/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test22-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:43:26,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:43:26,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:43:26,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:43:26,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:43:26,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:43:26,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:43:26,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:43:26,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:43:26,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:43:26,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:43:26,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:43:26,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:43:26,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:43:26,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:43:26,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:43:26,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:43:26,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:43:26,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:43:26,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:43:26,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:43:26,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:43:26,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:43:26,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:43:26,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:43:26,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:43:26,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:43:26,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:43:26,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:43:26,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:43:26,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:43:26,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:43:26,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:43:26,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:43:26,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:43:26,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:43:26,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:43:26,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:43:26,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:43:26,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:43:26,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:43:26,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:43:26,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:43:26,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:43:26,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:43:26,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:43:26,841 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:43:26,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:43:26,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:43:26,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:43:26,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:43:26,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:43:26,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:43:26,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:43:26,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:43:26,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:43:26,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:43:26,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:43:26,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:43:26,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:43:26,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:43:26,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:43:26,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:43:26,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:43:26,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:43:26,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:43:26,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:43:26,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:43:26,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:43:26,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:43:26,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:43:26,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:43:27,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:43:27,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:43:27,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:43:27,181 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:43:27,182 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:43:27,183 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-1.c [2020-10-12 15:43:27,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69a618495/7a156758511448f1ac653633ce025871/FLAG0911709cf [2020-10-12 15:43:27,715 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:43:27,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test22-1.c [2020-10-12 15:43:27,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69a618495/7a156758511448f1ac653633ce025871/FLAG0911709cf [2020-10-12 15:43:28,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69a618495/7a156758511448f1ac653633ce025871 [2020-10-12 15:43:28,099 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:43:28,101 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:43:28,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:43:28,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:43:28,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:43:28,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:43:28" (1/1) ... [2020-10-12 15:43:28,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fc81bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:28, skipping insertion in model container [2020-10-12 15:43:28,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:43:28" (1/1) ... [2020-10-12 15:43:28,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:43:28,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:43:28,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:43:28,336 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:43:28,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:43:28,375 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:43:28,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:28 WrapperNode [2020-10-12 15:43:28,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:43:28,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:43:28,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:43:28,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:43:28,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:28" (1/1) ... [2020-10-12 15:43:28,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:28" (1/1) ... [2020-10-12 15:43:28,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:28" (1/1) ... [2020-10-12 15:43:28,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:28" (1/1) ... [2020-10-12 15:43:28,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:28" (1/1) ... [2020-10-12 15:43:28,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:28" (1/1) ... [2020-10-12 15:43:28,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:28" (1/1) ... [2020-10-12 15:43:28,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:43:28,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:43:28,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:43:28,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:43:28,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 15:43:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:43:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:43:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-12 15:43:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-10-12 15:43:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-12 15:43:28,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:43:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:43:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:43:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 15:43:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 15:43:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:43:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-10-12 15:43:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 15:43:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:43:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:43:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:43:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:43:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-12 15:43:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:43:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:43:28,917 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:43:28,917 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 15:43:28,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:43:28 BoogieIcfgContainer [2020-10-12 15:43:28,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:43:28,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:43:28,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:43:28,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:43:28,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:43:28" (1/3) ... [2020-10-12 15:43:28,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa8d3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:43:28, skipping insertion in model container [2020-10-12 15:43:28,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:28" (2/3) ... [2020-10-12 15:43:28,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa8d3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:43:28, skipping insertion in model container [2020-10-12 15:43:28,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:43:28" (3/3) ... [2020-10-12 15:43:28,933 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-1.c [2020-10-12 15:43:28,944 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:43:28,952 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:43:28,966 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:43:28,991 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:43:28,991 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:43:28,992 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:43:28,992 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:43:28,992 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:43:28,992 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:43:28,992 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:43:28,992 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:43:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-12 15:43:29,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:43:29,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:29,021 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-12 15:43:29,022 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:29,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:29,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1345538594, now seen corresponding path program 1 times [2020-10-12 15:43:29,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:29,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385853440] [2020-10-12 15:43:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:29,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:29,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:29,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 15:43:29,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:29,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-12 15:43:29,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 15:43:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:29,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:43:29,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:29,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:29,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:29,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:29,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:29,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:43:29,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:29,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:29,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:29,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:29,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:29,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:43:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:29,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:29,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:29,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:29,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:29,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:43:29,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:29,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:29,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:29,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:29,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:43:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:29,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:29,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:29,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:29,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:43:29,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:29,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:29,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:43:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:29,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:29,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:29,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:29,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:29,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:43:29,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:29,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:29,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 15:43:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:29,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:29,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:29,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:29,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:29,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:43:29,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:29,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:43:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:29,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:29,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:29,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:29,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:43:29,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:43:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:29,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 15:43:29,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385853440] [2020-10-12 15:43:29,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:43:29,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:43:29,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182934523] [2020-10-12 15:43:29,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:43:29,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:29,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:43:29,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:43:29,673 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-10-12 15:43:29,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:29,905 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-10-12 15:43:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:43:29,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-12 15:43:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:29,917 INFO L225 Difference]: With dead ends: 49 [2020-10-12 15:43:29,917 INFO L226 Difference]: Without dead ends: 31 [2020-10-12 15:43:29,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:43:29,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-12 15:43:29,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-12 15:43:29,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 15:43:29,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-12 15:43:29,973 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2020-10-12 15:43:29,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:29,977 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-12 15:43:29,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:43:29,977 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-12 15:43:29,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:43:29,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:29,980 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2020-10-12 15:43:29,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:43:29,981 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:29,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:29,982 INFO L82 PathProgramCache]: Analyzing trace with hash -213153012, now seen corresponding path program 1 times [2020-10-12 15:43:29,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:29,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52815059] [2020-10-12 15:43:29,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:30,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:31,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:31,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:43:31,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:43:31,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1185 [2020-10-12 15:43:31,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:31,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:43:31,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:43:31,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:43:31,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:43:31,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:31,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:31,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:31,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:31,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:31,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:43:31,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:31,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:31,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:31,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:31,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:31,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:43:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:31,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:31,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:31,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:31,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:31,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:43:31,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:31,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:31,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:43:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:31,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:31,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:31,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:31,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:31,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:43:31,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:43:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:43:31,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:31,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:43:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:31,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:31,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:31,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:31,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:31,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:43:31,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:43:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:31,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:31,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 15:43:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:31,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:31,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:31,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:31,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:43:31,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:43:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:31,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:31,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 15:43:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:31,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:31,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:31,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:31,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:31,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:43:31,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:43:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:31,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:31,512 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:43:31,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52815059] [2020-10-12 15:43:31,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:43:31,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:43:31,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19386781] [2020-10-12 15:43:31,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:43:31,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:31,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:43:31,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:43:31,517 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 12 states. [2020-10-12 15:43:32,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:32,301 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2020-10-12 15:43:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:43:32,301 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-12 15:43:32,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:32,305 INFO L225 Difference]: With dead ends: 70 [2020-10-12 15:43:32,306 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 15:43:32,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:43:32,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 15:43:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 43. [2020-10-12 15:43:32,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 15:43:32,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2020-10-12 15:43:32,323 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 38 [2020-10-12 15:43:32,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:32,324 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2020-10-12 15:43:32,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:43:32,324 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2020-10-12 15:43:32,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:43:32,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:32,326 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1] [2020-10-12 15:43:32,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:43:32,327 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:32,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:32,327 INFO L82 PathProgramCache]: Analyzing trace with hash 5701706, now seen corresponding path program 1 times [2020-10-12 15:43:32,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:32,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512334524] [2020-10-12 15:43:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:32,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:33,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:33,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:43:33,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:43:33,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-12 15:43:33,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:43:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:43:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 15:43:33,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:33,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:33,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:33,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:33,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:33,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:33,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:43:33,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:43:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:33,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:43:33,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:33,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:43:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:33,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:33,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:33,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:33,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:33,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:43:33,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:43:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:43:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:33,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:43:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:33,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:33,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:33,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:33,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:33,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:43:33,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:43:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:33,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:33,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:33,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:43:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:33,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:33,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:33,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:33,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:33,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:43:33,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:43:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:33,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:33,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 15:43:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:33,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:33,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:33,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:33,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:33,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:43:33,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:33,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:43:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:33,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 15:43:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:33,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:33,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:33,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:33,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:43:33,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:43:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:33,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:43:33,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512334524] [2020-10-12 15:43:33,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:43:33,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:43:33,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641871432] [2020-10-12 15:43:33,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:43:33,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:33,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:43:33,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:43:33,256 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand 14 states. [2020-10-12 15:43:34,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:34,195 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2020-10-12 15:43:34,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:43:34,196 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-12 15:43:34,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:34,197 INFO L225 Difference]: With dead ends: 70 [2020-10-12 15:43:34,198 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 15:43:34,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:43:34,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 15:43:34,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-10-12 15:43:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 15:43:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2020-10-12 15:43:34,212 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 38 [2020-10-12 15:43:34,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:34,212 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2020-10-12 15:43:34,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:43:34,213 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2020-10-12 15:43:34,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:43:34,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:34,214 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1] [2020-10-12 15:43:34,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:43:34,215 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:34,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:34,215 INFO L82 PathProgramCache]: Analyzing trace with hash -722626102, now seen corresponding path program 2 times [2020-10-12 15:43:34,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:34,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798437481] [2020-10-12 15:43:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:34,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:34,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:43:34,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:43:34,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-12 15:43:34,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:34,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:43:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:43:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 15:43:34,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:34,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:34,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:34,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:34,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:34,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:34,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:43:34,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:34,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:43:34,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:34,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:43:34,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:34,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:43:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:34,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:34,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:34,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:34,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:43:34,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:43:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:43:34,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:34,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:43:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:34,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:34,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:34,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:34,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:34,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:43:34,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:43:34,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:34,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:34,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:34,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:43:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:34,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:34,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:34,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:34,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:34,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:43:34,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:34,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:43:34,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:34,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:34,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:34,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 15:43:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:34,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:34,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:34,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:34,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:34,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:43:34,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:34,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:43:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:34,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:34,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 15:43:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:34,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:34,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:34,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:34,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:34,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:43:34,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:34,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:34,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:43:34,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:34,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:43:34,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798437481] [2020-10-12 15:43:34,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:43:34,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:43:34,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539876528] [2020-10-12 15:43:34,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:43:34,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:34,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:43:34,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:43:34,994 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 14 states. [2020-10-12 15:43:35,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:35,981 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-12 15:43:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:43:35,982 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-12 15:43:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:35,983 INFO L225 Difference]: With dead ends: 65 [2020-10-12 15:43:35,983 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 15:43:35,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:43:35,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 15:43:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-10-12 15:43:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 15:43:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-12 15:43:35,997 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 38 [2020-10-12 15:43:35,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:35,997 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-12 15:43:35,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:43:35,997 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-12 15:43:35,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:43:35,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:35,999 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1] [2020-10-12 15:43:35,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:43:35,999 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:36,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:36,000 INFO L82 PathProgramCache]: Analyzing trace with hash -503771384, now seen corresponding path program 3 times [2020-10-12 15:43:36,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:36,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659383475] [2020-10-12 15:43:36,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:36,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:36,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:43:36,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:43:36,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-12 15:43:36,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:36,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:43:36,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:43:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:43:36,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:36,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:36,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:36,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:36,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:36,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:36,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:43:36,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:36,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:36,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:36,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:43:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:36,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:36,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:36,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:36,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:43:36,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:36,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:36,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:43:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:36,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:36,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:36,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:36,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:36,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:43:36,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:43:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:43:36,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:36,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:43:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:36,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:36,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:36,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:36,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:36,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:43:36,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:36,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:43:36,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:36,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:36,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:36,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 15:43:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:36,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:36,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:36,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:36,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:36,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:43:36,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:36,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:43:36,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:36,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:36,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:36,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 15:43:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:36,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:36,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:36,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:36,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:36,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:43:36,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:43:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:36,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:43:36,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659383475] [2020-10-12 15:43:36,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:43:36,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:43:36,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077618932] [2020-10-12 15:43:36,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:43:36,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:36,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:43:36,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:43:36,772 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 12 states. [2020-10-12 15:43:37,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:37,365 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-12 15:43:37,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:43:37,366 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-12 15:43:37,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:37,367 INFO L225 Difference]: With dead ends: 60 [2020-10-12 15:43:37,368 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 15:43:37,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:43:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 15:43:37,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2020-10-12 15:43:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 15:43:37,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-10-12 15:43:37,382 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 38 [2020-10-12 15:43:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:37,382 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-10-12 15:43:37,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:43:37,383 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-10-12 15:43:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:43:37,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:37,384 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2020-10-12 15:43:37,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:43:37,384 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:37,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:37,385 INFO L82 PathProgramCache]: Analyzing trace with hash -655504409, now seen corresponding path program 1 times [2020-10-12 15:43:37,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:37,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194360429] [2020-10-12 15:43:37,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:37,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:37,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:37,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:37,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 15:43:37,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:43:37,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-10-12 15:43:37,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:37,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:43:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:43:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:43:37,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:38,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:38,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:38,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:38,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:38,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:38,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:43:38,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:38,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:38,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:38,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:38,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:38,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:43:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:38,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:38,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:38,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:38,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:43:38,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:38,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:38,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:38,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:38,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:38,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:43:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:38,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:38,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:38,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:38,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:38,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:43:38,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:43:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:43:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:38,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:43:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:38,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:38,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:38,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:38,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:38,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:43:38,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:43:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:38,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:38,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:38,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 15:43:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:38,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:38,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:38,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:38,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:38,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:43:38,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:43:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:38,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:38,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 15:43:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:38,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:38,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:38,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:38,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:38,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:43:38,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:43:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:38,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:43:38,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194360429] [2020-10-12 15:43:38,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:43:38,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:43:38,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522734381] [2020-10-12 15:43:38,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:43:38,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:38,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:43:38,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:43:38,292 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 13 states. [2020-10-12 15:43:38,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:38,983 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-12 15:43:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:43:38,984 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-12 15:43:38,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:38,985 INFO L225 Difference]: With dead ends: 62 [2020-10-12 15:43:38,985 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 15:43:38,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:43:38,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 15:43:38,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2020-10-12 15:43:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 15:43:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-12 15:43:38,996 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 40 [2020-10-12 15:43:38,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:38,996 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-12 15:43:38,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:43:38,996 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-12 15:43:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:43:38,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:38,998 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 1] [2020-10-12 15:43:38,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:43:38,998 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:38,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:38,999 INFO L82 PathProgramCache]: Analyzing trace with hash -766885661, now seen corresponding path program 1 times [2020-10-12 15:43:38,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:38,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39189444] [2020-10-12 15:43:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:39,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:39,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:39,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 15:43:39,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:43:39,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-12 15:43:39,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:43:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:43:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:43:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:39,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:39,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:39,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:39,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:39,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:39,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:43:39,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:39,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:39,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:39,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:43:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:39,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:39,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:39,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:39,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:39,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:43:39,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:39,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:43:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:39,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:39,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:39,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:39,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:39,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:43:39,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:43:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:43:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:39,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:43:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:39,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:39,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:39,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:39,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:39,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:43:39,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:43:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:39,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:39,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 15:43:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:39,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:39,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:39,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:39,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:43:39,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:43:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:39,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:39,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:39,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 15:43:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:39,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:39,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:39,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:39,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:39,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:43:39,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:43:39,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:39,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:39,698 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:43:39,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39189444] [2020-10-12 15:43:39,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:43:39,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:43:39,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777468001] [2020-10-12 15:43:39,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:43:39,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:39,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:43:39,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:43:39,702 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 13 states. [2020-10-12 15:43:40,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:40,577 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2020-10-12 15:43:40,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:43:40,577 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-12 15:43:40,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:40,578 INFO L225 Difference]: With dead ends: 64 [2020-10-12 15:43:40,579 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 15:43:40,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:43:40,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 15:43:40,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 40. [2020-10-12 15:43:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 15:43:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-12 15:43:40,599 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 40 [2020-10-12 15:43:40,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:40,601 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-12 15:43:40,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:43:40,602 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-12 15:43:40,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 15:43:40,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:40,603 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-12 15:43:40,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:43:40,604 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:40,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:40,604 INFO L82 PathProgramCache]: Analyzing trace with hash -553434622, now seen corresponding path program 2 times [2020-10-12 15:43:40,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:40,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696223868] [2020-10-12 15:43:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:40,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:41,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:41,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:41,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:41,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:43:41,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:43:41,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-10-12 15:43:41,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:43:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:43:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 15:43:41,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:41,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:41,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:41,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:41,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:41,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:43:41,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:41,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:41,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:43:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:41,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:41,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:41,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:41,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:41,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:43:41,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:41,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:41,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:41,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:41,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:43:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:41,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:41,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:41,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:41,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:41,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:43:41,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:41,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:43:41,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:41,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:43:41,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:43:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:41,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:41,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:41,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:41,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:41,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:43:41,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:41,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:43:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:41,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:41,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 15:43:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:41,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:41,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:41,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:41,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:41,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:43:41,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:43:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:41,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:41,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 15:43:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:41,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:41,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:41,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:41,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:43:41,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:41,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:43:41,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:41,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:41,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 15:43:42,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696223868] [2020-10-12 15:43:42,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:43:42,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:43:42,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788397214] [2020-10-12 15:43:42,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:43:42,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:42,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:43:42,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:43:42,016 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 17 states. [2020-10-12 15:43:42,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:42,895 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-10-12 15:43:42,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:43:42,896 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2020-10-12 15:43:42,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:42,898 INFO L225 Difference]: With dead ends: 56 [2020-10-12 15:43:42,898 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 15:43:42,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:43:42,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 15:43:42,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-12 15:43:42,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 15:43:42,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-10-12 15:43:42,911 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 42 [2020-10-12 15:43:42,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:42,911 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-10-12 15:43:42,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:43:42,911 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-10-12 15:43:42,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 15:43:42,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:42,915 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2020-10-12 15:43:42,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:43:42,915 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:42,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:42,916 INFO L82 PathProgramCache]: Analyzing trace with hash -216635394, now seen corresponding path program 2 times [2020-10-12 15:43:42,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:42,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392236353] [2020-10-12 15:43:42,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:42,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:43,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:43,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:43,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:43:43,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:43:43,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 838 [2020-10-12 15:43:43,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:43:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:43:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 15:43:43,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:43,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:43,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:43,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:43,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:43,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:43:43,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:43,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:43,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:43:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:43,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:43,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:43,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:43,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:43,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:43:43,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:43,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:43,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:43:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:43,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:43,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:43,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:43,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:43,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:43:43,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:43:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:43,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:43:43,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:44,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:43:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:44,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:44,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:44,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:44,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:44,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:43:44,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:44,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:43:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:44,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 15:43:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:44,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:44,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:44,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:44,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:44,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:43:44,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:44,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:43:44,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:44,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:44,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:44,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 15:43:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:44,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:44,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:44,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:44,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:44,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:43:44,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:43:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:44,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 15:43:44,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392236353] [2020-10-12 15:43:44,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:43:44,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:43:44,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182699158] [2020-10-12 15:43:44,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:43:44,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:44,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:43:44,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:43:44,081 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 17 states. [2020-10-12 15:43:44,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:44,877 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-12 15:43:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:43:44,878 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2020-10-12 15:43:44,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:44,879 INFO L225 Difference]: With dead ends: 38 [2020-10-12 15:43:44,879 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 15:43:44,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:43:44,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 15:43:44,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 15:43:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 15:43:44,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 15:43:44,882 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-10-12 15:43:44,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:44,882 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 15:43:44,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:43:44,882 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 15:43:44,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 15:43:44,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:43:44,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 15:43:45,198 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2020-10-12 15:43:45,434 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2020-10-12 15:43:45,613 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 27 [2020-10-12 15:43:45,779 INFO L268 CegarLoopResult]: For program point initEXIT(lines 11 18) no Hoare annotation was computed. [2020-10-12 15:43:45,780 INFO L264 CegarLoopResult]: At program point initENTRY(lines 11 18) the Hoare annotation is: (or (= |~#d1~0.base| |~#d2~0.base|) (= |#memory_int| |old(#memory_int)|)) [2020-10-12 15:43:45,780 INFO L268 CegarLoopResult]: For program point initFINAL(lines 11 18) no Hoare annotation was computed. [2020-10-12 15:43:45,780 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-12 15:43:45,780 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |old(#length)| |#length|) (= |old(~#d1~0.base)| |~#d1~0.base|) (= |old(~#d1~0.offset)| |~#d1~0.offset|) (= |old(~#d2~0.offset)| |~#d2~0.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |old(~#d2~0.base)| |~#d2~0.base|)) [2020-10-12 15:43:45,780 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 15:43:45,780 INFO L268 CegarLoopResult]: For program point get_dummyFINAL(lines 20 23) no Hoare annotation was computed. [2020-10-12 15:43:45,780 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 20 23) the Hoare annotation is: true [2020-10-12 15:43:45,780 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-12 15:43:45,781 INFO L268 CegarLoopResult]: For program point get_dummyEXIT(lines 20 23) no Hoare annotation was computed. [2020-10-12 15:43:45,781 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 15:43:45,781 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (not (= |~#d1~0.base| |~#d2~0.base|)) [2020-10-12 15:43:45,781 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 15:43:45,781 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 15:43:45,781 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-10-12 15:43:45,781 INFO L268 CegarLoopResult]: For program point L35-2(lines 35 44) no Hoare annotation was computed. [2020-10-12 15:43:45,781 INFO L264 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: (or (and (= |~#d1~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d1~0.offset|)) (= |~#d1~0.base| |~#d2~0.base|) (and (= main_~pd1~0.offset |~#d2~0.offset|) (= |~#d2~0.base| main_~pd1~0.base))) [2020-10-12 15:43:45,781 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-10-12 15:43:45,782 INFO L268 CegarLoopResult]: For program point L35-4(lines 35 44) no Hoare annotation was computed. [2020-10-12 15:43:45,782 INFO L264 CegarLoopResult]: At program point L33-3(line 33) the Hoare annotation is: (let ((.cse0 (= main_~pd2~0.offset main_~pd1~0.offset))) (or (and .cse0 (= main_~pd1~0.offset |~#d2~0.offset|) (= |~#d2~0.base| main_~pd1~0.base)) (not (= main_~pd2~0.base main_~pd1~0.base)) (= |~#d1~0.base| |~#d2~0.base|) (and (= |~#d1~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d1~0.offset|) .cse0))) [2020-10-12 15:43:45,783 INFO L268 CegarLoopResult]: For program point L33-4(line 33) no Hoare annotation was computed. [2020-10-12 15:43:45,783 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 30 50) no Hoare annotation was computed. [2020-10-12 15:43:45,783 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 30 50) no Hoare annotation was computed. [2020-10-12 15:43:45,783 INFO L264 CegarLoopResult]: At program point L42(lines 31 50) the Hoare annotation is: (= |~#d1~0.base| |~#d2~0.base|) [2020-10-12 15:43:45,784 INFO L268 CegarLoopResult]: For program point L38-1(lines 38 40) no Hoare annotation was computed. [2020-10-12 15:43:45,784 INFO L264 CegarLoopResult]: At program point L38-3(lines 38 40) the Hoare annotation is: (let ((.cse0 (= main_~pd2~0.offset main_~pd1~0.offset)) (.cse1 (= main_~pd2~0.offset main_~pa~0.offset)) (.cse2 (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (.cse3 (= main_~pd2~0.base main_~pa~0.base)) (.cse4 (= main_~pd2~0.base main_~pd1~0.base))) (or (= |~#d1~0.base| |~#d2~0.base|) (and .cse0 (= main_~pd1~0.offset |~#d2~0.offset|) (= |~#d2~0.base| main_~pd1~0.base) .cse1 .cse2 .cse3 .cse4) (and (= |~#d1~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d1~0.offset|) .cse0 .cse1 .cse2 .cse3 .cse4))) [2020-10-12 15:43:45,784 INFO L264 CegarLoopResult]: At program point L38-4(lines 38 40) the Hoare annotation is: (let ((.cse0 (= main_~pd2~0.offset main_~pd1~0.offset)) (.cse1 (= (select (select |#memory_int| main_~pd2~0.base) main_~pd2~0.offset) main_~i~0)) (.cse2 (= main_~pd2~0.offset main_~pa~0.offset)) (.cse3 (= main_~pd2~0.base main_~pa~0.base)) (.cse4 (= main_~pd2~0.base main_~pd1~0.base))) (or (and (= |~#d1~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d1~0.offset|) .cse0 .cse1 .cse2 .cse3 .cse4) (= |~#d1~0.base| |~#d2~0.base|) (and .cse0 (= main_~pd1~0.offset |~#d2~0.offset|) (= |~#d2~0.base| main_~pd1~0.base) .cse1 .cse2 .cse3 .cse4))) [2020-10-12 15:43:45,784 INFO L271 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-10-12 15:43:45,784 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2020-10-12 15:43:45,785 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 30 50) the Hoare annotation is: (or (= |~#d1~0.base| |~#d2~0.base|) (= |#memory_int| |old(#memory_int)|)) [2020-10-12 15:43:45,785 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-10-12 15:43:45,785 INFO L268 CegarLoopResult]: For program point L41-1(lines 41 43) no Hoare annotation was computed. [2020-10-12 15:43:45,785 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-12 15:43:45,785 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 25 28) the Hoare annotation is: true [2020-10-12 15:43:45,785 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 25 28) no Hoare annotation was computed. [2020-10-12 15:43:45,785 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 25 28) no Hoare annotation was computed. [2020-10-12 15:43:45,803 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-12 15:43:45,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-12 15:43:45,813 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-12 15:43:45,814 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-12 15:43:45,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:43:45 BoogieIcfgContainer [2020-10-12 15:43:45,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:43:45,822 INFO L168 Benchmark]: Toolchain (without parser) took 17720.42 ms. Allocated memory was 137.4 MB in the beginning and 450.4 MB in the end (delta: 313.0 MB). Free memory was 99.8 MB in the beginning and 368.3 MB in the end (delta: -268.5 MB). Peak memory consumption was 330.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:45,824 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-12 15:43:45,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.50 ms. Allocated memory is still 137.4 MB. Free memory was 99.8 MB in the beginning and 89.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:45,831 INFO L168 Benchmark]: Boogie Preprocessor took 122.47 ms. Allocated memory was 137.4 MB in the beginning and 199.2 MB in the end (delta: 61.9 MB). Free memory was 89.2 MB in the beginning and 176.4 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:45,832 INFO L168 Benchmark]: RCFGBuilder took 422.45 ms. Allocated memory is still 199.2 MB. Free memory was 176.4 MB in the beginning and 157.1 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:45,835 INFO L168 Benchmark]: TraceAbstraction took 16893.94 ms. Allocated memory was 199.2 MB in the beginning and 450.4 MB in the end (delta: 251.1 MB). Free memory was 156.1 MB in the beginning and 368.3 MB in the end (delta: -212.2 MB). Peak memory consumption was 325.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:45,846 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.50 ms. Allocated memory is still 137.4 MB. Free memory was 99.8 MB in the beginning and 89.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.47 ms. Allocated memory was 137.4 MB in the beginning and 199.2 MB in the end (delta: 61.9 MB). Free memory was 89.2 MB in the beginning and 176.4 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 422.45 ms. Allocated memory is still 199.2 MB. Free memory was 176.4 MB in the beginning and 157.1 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16893.94 ms. Allocated memory was 199.2 MB in the beginning and 450.4 MB in the end (delta: 251.1 MB). Free memory was 156.1 MB in the beginning and 368.3 MB in the end (delta: -212.2 MB). Peak memory consumption was 325.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant [2020-10-12 15:43:45,860 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-12 15:43:45,860 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-12 15:43:45,865 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-12 15:43:45,866 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (d1 == d2 || ((((((pd2 == pd1 && pd1 == d2) && d2 == pd1) && pd2 == pa) && i <= unknown-#memory_int-unknown[pa][pa]) && pd2 == pa) && pd2 == pd1)) || ((((((d1 == pd1 && pd1 == d1) && pd2 == pd1) && pd2 == pa) && i <= unknown-#memory_int-unknown[pa][pa]) && pd2 == pa) && pd2 == pd1) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: d1 == d2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.8s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 212 SDtfs, 462 SDslu, 415 SDs, 0 SdLazy, 3282 SolverSat, 382 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 302 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 72 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 27 PreInvPairs, 39 NumberOfFragments, 208 HoareAnnotationTreeSize, 27 FomulaSimplifications, 34916 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 13 FomulaSimplificationsInter, 730 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 344 ConstructedInterpolants, 0 QuantifiedInterpolants, 54088 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 62/124 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...