitions. Word has length 173 [2021-05-02 18:13:07,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:13:07,800 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 211 transitions. [2021-05-02 18:13:07,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 states have internal predecessors, (108), 1 states have call successors, (3), 2 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 18:13:07,800 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 211 transitions. [2021-05-02 18:13:07,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-02 18:13:07,800 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:13:07,800 INFO L523 BasicCegarLoop]: trace histogram [74, 39, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:13:08,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:13:08,001 INFO L428 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:13:08,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:13:08,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1482380209, now seen corresponding path program 31 times [2021-05-02 18:13:08,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:13:08,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359892055] [2021-05-02 18:13:08,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:13:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:13:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 2760 proven. 1560 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-02 18:13:08,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:13:08,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359892055] [2021-05-02 18:13:08,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359892055] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:08,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609520563] [2021-05-02 18:13:08,899 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 18:13:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:09,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 18:13:09,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:13:09,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 2760 proven. 1560 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-02 18:13:09,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609520563] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:09,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:13:09,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 53 [2021-05-02 18:13:09,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531941807] [2021-05-02 18:13:09,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 18:13:09,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:13:09,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 18:13:09,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 18:13:09,230 INFO L87 Difference]: Start difference. First operand 176 states and 211 transitions. Second operand has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 52 states have internal predecessors, (110), 1 states have call successors, (3), 2 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 18:13:11,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:13:11,379 INFO L93 Difference]: Finished difference Result 178 states and 213 transitions. [2021-05-02 18:13:11,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 18:13:11,379 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 52 states have internal predecessors, (110), 1 states have call successors, (3), 2 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 175 [2021-05-02 18:13:11,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:13:11,380 INFO L225 Difference]: With dead ends: 178 [2021-05-02 18:13:11,380 INFO L226 Difference]: Without dead ends: 178 [2021-05-02 18:13:11,380 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 2767.1ms TimeCoverageRelationStatistics Valid=3877, Invalid=6425, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 18:13:11,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-05-02 18:13:11,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-05-02 18:13:11,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 174 states have (on average 1.206896551724138) internal successors, (210), 174 states have internal predecessors, (210), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:13:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 213 transitions. [2021-05-02 18:13:11,383 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 213 transitions. Word has length 175 [2021-05-02 18:13:11,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:13:11,383 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 213 transitions. [2021-05-02 18:13:11,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 52 states have internal predecessors, (110), 1 states have call successors, (3), 2 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 18:13:11,383 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 213 transitions. [2021-05-02 18:13:11,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-02 18:13:11,383 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:13:11,383 INFO L523 BasicCegarLoop]: trace histogram [75, 40, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:13:11,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-02 18:13:11,593 INFO L428 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:13:11,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:13:11,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1806325361, now seen corresponding path program 32 times [2021-05-02 18:13:11,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:13:11,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619456180] [2021-05-02 18:13:11,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:13:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:12,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:13:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 2829 proven. 1640 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-02 18:13:12,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:13:12,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619456180] [2021-05-02 18:13:12,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619456180] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:12,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382554527] [2021-05-02 18:13:12,542 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 18:13:12,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:13:12,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:13:12,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 18:13:12,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:13:12,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 2829 proven. 1640 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-05-02 18:13:12,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382554527] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:12,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:13:12,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-02 18:13:12,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941426974] [2021-05-02 18:13:12,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 18:13:12,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:13:12,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 18:13:12,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 18:13:12,810 INFO L87 Difference]: Start difference. First operand 178 states and 213 transitions. Second operand has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 53 states have internal predecessors, (112), 1 states have call successors, (3), 2 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 18:13:14,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:13:14,967 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2021-05-02 18:13:14,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 18:13:14,968 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 53 states have internal predecessors, (112), 1 states have call successors, (3), 2 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 177 [2021-05-02 18:13:14,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:13:14,968 INFO L225 Difference]: With dead ends: 180 [2021-05-02 18:13:14,969 INFO L226 Difference]: Without dead ends: 180 [2021-05-02 18:13:14,969 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 2806.0ms TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 18:13:14,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-05-02 18:13:14,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-05-02 18:13:14,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 176 states have (on average 1.2045454545454546) internal successors, (212), 176 states have internal predecessors, (212), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:13:14,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 215 transitions. [2021-05-02 18:13:14,971 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 215 transitions. Word has length 177 [2021-05-02 18:13:14,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:13:14,971 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 215 transitions. [2021-05-02 18:13:14,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 53 states have internal predecessors, (112), 1 states have call successors, (3), 2 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 18:13:14,971 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 215 transitions. [2021-05-02 18:13:14,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-02 18:13:14,972 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:13:14,972 INFO L523 BasicCegarLoop]: trace histogram [76, 41, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:13:15,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 18:13:15,181 INFO L428 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:13:15,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:13:15,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1156448275, now seen corresponding path program 33 times [2021-05-02 18:13:15,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:13:15,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311532296] [2021-05-02 18:13:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:13:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:17,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:13:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:13:17,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:13:17,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311532296] [2021-05-02 18:13:17,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311532296] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:17,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663765135] [2021-05-02 18:13:17,451 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 18:13:17,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 72 check-sat command(s) [2021-05-02 18:13:17,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:13:17,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 18:13:17,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:13:17,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 2911 proven. 1225 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2021-05-02 18:13:17,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663765135] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:17,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:13:17,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 38] total 89 [2021-05-02 18:13:17,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360222803] [2021-05-02 18:13:17,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 18:13:17,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:13:17,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 18:13:17,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 18:13:17,761 INFO L87 Difference]: Start difference. First operand 180 states and 215 transitions. Second operand has 89 states, 89 states have (on average 2.235955056179775) internal successors, (199), 88 states have internal predecessors, (199), 1 states have call successors, (3), 2 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 18:13:22,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:13:22,674 INFO L93 Difference]: Finished difference Result 183 states and 220 transitions. [2021-05-02 18:13:22,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 18:13:22,674 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.235955056179775) internal successors, (199), 88 states have internal predecessors, (199), 1 states have call successors, (3), 2 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 179 [2021-05-02 18:13:22,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:13:22,675 INFO L225 Difference]: With dead ends: 183 [2021-05-02 18:13:22,675 INFO L226 Difference]: Without dead ends: 183 [2021-05-02 18:13:22,676 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 6610.2ms TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2021-05-02 18:13:22,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-05-02 18:13:22,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-05-02 18:13:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 178 states have (on average 1.2078651685393258) internal successors, (215), 178 states have internal predecessors, (215), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:13:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 218 transitions. [2021-05-02 18:13:22,678 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 218 transitions. Word has length 179 [2021-05-02 18:13:22,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:13:22,678 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 218 transitions. [2021-05-02 18:13:22,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 2.235955056179775) internal successors, (199), 88 states have internal predecessors, (199), 1 states have call successors, (3), 2 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 18:13:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 218 transitions. [2021-05-02 18:13:22,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 18:13:22,679 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:13:22,679 INFO L523 BasicCegarLoop]: trace histogram [77, 41, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:13:22,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-02 18:13:22,880 INFO L428 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:13:22,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:13:22,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1048784874, now seen corresponding path program 34 times [2021-05-02 18:13:22,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:13:22,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469344504] [2021-05-02 18:13:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:13:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:25,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:13:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:13:25,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:13:25,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469344504] [2021-05-02 18:13:25,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469344504] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:25,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669740670] [2021-05-02 18:13:25,458 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 18:13:25,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:13:25,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:13:25,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 18:13:25,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:13:25,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:13:25,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669740670] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:25,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:13:25,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-02 18:13:25,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543216219] [2021-05-02 18:13:25,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:13:25,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:13:25,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:13:25,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:13:25,856 INFO L87 Difference]: Start difference. First operand 182 states and 218 transitions. Second operand has 91 states, 91 states have (on average 2.0) internal successors, (182), 90 states have internal predecessors, (182), 1 states have call successors, (3), 2 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 18:13:31,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:13:31,237 INFO L93 Difference]: Finished difference Result 185 states and 223 transitions. [2021-05-02 18:13:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 18:13:31,238 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.0) internal successors, (182), 90 states have internal predecessors, (182), 1 states have call successors, (3), 2 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 181 [2021-05-02 18:13:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:13:31,239 INFO L225 Difference]: With dead ends: 185 [2021-05-02 18:13:31,239 INFO L226 Difference]: Without dead ends: 185 [2021-05-02 18:13:31,240 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 7414.3ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-02 18:13:31,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-05-02 18:13:31,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2021-05-02 18:13:31,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 180 states have (on average 1.211111111111111) internal successors, (218), 180 states have internal predecessors, (218), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:13:31,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 221 transitions. [2021-05-02 18:13:31,242 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 221 transitions. Word has length 181 [2021-05-02 18:13:31,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:13:31,242 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 221 transitions. [2021-05-02 18:13:31,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.0) internal successors, (182), 90 states have internal predecessors, (182), 1 states have call successors, (3), 2 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 18:13:31,242 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 221 transitions. [2021-05-02 18:13:31,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-02 18:13:31,243 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:13:31,243 INFO L523 BasicCegarLoop]: trace histogram [78, 41, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:13:31,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 18:13:31,444 INFO L428 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:13:31,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:13:31,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1436003161, now seen corresponding path program 35 times [2021-05-02 18:13:31,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:13:31,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701373312] [2021-05-02 18:13:31,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:13:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:34,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:13:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:34,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 0 proven. 6084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:13:34,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:13:34,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701373312] [2021-05-02 18:13:34,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701373312] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:34,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587268398] [2021-05-02 18:13:34,172 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 18:13:34,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2021-05-02 18:13:34,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:13:34,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 18:13:34,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:13:34,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 3081 proven. 1521 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2021-05-02 18:13:34,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587268398] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:34,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:13:34,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 42] total 93 [2021-05-02 18:13:34,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868186114] [2021-05-02 18:13:34,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 18:13:34,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:13:34,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 18:13:34,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 18:13:34,681 INFO L87 Difference]: Start difference. First operand 184 states and 221 transitions. Second operand has 93 states, 93 states have (on average 2.2580645161290325) internal successors, (210), 92 states have internal predecessors, (210), 1 states have call successors, (3), 2 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 18:13:40,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:13:40,358 INFO L93 Difference]: Finished difference Result 191 states and 232 transitions. [2021-05-02 18:13:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 18:13:40,359 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.2580645161290325) internal successors, (210), 92 states have internal predecessors, (210), 1 states have call successors, (3), 2 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 183 [2021-05-02 18:13:40,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:13:40,360 INFO L225 Difference]: With dead ends: 191 [2021-05-02 18:13:40,360 INFO L226 Difference]: Without dead ends: 191 [2021-05-02 18:13:40,361 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4129 ImplicationChecksByTransitivity, 7958.9ms TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306 [2021-05-02 18:13:40,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-02 18:13:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2021-05-02 18:13:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 186 states have (on average 1.2204301075268817) internal successors, (227), 186 states have internal predecessors, (227), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:13:40,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 230 transitions. [2021-05-02 18:13:40,363 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 230 transitions. Word has length 183 [2021-05-02 18:13:40,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:13:40,363 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 230 transitions. [2021-05-02 18:13:40,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.2580645161290325) internal successors, (210), 92 states have internal predecessors, (210), 1 states have call successors, (3), 2 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 18:13:40,363 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 230 transitions. [2021-05-02 18:13:40,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-02 18:13:40,364 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:13:40,364 INFO L523 BasicCegarLoop]: trace histogram [81, 41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:13:40,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 18:13:40,573 INFO L428 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:13:40,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:13:40,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1126539102, now seen corresponding path program 36 times [2021-05-02 18:13:40,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:13:40,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200789546] [2021-05-02 18:13:40,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:13:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:43,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:13:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 0 proven. 6561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:13:43,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:13:43,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200789546] [2021-05-02 18:13:43,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200789546] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:43,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277994247] [2021-05-02 18:13:43,486 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 18:13:43,650 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 82 check-sat command(s) [2021-05-02 18:13:43,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:13:43,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 18:13:43,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:13:43,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 3321 proven. 1600 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2021-05-02 18:13:43,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277994247] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:43,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:13:43,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 43] total 94 [2021-05-02 18:13:43,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717604239] [2021-05-02 18:13:43,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 18:13:43,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:13:43,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 18:13:43,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:13:43,897 INFO L87 Difference]: Start difference. First operand 190 states and 230 transitions. Second operand has 94 states, 94 states have (on average 2.223404255319149) internal successors, (209), 93 states have internal predecessors, (209), 1 states have call successors, (3), 2 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 18:13:49,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:13:49,545 INFO L93 Difference]: Finished difference Result 193 states and 235 transitions. [2021-05-02 18:13:49,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-02 18:13:49,546 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.223404255319149) internal successors, (209), 93 states have internal predecessors, (209), 1 states have call successors, (3), 2 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 189 [2021-05-02 18:13:49,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:13:49,547 INFO L225 Difference]: With dead ends: 193 [2021-05-02 18:13:49,547 INFO L226 Difference]: Without dead ends: 193 [2021-05-02 18:13:49,548 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4225 ImplicationChecksByTransitivity, 7982.4ms TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040 [2021-05-02 18:13:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-05-02 18:13:49,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2021-05-02 18:13:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 188 states have (on average 1.2234042553191489) internal successors, (230), 188 states have internal predecessors, (230), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:13:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 233 transitions. [2021-05-02 18:13:49,550 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 233 transitions. Word has length 189 [2021-05-02 18:13:49,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:13:49,550 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 233 transitions. [2021-05-02 18:13:49,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.223404255319149) internal successors, (209), 93 states have internal predecessors, (209), 1 states have call successors, (3), 2 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 18:13:49,550 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 233 transitions. [2021-05-02 18:13:49,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 18:13:49,551 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:13:49,551 INFO L523 BasicCegarLoop]: trace histogram [82, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:13:49,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 18:13:49,751 INFO L428 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:13:49,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:13:49,752 INFO L82 PathProgramCache]: Analyzing trace with hash 271365915, now seen corresponding path program 37 times [2021-05-02 18:13:49,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:13:49,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228067223] [2021-05-02 18:13:49,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:13:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:52,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:13:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:52,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:13:52,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:13:52,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228067223] [2021-05-02 18:13:52,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228067223] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:52,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268806502] [2021-05-02 18:13:52,825 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 18:13:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:13:52,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 18:13:52,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:13:52,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:52,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:13:53,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268806502] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:13:53,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:13:53,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-02 18:13:53,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7179668] [2021-05-02 18:13:53,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 18:13:53,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:13:53,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 18:13:53,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:13:53,185 INFO L87 Difference]: Start difference. First operand 192 states and 233 transitions. Second operand has 96 states, 96 states have (on average 2.0) internal successors, (192), 95 states have internal predecessors, (192), 1 states have call successors, (3), 2 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 18:13:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:13:59,319 INFO L93 Difference]: Finished difference Result 195 states and 238 transitions. [2021-05-02 18:13:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:13:59,320 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0) internal successors, (192), 95 states have internal predecessors, (192), 1 states have call successors, (3), 2 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 191 [2021-05-02 18:13:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:13:59,321 INFO L225 Difference]: With dead ends: 195 [2021-05-02 18:13:59,321 INFO L226 Difference]: Without dead ends: 195 [2021-05-02 18:13:59,322 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 8525.5ms TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 18:13:59,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-05-02 18:13:59,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2021-05-02 18:13:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 190 states have (on average 1.2263157894736842) internal successors, (233), 190 states have internal predecessors, (233), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:13:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 236 transitions. [2021-05-02 18:13:59,334 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 236 transitions. Word has length 191 [2021-05-02 18:13:59,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:13:59,334 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 236 transitions. [2021-05-02 18:13:59,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 2.0) internal successors, (192), 95 states have internal predecessors, (192), 1 states have call successors, (3), 2 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 18:13:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 236 transitions. [2021-05-02 18:13:59,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-02 18:13:59,335 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:13:59,335 INFO L523 BasicCegarLoop]: trace histogram [83, 42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:13:59,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 18:13:59,535 INFO L428 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:13:59,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:13:59,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1211313256, now seen corresponding path program 38 times [2021-05-02 18:13:59,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:13:59,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83956985] [2021-05-02 18:13:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:13:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:14:02,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:14:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:14:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 0 proven. 6889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:14:02,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:14:02,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83956985] [2021-05-02 18:14:02,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83956985] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:14:02,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748969987] [2021-05-02 18:14:02,909 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 18:14:02,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:14:02,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:14:02,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 18:14:02,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:14:03,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:03,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 0 proven. 6889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:14:03,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748969987] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:14:03,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:14:03,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-02 18:14:03,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91631779] [2021-05-02 18:14:03,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 18:14:03,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:14:03,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 18:14:03,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 18:14:03,361 INFO L87 Difference]: Start difference. First operand 194 states and 236 transitions. Second operand has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 1 states have call successors, (3), 2 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 18:14:10,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:14:10,042 INFO L93 Difference]: Finished difference Result 197 states and 241 transitions. [2021-05-02 18:14:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 18:14:10,042 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 1 states have call successors, (3), 2 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 193 [2021-05-02 18:14:10,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:14:10,043 INFO L225 Difference]: With dead ends: 197 [2021-05-02 18:14:10,043 INFO L226 Difference]: Without dead ends: 197 [2021-05-02 18:14:10,044 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 9276.2ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-02 18:14:10,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-05-02 18:14:10,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-05-02 18:14:10,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 192 states have (on average 1.2291666666666667) internal successors, (236), 192 states have internal predecessors, (236), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:14:10,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 239 transitions. [2021-05-02 18:14:10,046 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 239 transitions. Word has length 193 [2021-05-02 18:14:10,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:14:10,047 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 239 transitions. [2021-05-02 18:14:10,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 1 states have call successors, (3), 2 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 18:14:10,047 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 239 transitions. [2021-05-02 18:14:10,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-05-02 18:14:10,065 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:14:10,065 INFO L523 BasicCegarLoop]: trace histogram [84, 43, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:14:10,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:14:10,266 INFO L428 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:14:10,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:14:10,266 INFO L82 PathProgramCache]: Analyzing trace with hash -136854315, now seen corresponding path program 39 times [2021-05-02 18:14:10,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:14:10,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705680403] [2021-05-02 18:14:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:14:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:14:13,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:14:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:14:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 0 proven. 7056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:14:13,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:14:13,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705680403] [2021-05-02 18:14:13,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705680403] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:14:13,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969626967] [2021-05-02 18:14:13,554 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 18:14:13,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 85 check-sat command(s) [2021-05-02 18:14:13,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:14:13,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 95 conjunts are in the unsatisfiable core [2021-05-02 18:14:13,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:14:13,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:13,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 0 proven. 7056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:14:14,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969626967] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:14:14,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:14:14,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96] total 98 [2021-05-02 18:14:14,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210356653] [2021-05-02 18:14:14,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2021-05-02 18:14:14,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:14:14,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-05-02 18:14:14,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 18:14:14,084 INFO L87 Difference]: Start difference. First operand 196 states and 239 transitions. Second operand has 98 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 1 states have call successors, (3), 2 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 18:14:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:14:19,977 INFO L93 Difference]: Finished difference Result 199 states and 244 transitions. [2021-05-02 18:14:19,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 18:14:19,977 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 1 states have call successors, (3), 2 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 195 [2021-05-02 18:14:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:14:19,978 INFO L225 Difference]: With dead ends: 199 [2021-05-02 18:14:19,978 INFO L226 Difference]: Without dead ends: 199 [2021-05-02 18:14:19,980 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4740 ImplicationChecksByTransitivity, 8432.0ms TimeCoverageRelationStatistics Valid=13777, Invalid=22895, Unknown=0, NotChecked=0, Total=36672 [2021-05-02 18:14:19,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-02 18:14:19,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-05-02 18:14:19,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 194 states have (on average 1.231958762886598) internal successors, (239), 194 states have internal predecessors, (239), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:14:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 242 transitions. [2021-05-02 18:14:19,982 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 242 transitions. Word has length 195 [2021-05-02 18:14:19,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:14:19,982 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 242 transitions. [2021-05-02 18:14:19,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 98 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 1 states have call successors, (3), 2 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 18:14:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 242 transitions. [2021-05-02 18:14:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 18:14:19,983 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:14:19,983 INFO L523 BasicCegarLoop]: trace histogram [85, 44, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:14:20,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:14:20,184 INFO L428 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:14:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:14:20,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1626036946, now seen corresponding path program 40 times [2021-05-02 18:14:20,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:14:20,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895064334] [2021-05-02 18:14:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:14:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:14:23,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:14:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:14:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 0 proven. 7225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:14:23,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:14:23,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895064334] [2021-05-02 18:14:23,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895064334] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:14:23,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947464486] [2021-05-02 18:14:23,696 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 18:14:23,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:14:23,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:14:23,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-02 18:14:23,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:14:23,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:23,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 0 proven. 7225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:14:24,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947464486] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:14:24,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:14:24,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 99 [2021-05-02 18:14:24,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890530951] [2021-05-02 18:14:24,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:14:24,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:14:24,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:14:24,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:14:24,086 INFO L87 Difference]: Start difference. First operand 198 states and 242 transitions. Second operand has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 1 states have call successors, (3), 2 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 18:14:30,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:14:30,306 INFO L93 Difference]: Finished difference Result 201 states and 247 transitions. [2021-05-02 18:14:30,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-02 18:14:30,306 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 1 states have call successors, (3), 2 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 197 [2021-05-02 18:14:30,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:14:30,307 INFO L225 Difference]: With dead ends: 201 [2021-05-02 18:14:30,307 INFO L226 Difference]: Without dead ends: 201 [2021-05-02 18:14:30,308 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 9009.9ms TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 18:14:30,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-05-02 18:14:30,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2021-05-02 18:14:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 196 states have (on average 1.2346938775510203) internal successors, (242), 196 states have internal predecessors, (242), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:14:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 245 transitions. [2021-05-02 18:14:30,311 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 245 transitions. Word has length 197 [2021-05-02 18:14:30,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:14:30,311 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 245 transitions. [2021-05-02 18:14:30,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 1 states have call successors, (3), 2 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 18:14:30,311 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 245 transitions. [2021-05-02 18:14:30,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-02 18:14:30,312 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:14:30,312 INFO L523 BasicCegarLoop]: trace histogram [86, 45, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:14:30,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:14:30,521 INFO L428 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:14:30,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:14:30,521 INFO L82 PathProgramCache]: Analyzing trace with hash -747543153, now seen corresponding path program 41 times [2021-05-02 18:14:30,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:14:30,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885314614] [2021-05-02 18:14:30,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:14:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:14:33,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:14:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:14:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 0 proven. 7396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:14:33,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:14:33,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885314614] [2021-05-02 18:14:33,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885314614] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:14:33,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123246619] [2021-05-02 18:14:33,880 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 18:14:33,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 87 check-sat command(s) [2021-05-02 18:14:33,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:14:33,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 18:14:33,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:14:34,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 3731 proven. 2025 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2021-05-02 18:14:34,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123246619] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:14:34,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:14:34,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 48] total 99 [2021-05-02 18:14:34,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082406813] [2021-05-02 18:14:34,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:14:34,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:14:34,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:14:34,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:14:34,329 INFO L87 Difference]: Start difference. First operand 200 states and 245 transitions. Second operand has 99 states, 99 states have (on average 2.212121212121212) internal successors, (219), 98 states have internal predecessors, (219), 1 states have call successors, (3), 2 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 18:14:40,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:14:40,472 INFO L93 Difference]: Finished difference Result 203 states and 250 transitions. [2021-05-02 18:14:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:14:40,473 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.212121212121212) internal successors, (219), 98 states have internal predecessors, (219), 1 states have call successors, (3), 2 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 199 [2021-05-02 18:14:40,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:14:40,473 INFO L225 Difference]: With dead ends: 203 [2021-05-02 18:14:40,473 INFO L226 Difference]: Without dead ends: 203 [2021-05-02 18:14:40,475 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4700 ImplicationChecksByTransitivity, 8858.7ms TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2021-05-02 18:14:40,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-05-02 18:14:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2021-05-02 18:14:40,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 198 states have (on average 1.2373737373737375) internal successors, (245), 198 states have internal predecessors, (245), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:14:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 248 transitions. [2021-05-02 18:14:40,478 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 248 transitions. Word has length 199 [2021-05-02 18:14:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:14:40,478 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 248 transitions. [2021-05-02 18:14:40,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.212121212121212) internal successors, (219), 98 states have internal predecessors, (219), 1 states have call successors, (3), 2 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 18:14:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 248 transitions. [2021-05-02 18:14:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-02 18:14:40,479 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:14:40,479 INFO L523 BasicCegarLoop]: trace histogram [87, 46, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:14:40,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-05-02 18:14:40,695 INFO L428 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:14:40,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:14:40,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1130384116, now seen corresponding path program 42 times [2021-05-02 18:14:40,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:14:40,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189727399] [2021-05-02 18:14:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:14:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:14:43,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:14:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:14:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 7569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:14:43,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:14:43,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189727399] [2021-05-02 18:14:43,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189727399] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:14:43,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667135350] [2021-05-02 18:14:43,071 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 18:14:43,278 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 87 check-sat command(s) [2021-05-02 18:14:43,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:14:43,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 18:14:43,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:14:43,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3813 proven. 2116 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2021-05-02 18:14:43,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667135350] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:14:43,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:14:43,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 49] total 100 [2021-05-02 18:14:43,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971025990] [2021-05-02 18:14:43,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 18:14:43,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:14:43,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 18:14:43,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:14:43,665 INFO L87 Difference]: Start difference. First operand 202 states and 248 transitions. Second operand has 100 states, 100 states have (on average 2.21) internal successors, (221), 99 states have internal predecessors, (221), 1 states have call successors, (3), 2 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 18:14:51,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:14:51,550 INFO L93 Difference]: Finished difference Result 205 states and 253 transitions. [2021-05-02 18:14:51,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-02 18:14:51,551 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.21) internal successors, (221), 99 states have internal predecessors, (221), 1 states have call successors, (3), 2 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 201 [2021-05-02 18:14:51,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:14:51,552 INFO L225 Difference]: With dead ends: 205 [2021-05-02 18:14:51,552 INFO L226 Difference]: Without dead ends: 205 [2021-05-02 18:14:51,553 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4798 ImplicationChecksByTransitivity, 9377.0ms TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612 [2021-05-02 18:14:51,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-05-02 18:14:51,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-05-02 18:14:51,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 200 states have (on average 1.24) internal successors, (248), 200 states have internal predecessors, (248), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:14:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 251 transitions. [2021-05-02 18:14:51,556 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 251 transitions. Word has length 201 [2021-05-02 18:14:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:14:51,556 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 251 transitions. [2021-05-02 18:14:51,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.21) internal successors, (221), 99 states have internal predecessors, (221), 1 states have call successors, (3), 2 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 18:14:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 251 transitions. [2021-05-02 18:14:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 18:14:51,557 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:14:51,557 INFO L523 BasicCegarLoop]: trace histogram [88, 47, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:14:51,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:14:51,765 INFO L428 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:14:51,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:14:51,765 INFO L82 PathProgramCache]: Analyzing trace with hash 326637897, now seen corresponding path program 43 times [2021-05-02 18:14:51,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:14:51,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388396665] [2021-05-02 18:14:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:14:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:14:55,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:14:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:14:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 7744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:14:55,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:14:55,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388396665] [2021-05-02 18:14:55,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388396665] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:14:55,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712587066] [2021-05-02 18:14:55,707 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 18:14:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:14:55,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-02 18:14:55,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:14:55,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:55,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 7744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:14:56,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712587066] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:14:56,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:14:56,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 102 [2021-05-02 18:14:56,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882974667] [2021-05-02 18:14:56,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 18:14:56,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:14:56,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 18:14:56,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 18:14:56,218 INFO L87 Difference]: Start difference. First operand 204 states and 251 transitions. Second operand has 102 states, 102 states have (on average 2.0) internal successors, (204), 101 states have internal predecessors, (204), 1 states have call successors, (3), 2 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 18:15:03,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:15:03,813 INFO L93 Difference]: Finished difference Result 207 states and 256 transitions. [2021-05-02 18:15:03,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 18:15:03,814 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.0) internal successors, (204), 101 states have internal predecessors, (204), 1 states have call successors, (3), 2 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 203 [2021-05-02 18:15:03,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:15:03,815 INFO L225 Difference]: With dead ends: 207 [2021-05-02 18:15:03,815 INFO L226 Difference]: Without dead ends: 207 [2021-05-02 18:15:03,816 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 10644.1ms TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2021-05-02 18:15:03,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-02 18:15:03,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-05-02 18:15:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 202 states have (on average 1.2425742574257426) internal successors, (251), 202 states have internal predecessors, (251), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 254 transitions. [2021-05-02 18:15:03,819 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 254 transitions. Word has length 203 [2021-05-02 18:15:03,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:15:03,819 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 254 transitions. [2021-05-02 18:15:03,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 2.0) internal successors, (204), 101 states have internal predecessors, (204), 1 states have call successors, (3), 2 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 18:15:03,819 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 254 transitions. [2021-05-02 18:15:03,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-02 18:15:03,820 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:15:03,820 INFO L523 BasicCegarLoop]: trace histogram [89, 48, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:15:04,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:15:04,021 INFO L428 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:15:04,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:15:04,021 INFO L82 PathProgramCache]: Analyzing trace with hash 365453894, now seen corresponding path program 44 times [2021-05-02 18:15:04,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:15:04,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150424463] [2021-05-02 18:15:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:15:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:07,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:15:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 0 proven. 7921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:15:07,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:15:07,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150424463] [2021-05-02 18:15:07,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150424463] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:15:07,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777221161] [2021-05-02 18:15:07,665 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 18:15:07,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:15:07,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:15:07,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 18:15:07,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:15:07,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:07,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:08,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 0 proven. 7921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:15:08,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777221161] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:15:08,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:15:08,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-02 18:15:08,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178079976] [2021-05-02 18:15:08,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 18:15:08,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:15:08,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 18:15:08,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:15:08,103 INFO L87 Difference]: Start difference. First operand 206 states and 254 transitions. Second operand has 103 states, 103 states have (on average 2.0) internal successors, (206), 102 states have internal predecessors, (206), 1 states have call successors, (3), 2 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 18:15:14,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:15:14,549 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2021-05-02 18:15:14,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 18:15:14,550 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0) internal successors, (206), 102 states have internal predecessors, (206), 1 states have call successors, (3), 2 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 205 [2021-05-02 18:15:14,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:15:14,551 INFO L225 Difference]: With dead ends: 209 [2021-05-02 18:15:14,551 INFO L226 Difference]: Without dead ends: 209 [2021-05-02 18:15:14,553 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 9279.6ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-02 18:15:14,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-05-02 18:15:14,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2021-05-02 18:15:14,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 1.2450980392156863) internal successors, (254), 204 states have internal predecessors, (254), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:14,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 257 transitions. [2021-05-02 18:15:14,555 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 257 transitions. Word has length 205 [2021-05-02 18:15:14,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:15:14,555 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 257 transitions. [2021-05-02 18:15:14,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0) internal successors, (206), 102 states have internal predecessors, (206), 1 states have call successors, (3), 2 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 18:15:14,555 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 257 transitions. [2021-05-02 18:15:14,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-02 18:15:14,556 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:15:14,556 INFO L523 BasicCegarLoop]: trace histogram [90, 49, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:15:14,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 18:15:14,765 INFO L428 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:15:14,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:15:14,765 INFO L82 PathProgramCache]: Analyzing trace with hash -987078653, now seen corresponding path program 45 times [2021-05-02 18:15:14,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:15:14,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459231297] [2021-05-02 18:15:14,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:15:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:17,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:15:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 0 proven. 8100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:15:17,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:15:17,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459231297] [2021-05-02 18:15:17,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459231297] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:15:17,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275049799] [2021-05-02 18:15:17,377 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 18:15:17,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 91 check-sat command(s) [2021-05-02 18:15:17,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:15:17,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 101 conjunts are in the unsatisfiable core [2021-05-02 18:15:17,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:15:17,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:17,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 0 proven. 8100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:15:17,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275049799] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:15:17,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:15:17,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 102] total 104 [2021-05-02 18:15:17,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670188550] [2021-05-02 18:15:17,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 18:15:17,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:15:17,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 18:15:17,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 18:15:17,829 INFO L87 Difference]: Start difference. First operand 208 states and 257 transitions. Second operand has 104 states, 104 states have (on average 2.0) internal successors, (208), 103 states have internal predecessors, (208), 1 states have call successors, (3), 2 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 18:15:24,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:15:24,390 INFO L93 Difference]: Finished difference Result 210 states and 260 transitions. [2021-05-02 18:15:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 18:15:24,391 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.0) internal successors, (208), 103 states have internal predecessors, (208), 1 states have call successors, (3), 2 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 207 [2021-05-02 18:15:24,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:15:24,391 INFO L225 Difference]: With dead ends: 210 [2021-05-02 18:15:24,391 INFO L226 Difference]: Without dead ends: 210 [2021-05-02 18:15:24,393 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5343 ImplicationChecksByTransitivity, 8477.5ms TimeCoverageRelationStatistics Valid=15556, Invalid=25856, Unknown=0, NotChecked=0, Total=41412 [2021-05-02 18:15:24,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-05-02 18:15:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-05-02 18:15:24,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 206 states have (on average 1.2475728155339805) internal successors, (257), 206 states have internal predecessors, (257), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 260 transitions. [2021-05-02 18:15:24,396 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 260 transitions. Word has length 207 [2021-05-02 18:15:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:15:24,396 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 260 transitions. [2021-05-02 18:15:24,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 2.0) internal successors, (208), 103 states have internal predecessors, (208), 1 states have call successors, (3), 2 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 18:15:24,396 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 260 transitions. [2021-05-02 18:15:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 18:15:24,397 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:15:24,397 INFO L523 BasicCegarLoop]: trace histogram [91, 50, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:15:24,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-02 18:15:24,607 INFO L428 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:15:24,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:15:24,608 INFO L82 PathProgramCache]: Analyzing trace with hash 604234368, now seen corresponding path program 46 times [2021-05-02 18:15:24,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:15:24,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435671986] [2021-05-02 18:15:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:15:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:25,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:15:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 6559 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2021-05-02 18:15:25,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:15:25,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435671986] [2021-05-02 18:15:25,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435671986] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:15:25,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079984384] [2021-05-02 18:15:25,854 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 18:15:25,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:15:25,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:15:25,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-02 18:15:25,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:15:26,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:26,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:26,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:26,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:15:26,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 6559 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2021-05-02 18:15:26,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079984384] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:15:26,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:15:26,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 56 [2021-05-02 18:15:26,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75341538] [2021-05-02 18:15:26,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 18:15:26,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:15:26,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 18:15:26,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=2970, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 18:15:26,377 INFO L87 Difference]: Start difference. First operand 210 states and 260 transitions. Second operand has 56 states, 56 states have (on average 2.2857142857142856) internal successors, (128), 55 states have internal predecessors, (128), 1 states have call successors, (3), 2 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 18:15:31,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:15:31,965 INFO L93 Difference]: Finished difference Result 2862 states and 4237 transitions. [2021-05-02 18:15:31,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 18:15:31,966 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.2857142857142856) internal successors, (128), 55 states have internal predecessors, (128), 1 states have call successors, (3), 2 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 209 [2021-05-02 18:15:31,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:15:31,973 INFO L225 Difference]: With dead ends: 2862 [2021-05-02 18:15:31,973 INFO L226 Difference]: Without dead ends: 2861 [2021-05-02 18:15:31,973 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 208 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 3439.0ms TimeCoverageRelationStatistics Valid=321, Invalid=11235, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 18:15:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-05-02 18:15:31,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 212. [2021-05-02 18:15:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 208 states have (on average 1.25) internal successors, (260), 208 states have internal predecessors, (260), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:31,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 263 transitions. [2021-05-02 18:15:31,983 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 263 transitions. Word has length 209 [2021-05-02 18:15:31,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:15:31,983 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 263 transitions. [2021-05-02 18:15:31,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 2.2857142857142856) internal successors, (128), 55 states have internal predecessors, (128), 1 states have call successors, (3), 2 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 18:15:31,983 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 263 transitions. [2021-05-02 18:15:31,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-05-02 18:15:31,984 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:15:31,984 INFO L523 BasicCegarLoop]: trace histogram [92, 51, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:15:32,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 18:15:32,184 INFO L428 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:15:32,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:15:32,185 INFO L82 PathProgramCache]: Analyzing trace with hash 847690173, now seen corresponding path program 47 times [2021-05-02 18:15:32,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:15:32,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546064153] [2021-05-02 18:15:32,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:15:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:33,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:15:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 6742 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2021-05-02 18:15:33,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:15:33,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546064153] [2021-05-02 18:15:33,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546064153] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:15:33,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:15:33,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2021-05-02 18:15:33,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593104427] [2021-05-02 18:15:33,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 18:15:33,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:15:33,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 18:15:33,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 18:15:33,285 INFO L87 Difference]: Start difference. First operand 212 states and 263 transitions. Second operand has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 52 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:35,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:15:35,032 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2021-05-02 18:15:35,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 18:15:35,032 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 52 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 211 [2021-05-02 18:15:35,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:15:35,032 INFO L225 Difference]: With dead ends: 207 [2021-05-02 18:15:35,032 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 18:15:35,033 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 2554.9ms TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:15:35,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 18:15:35,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 18:15:35,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 18:15:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 18:15:35,033 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 211 [2021-05-02 18:15:35,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:15:35,033 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 18:15:35,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 52 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:35,033 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 18:15:35,034 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 18:15:35,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-02 18:15:35,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:15:35 BasicIcfg [2021-05-02 18:15:35,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:15:35,038 INFO L168 Benchmark]: Toolchain (without parser) took 231366.14 ms. Allocated memory was 181.4 MB in the beginning and 750.8 MB in the end (delta: 569.4 MB). Free memory was 146.9 MB in the beginning and 611.3 MB in the end (delta: -464.4 MB). Peak memory consumption was 106.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:15:35,038 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 181.4 MB. Free memory is still 163.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:15:35,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.91 ms. Allocated memory is still 181.4 MB. Free memory was 146.7 MB in the beginning and 165.5 MB in the end (delta: -18.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 18:15:35,038 INFO L168 Benchmark]: Boogie Preprocessor took 37.11 ms. Allocated memory is still 181.4 MB. Free memory was 165.5 MB in the beginning and 163.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:15:35,038 INFO L168 Benchmark]: RCFGBuilder took 339.45 ms. Allocated memory is still 181.4 MB. Free memory was 163.8 MB in the beginning and 144.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-05-02 18:15:35,039 INFO L168 Benchmark]: IcfgTransformer took 22.35 ms. Allocated memory is still 181.4 MB. Free memory was 144.9 MB in the beginning and 143.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:15:35,039 INFO L168 Benchmark]: TraceAbstraction took 230736.80 ms. Allocated memory was 181.4 MB in the beginning and 750.8 MB in the end (delta: 569.4 MB). Free memory was 143.3 MB in the beginning and 611.3 MB in the end (delta: -468.0 MB). Peak memory consumption was 102.4 MB. Max. memory is 8.0 GB. [2021-05-02 18:15:35,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 181.4 MB. Free memory is still 163.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 222.91 ms. Allocated memory is still 181.4 MB. Free memory was 146.7 MB in the beginning and 165.5 MB in the end (delta: -18.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.11 ms. Allocated memory is still 181.4 MB. Free memory was 165.5 MB in the beginning and 163.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 339.45 ms. Allocated memory is still 181.4 MB. Free memory was 163.8 MB in the beginning and 144.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * IcfgTransformer took 22.35 ms. Allocated memory is still 181.4 MB. Free memory was 144.9 MB in the beginning and 143.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 230736.80 ms. Allocated memory was 181.4 MB in the beginning and 750.8 MB in the end (delta: 569.4 MB). Free memory was 143.3 MB in the beginning and 611.3 MB in the end (delta: -468.0 MB). Peak memory consumption was 102.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 96]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 230667.0ms, OverallIterations: 50, TraceHistogramMax: 92, EmptinessCheckTime: 80.1ms, AutomataDifference: 142149.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 566 SDtfs, 5296 SDslu, 7043 SDs, 0 SdLazy, 27124 SolverSat, 6430 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11431.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11652 GetRequests, 6391 SyntacticMatches, 7 SemanticMatches, 5254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95058 ImplicationChecksByTransitivity, 186227.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred in iteration=49, InterpolantAutomatonStates: 2737, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 143.2ms AutomataMinimizationTime, 50 MinimizatonAttempts, 2689 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 502.0ms SsaConstructionTime, 3120.3ms SatisfiabilityAnalysisTime, 73830.5ms InterpolantComputationTime, 12474 NumberOfCodeBlocks, 12410 NumberOfCodeBlocksAsserted, 1250 NumberOfCheckSat, 12378 ConstructedInterpolants, 0 QuantifiedInterpolants, 33219 SizeOfPredicates, 2 NumberOfNonLiveVariables, 18046 ConjunctsInSsa, 2024 ConjunctsInUnsatCore, 96 InterpolantComputations, 4 PerfectInterpolantSequences, 128405/338953 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...