/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/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:51:01,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:51:01,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:51:01,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:51:01,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:51:01,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:51:01,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:51:01,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:51:01,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:51:01,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:51:01,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:51:01,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:51:01,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:51:01,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:51:01,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:51:01,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:51:01,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:51:01,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:51:01,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:51:01,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:51:01,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:51:01,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:51:01,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:51:01,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:51:01,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:51:01,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:51:01,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:51:01,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:51:01,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:51:01,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:51:01,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:51:01,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:51:01,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:51:01,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:51:01,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:51:01,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:51:01,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:51:01,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:51:01,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:51:01,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:51:01,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:51:01,942 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 19:51:01,980 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:51:01,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:51:01,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:51:01,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:51:01,985 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:51:01,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:51:01,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:51:01,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:51:01,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:51:01,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:51:01,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:51:01,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:51:01,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:51:01,987 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:51:01,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:51:01,987 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:51:01,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:51:01,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:51:01,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:51:01,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:51:01,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:51:01,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:51:01,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:51:01,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:51:01,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:51:01,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:51:01,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:51:01,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:51:01,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:51:01,993 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 19:51:02,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:51:02,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:51:02,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:51:02,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:51:02,311 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:51:02,312 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:51:02,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fea67e2b/d7b405cf41644e7d9913f036f6e6ef3e/FLAGc50262128 [2020-10-12 19:51:03,329 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:51:03,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:51:03,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fea67e2b/d7b405cf41644e7d9913f036f6e6ef3e/FLAGc50262128 [2020-10-12 19:51:03,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fea67e2b/d7b405cf41644e7d9913f036f6e6ef3e [2020-10-12 19:51:03,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:51:03,656 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:51:03,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:51:03,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:51:03,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:51:03,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:51:03" (1/1) ... [2020-10-12 19:51:03,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6b7cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:51:03, skipping insertion in model container [2020-10-12 19:51:03,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:51:03" (1/1) ... [2020-10-12 19:51:03,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:51:04,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:51:07,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:51:07,791 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:51:10,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:51:10,218 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:51:10,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:51:10 WrapperNode [2020-10-12 19:51:10,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:51:10,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:51:10,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:51:10,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:51:10,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:51:10" (1/1) ... [2020-10-12 19:51:10,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:51:10" (1/1) ... [2020-10-12 19:51:10,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:51:10" (1/1) ... [2020-10-12 19:51:10,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:51:10" (1/1) ... [2020-10-12 19:51:10,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:51:10" (1/1) ... [2020-10-12 19:51:10,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:51:10" (1/1) ... [2020-10-12 19:51:10,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:51:10" (1/1) ... [2020-10-12 19:51:10,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:51:10,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:51:10,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:51:10,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:51:10,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:51:10" (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 19:51:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:51:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:51:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:51:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:51:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:51:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:51:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:51:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:51:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:51:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:51:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:51:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:51:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:51:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:51:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:51:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:51:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:51:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:51:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 19:51:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-12 19:51:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-12 19:51:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:51:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:51:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:51:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:51:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:51:21,400 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:51:21,400 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:51:21,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:51:21 BoogieIcfgContainer [2020-10-12 19:51:21,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:51:21,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:51:21,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:51:21,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:51:21,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:51:03" (1/3) ... [2020-10-12 19:51:21,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7ea67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:51:21, skipping insertion in model container [2020-10-12 19:51:21,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:51:10" (2/3) ... [2020-10-12 19:51:21,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7ea67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:51:21, skipping insertion in model container [2020-10-12 19:51:21,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:51:21" (3/3) ... [2020-10-12 19:51:21,427 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:51:21,438 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:51:21,448 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 37 error locations. [2020-10-12 19:51:21,463 INFO L251 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2020-10-12 19:51:21,501 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:51:21,501 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:51:21,501 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:51:21,501 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:51:21,501 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:51:21,502 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:51:21,502 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:51:21,502 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:51:21,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states. [2020-10-12 19:51:21,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 19:51:21,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:51:21,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1] [2020-10-12 19:51:21,634 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:51:21,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:51:21,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1922900108, now seen corresponding path program 1 times [2020-10-12 19:51:21,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:51:21,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660427416] [2020-10-12 19:51:21,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:51:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:22,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:22,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:23,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:23,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:23,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:24,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:27,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:27,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 19:51:27,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:51:27,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 19:51:27,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:51:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:51:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 19:51:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:51:33,444 WARN L193 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 1237 [2020-10-12 19:51:33,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:51:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:33,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:33,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:33,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:51:33,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:51:33,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 19:51:33,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:51:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:51:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:51:33,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:51:33,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660427416] [2020-10-12 19:51:33,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:51:33,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:51:33,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149923063] [2020-10-12 19:51:33,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:51:33,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:51:33,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:51:33,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:51:33,792 INFO L87 Difference]: Start difference. First operand 3859 states. Second operand 7 states. [2020-10-12 19:51:39,825 WARN L193 SmtUtils]: Spent 5.81 s on a formula simplification that was a NOOP. DAG size: 1241 [2020-10-12 19:52:42,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:52:42,961 INFO L93 Difference]: Finished difference Result 10623 states and 18459 transitions. [2020-10-12 19:52:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:52:42,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-12 19:52:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:52:43,026 INFO L225 Difference]: With dead ends: 10623 [2020-10-12 19:52:43,027 INFO L226 Difference]: Without dead ends: 8347 [2020-10-12 19:52:43,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:52:43,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8347 states. [2020-10-12 19:52:43,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8347 to 6183. [2020-10-12 19:52:43,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6183 states. [2020-10-12 19:52:43,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6183 states to 6183 states and 8598 transitions. [2020-10-12 19:52:43,364 INFO L78 Accepts]: Start accepts. Automaton has 6183 states and 8598 transitions. Word has length 120 [2020-10-12 19:52:43,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:52:43,365 INFO L479 AbstractCegarLoop]: Abstraction has 6183 states and 8598 transitions. [2020-10-12 19:52:43,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:52:43,365 INFO L276 IsEmpty]: Start isEmpty. Operand 6183 states and 8598 transitions. [2020-10-12 19:52:43,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 19:52:43,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:52:43,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1] [2020-10-12 19:52:43,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:52:43,392 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:52:43,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:52:43,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1259837283, now seen corresponding path program 1 times [2020-10-12 19:52:43,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:52:43,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107831260] [2020-10-12 19:52:43,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:52:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:43,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:43,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:44,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:44,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:45,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:48,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:48,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 19:52:48,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:52:48,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-12 19:52:48,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:52:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:52:48,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:52:48,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:52:54,848 WARN L193 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 1237 [2020-10-12 19:52:54,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:52:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:54,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:54,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:52:54,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:52:54,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 19:52:54,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:52:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:52:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:52:54,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:52:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:52:55,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107831260] [2020-10-12 19:52:55,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:52:55,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:52:55,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606592614] [2020-10-12 19:52:55,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:52:55,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:52:55,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:52:55,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:52:55,085 INFO L87 Difference]: Start difference. First operand 6183 states and 8598 transitions. Second operand 7 states. [2020-10-12 19:53:00,884 WARN L193 SmtUtils]: Spent 5.62 s on a formula simplification that was a NOOP. DAG size: 1241 [2020-10-12 19:54:05,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:54:05,608 INFO L93 Difference]: Finished difference Result 19329 states and 27994 transitions. [2020-10-12 19:54:05,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:54:05,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-10-12 19:54:05,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:54:05,684 INFO L225 Difference]: With dead ends: 19329 [2020-10-12 19:54:05,684 INFO L226 Difference]: Without dead ends: 16388 [2020-10-12 19:54:05,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:54:05,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16388 states. [2020-10-12 19:54:06,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16388 to 13106. [2020-10-12 19:54:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13106 states. [2020-10-12 19:54:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13106 states to 13106 states and 19128 transitions. [2020-10-12 19:54:06,266 INFO L78 Accepts]: Start accepts. Automaton has 13106 states and 19128 transitions. Word has length 121 [2020-10-12 19:54:06,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:54:06,267 INFO L479 AbstractCegarLoop]: Abstraction has 13106 states and 19128 transitions. [2020-10-12 19:54:06,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:54:06,267 INFO L276 IsEmpty]: Start isEmpty. Operand 13106 states and 19128 transitions. [2020-10-12 19:54:06,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 19:54:06,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:54:06,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1] [2020-10-12 19:54:06,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:54:06,300 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:54:06,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:54:06,300 INFO L82 PathProgramCache]: Analyzing trace with hash -261385623, now seen corresponding path program 1 times [2020-10-12 19:54:06,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:54:06,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547232649] [2020-10-12 19:54:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:54:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:54:06,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:06,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:07,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:07,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:08,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:09,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:10,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:10,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:10,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:11,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:54:11,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 19:54:11,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:54:11,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:54:11,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:54:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:54:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:54:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 19:54:11,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:54:18,404 WARN L193 SmtUtils]: Spent 6.66 s on a formula simplification that was a NOOP. DAG size: 1237 [2020-10-12 19:54:18,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:54:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:54:18,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:54:18,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:54:18,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:54:18,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:54:18,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-12 19:54:18,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:54:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:54:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:54:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:54:18,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:54:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:54:18,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547232649] [2020-10-12 19:54:18,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:54:18,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:54:18,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168074612] [2020-10-12 19:54:18,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:54:18,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:54:18,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:54:18,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:54:18,659 INFO L87 Difference]: Start difference. First operand 13106 states and 19128 transitions. Second operand 7 states. [2020-10-12 19:54:24,840 WARN L193 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 1241