/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 SingleStatement --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:22:45,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:22:45,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:22:45,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:22:45,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:22:45,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:22:45,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:22:45,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:22:45,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:22:45,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:22:45,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:22:45,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:22:45,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:22:45,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:22:45,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:22:45,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:22:45,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:22:45,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:22:45,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:22:45,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:22:45,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:22:45,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:22:45,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:22:45,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:22:45,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:22:45,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:22:45,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:22:45,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:22:45,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:22:45,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:22:45,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:22:45,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:22:45,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:22:45,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:22:45,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:22:45,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:22:45,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:22:45,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:22:45,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:22:45,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:22:45,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:22:45,897 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 [2020-09-25 02:22:45,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:22:45,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:22:45,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:22:45,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:22:45,925 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:22:45,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:22:45,925 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:22:45,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:22:45,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:22:45,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:22:45,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:22:45,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:22:45,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:22:45,927 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:22:45,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:22:45,927 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:22:45,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:22:45,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:22:45,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:22:45,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:22:45,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:22:45,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:22:45,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:22:45,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:22:45,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:22:45,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:22:45,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:22:45,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:22:45,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:22:45,931 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 -> SingleStatement 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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=true; [2020-09-25 02:22:46,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:22:46,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:22:46,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:22:46,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:22:46,399 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:22:46,400 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 02:22:46,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c94a9b17/912e2e26d06d4ada83383c7faf06e5de/FLAG30699dee6 [2020-09-25 02:22:47,251 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:22:47,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 02:22:47,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c94a9b17/912e2e26d06d4ada83383c7faf06e5de/FLAG30699dee6 [2020-09-25 02:22:47,310 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c94a9b17/912e2e26d06d4ada83383c7faf06e5de [2020-09-25 02:22:47,322 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:22:47,328 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:22:47,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:22:47,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:22:47,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:22:47,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:22:47" (1/1) ... [2020-09-25 02:22:47,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d7d7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:47, skipping insertion in model container [2020-09-25 02:22:47,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:22:47" (1/1) ... [2020-09-25 02:22:47,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:22:47,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:22:48,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:22:48,624 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:22:49,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:22:49,111 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:22:49,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:49 WrapperNode [2020-09-25 02:22:49,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:22:49,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:22:49,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:22:49,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:22:49,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:49" (1/1) ... [2020-09-25 02:22:49,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:49" (1/1) ... [2020-09-25 02:22:49,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:49" (1/1) ... [2020-09-25 02:22:49,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:49" (1/1) ... [2020-09-25 02:22:49,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:49" (1/1) ... [2020-09-25 02:22:49,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:49" (1/1) ... [2020-09-25 02:22:49,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:49" (1/1) ... [2020-09-25 02:22:49,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:22:49,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:22:49,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:22:49,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:22:49,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:49" (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 [2020-09-25 02:22:49,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:22:49,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:22:49,443 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:22:49,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:22:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:22:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 02:22:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 02:22:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 02:22:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 02:22:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:22:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:22:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 02:22:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 02:22:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 02:22:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 02:22:49,449 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 02:22:49,450 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 02:22:49,450 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 02:22:49,450 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 02:22:49,451 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:22:49,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:22:49,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:22:52,753 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:22:52,754 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:22:52,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:22:52 BoogieIcfgContainer [2020-09-25 02:22:52,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:22:52,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:22:52,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:22:52,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:22:52,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:22:47" (1/3) ... [2020-09-25 02:22:52,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3271e87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:22:52, skipping insertion in model container [2020-09-25 02:22:52,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:22:49" (2/3) ... [2020-09-25 02:22:52,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3271e87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:22:52, skipping insertion in model container [2020-09-25 02:22:52,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:22:52" (3/3) ... [2020-09-25 02:22:52,780 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 02:22:52,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:22:52,805 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:22:52,828 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:22:52,871 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:22:52,871 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:22:52,871 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:22:52,872 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:22:52,872 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:22:52,872 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:22:52,872 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:22:52,872 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:22:52,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states. [2020-09-25 02:22:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2020-09-25 02:22:52,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:22:53,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:22:53,001 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:22:53,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:22:53,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1035850514, now seen corresponding path program 1 times [2020-09-25 02:22:53,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:22:53,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061626967] [2020-09-25 02:22:53,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:22:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:22:54,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:55,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:56,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:56,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:57,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:57,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:58,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:22:58,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:22:58,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 927 [2020-09-25 02:22:58,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 02:22:58,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 02:22:58,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:22:58,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:22:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 277 [2020-09-25 02:22:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-25 02:22:58,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:23:00,577 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-09-25 02:23:00,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:23:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:23:00,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:00,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:23:00,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 02:23:00,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:23:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 02:23:00,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:23:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:23:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:23:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:23:00,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:23:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:23:01,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061626967] [2020-09-25 02:23:01,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:23:01,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:23:01,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759026690] [2020-09-25 02:23:01,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:23:01,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:23:01,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:23:01,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:23:01,589 INFO L87 Difference]: Start difference. First operand 2018 states. Second operand 5 states. [2020-09-25 02:23:16,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:23:16,999 INFO L93 Difference]: Finished difference Result 5340 states and 7151 transitions. [2020-09-25 02:23:17,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:23:17,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 920 [2020-09-25 02:23:17,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:23:17,047 INFO L225 Difference]: With dead ends: 5340 [2020-09-25 02:23:17,048 INFO L226 Difference]: Without dead ends: 3332 [2020-09-25 02:23:17,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:23:17,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2020-09-25 02:23:17,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 3330. [2020-09-25 02:23:17,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3330 states. [2020-09-25 02:23:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 4198 transitions. [2020-09-25 02:23:17,282 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 4198 transitions. Word has length 920 [2020-09-25 02:23:17,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:23:17,284 INFO L479 AbstractCegarLoop]: Abstraction has 3330 states and 4198 transitions. [2020-09-25 02:23:17,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:23:17,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 4198 transitions. [2020-09-25 02:23:17,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2020-09-25 02:23:17,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:23:17,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:23:17,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:23:17,319 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:23:17,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:23:17,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1948925643, now seen corresponding path program 1 times [2020-09-25 02:23:17,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:23:17,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589832337] [2020-09-25 02:23:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:23:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:23:17,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:18,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:18,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:19,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:19,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:19,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:20,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:21,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:22,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:22,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:23:22,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 929 [2020-09-25 02:23:22,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:23:22,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5135 [2020-09-25 02:23:22,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:23:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:23:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 279 [2020-09-25 02:23:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-09-25 02:23:22,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 02:23:24,167 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-09-25 02:23:24,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:23:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:23:24,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:23:24,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:23:24,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 02:23:24,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:23:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 02:23:24,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:23:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:23:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:23:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:23:24,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:23:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:23:25,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589832337] [2020-09-25 02:23:25,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:23:25,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:23:25,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443188479] [2020-09-25 02:23:25,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:23:25,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:23:25,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:23:25,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:23:25,737 INFO L87 Difference]: Start difference. First operand 3330 states and 4198 transitions. Second operand 5 states. [2020-09-25 02:23:38,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:23:38,972 INFO L93 Difference]: Finished difference Result 9194 states and 11708 transitions. [2020-09-25 02:23:38,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:23:38,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 922 [2020-09-25 02:23:38,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:23:39,002 INFO L225 Difference]: With dead ends: 9194 [2020-09-25 02:23:39,002 INFO L226 Difference]: Without dead ends: 6252 [2020-09-25 02:23:39,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:23:39,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6252 states. [2020-09-25 02:23:39,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6252 to 6250. [2020-09-25 02:23:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6250 states. [2020-09-25 02:23:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6250 states to 6250 states and 7922 transitions. [2020-09-25 02:23:39,263 INFO L78 Accepts]: Start accepts. Automaton has 6250 states and 7922 transitions. Word has length 922 [2020-09-25 02:23:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:23:39,267 INFO L479 AbstractCegarLoop]: Abstraction has 6250 states and 7922 transitions. [2020-09-25 02:23:39,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:23:39,267 INFO L276 IsEmpty]: Start isEmpty. Operand 6250 states and 7922 transitions. [2020-09-25 02:23:39,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 925 [2020-09-25 02:23:39,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:23:39,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:23:39,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:23:39,294 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:23:39,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:23:39,295 INFO L82 PathProgramCache]: Analyzing trace with hash 59373839, now seen corresponding path program 1 times [2020-09-25 02:23:39,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:23:39,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673509163] [2020-09-25 02:23:39,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:23:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:23:39,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking...