/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:04:45,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:04:45,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:04:45,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:04:45,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:04:45,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:04:45,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:04:45,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:04:45,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:04:45,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:04:45,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:04:45,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:04:45,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:04:45,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:04:45,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:04:45,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:04:45,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:04:45,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:04:45,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:04:45,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:04:45,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:04:45,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:04:45,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:04:45,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:04:45,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:04:45,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:04:45,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:04:45,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:04:45,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:04:45,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:04:45,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:04:45,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:04:45,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:04:45,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:04:45,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:04:45,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:04:45,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:04:45,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:04:45,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:04:45,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:04:45,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:04:45,941 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 08:04:45,968 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:04:45,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:04:45,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:04:45,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:04:45,970 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:04:45,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:04:45,970 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:04:45,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:04:45,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:04:45,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:04:45,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:04:45,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:04:45,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:04:45,972 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:04:45,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:04:45,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:04:45,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:04:45,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:04:45,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:04:45,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:04:45,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:04:45,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:04:45,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:04:45,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:04:45,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:04:45,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:04:45,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:04:45,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:04:45,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:04:45,975 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 08:04:46,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:04:46,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:04:46,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:04:46,496 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:04:46,498 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:04:46,499 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 08:04:46,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e32c06cba/8bdeaa1c4ed6489288eef3b222904988/FLAGb041783ff [2020-09-25 08:04:47,262 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:04:47,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 08:04:47,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e32c06cba/8bdeaa1c4ed6489288eef3b222904988/FLAGb041783ff [2020-09-25 08:04:47,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e32c06cba/8bdeaa1c4ed6489288eef3b222904988 [2020-09-25 08:04:47,512 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:04:47,518 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:04:47,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:04:47,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:04:47,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:04:47,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:04:47" (1/1) ... [2020-09-25 08:04:47,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25989b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:47, skipping insertion in model container [2020-09-25 08:04:47,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:04:47" (1/1) ... [2020-09-25 08:04:47,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:04:47,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:04:48,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:04:48,351 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:04:48,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:04:48,898 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:04:48,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:48 WrapperNode [2020-09-25 08:04:48,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:04:48,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:04:48,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:04:48,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:04:48,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:48" (1/1) ... [2020-09-25 08:04:48,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:48" (1/1) ... [2020-09-25 08:04:48,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:48" (1/1) ... [2020-09-25 08:04:48,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:48" (1/1) ... [2020-09-25 08:04:48,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:48" (1/1) ... [2020-09-25 08:04:49,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:48" (1/1) ... [2020-09-25 08:04:49,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:48" (1/1) ... [2020-09-25 08:04:49,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:04:49,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:04:49,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:04:49,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:04:49,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:48" (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 08:04:49,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:04:49,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:04:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 08:04:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:04:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:04:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 08:04:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 08:04:49,152 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 08:04:49,152 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:04:49,153 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 08:04:49,153 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 08:04:49,153 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 08:04:49,153 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 08:04:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 08:04:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 08:04:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 08:04:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 08:04:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:04:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:04:49,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:04:51,418 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:04:51,419 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:04:51,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:04:51 BoogieIcfgContainer [2020-09-25 08:04:51,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:04:51,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:04:51,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:04:51,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:04:51,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:04:47" (1/3) ... [2020-09-25 08:04:51,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3e2365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:04:51, skipping insertion in model container [2020-09-25 08:04:51,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:48" (2/3) ... [2020-09-25 08:04:51,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3e2365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:04:51, skipping insertion in model container [2020-09-25 08:04:51,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:04:51" (3/3) ... [2020-09-25 08:04:51,444 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 08:04:51,457 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:04:51,476 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 08:04:51,498 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 08:04:51,533 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:04:51,533 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:04:51,533 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:04:51,533 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:04:51,533 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:04:51,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:04:51,534 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:04:51,534 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:04:51,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states. [2020-09-25 08:04:51,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-25 08:04:51,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:04:51,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:04:51,632 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:04:51,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:04:51,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1578062424, now seen corresponding path program 1 times [2020-09-25 08:04:51,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:04:51,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886927601] [2020-09-25 08:04:51,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:04:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:52,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:52,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:53,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:53,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:53,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:54,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:57,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:57,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:57,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-09-25 08:04:57,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:04:57,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 08:04:57,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:57,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:04:57,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-09-25 08:04:57,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 08:04:57,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:04:57,958 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 08:04:57,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:04:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:57,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:58,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:58,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 08:04:58,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:58,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 08:04:58,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:58,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:58,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:58,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:58,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:58,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:58,490 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 08:04:58,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886927601] [2020-09-25 08:04:58,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:04:58,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:04:58,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033430681] [2020-09-25 08:04:58,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:04:58,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:04:58,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:04:58,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:04:58,548 INFO L87 Difference]: Start difference. First operand 1237 states. Second operand 4 states. [2020-09-25 08:05:03,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:05:03,990 INFO L93 Difference]: Finished difference Result 2024 states and 2590 transitions. [2020-09-25 08:05:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:05:03,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 465 [2020-09-25 08:05:03,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:05:04,026 INFO L225 Difference]: With dead ends: 2024 [2020-09-25 08:05:04,026 INFO L226 Difference]: Without dead ends: 1455 [2020-09-25 08:05:04,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:05:04,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-09-25 08:05:04,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1448. [2020-09-25 08:05:04,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2020-09-25 08:05:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1727 transitions. [2020-09-25 08:05:04,181 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1727 transitions. Word has length 465 [2020-09-25 08:05:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:05:04,183 INFO L479 AbstractCegarLoop]: Abstraction has 1448 states and 1727 transitions. [2020-09-25 08:05:04,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:05:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1727 transitions. [2020-09-25 08:05:04,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-25 08:05:04,203 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:05:04,203 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] [2020-09-25 08:05:04,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:05:04,204 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:05:04,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:05:04,205 INFO L82 PathProgramCache]: Analyzing trace with hash 888544568, now seen corresponding path program 1 times [2020-09-25 08:05:04,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:05:04,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078033659] [2020-09-25 08:05:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:05:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:05:04,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:04,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:05,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:05,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:05,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:08,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:09,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:05:09,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-09-25 08:05:09,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:05:09,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 08:05:09,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:05:09,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:05:09,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:05:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-25 08:05:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 08:05:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:05:10,024 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 08:05:10,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:05:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:05:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:10,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:05:10,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 08:05:10,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:05:10,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 08:05:10,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:05:10,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:05:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:05:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:05:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:05:10,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:05:10,504 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 08:05:10,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078033659] [2020-09-25 08:05:10,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:05:10,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:05:10,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111025870] [2020-09-25 08:05:10,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:05:10,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:05:10,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:05:10,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:05:10,510 INFO L87 Difference]: Start difference. First operand 1448 states and 1727 transitions. Second operand 5 states. [2020-09-25 08:05:17,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:05:17,329 INFO L93 Difference]: Finished difference Result 3862 states and 4652 transitions. [2020-09-25 08:05:17,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:05:17,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-09-25 08:05:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:05:17,349 INFO L225 Difference]: With dead ends: 3862 [2020-09-25 08:05:17,349 INFO L226 Difference]: Without dead ends: 2630 [2020-09-25 08:05:17,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:05:17,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-09-25 08:05:17,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2503. [2020-09-25 08:05:17,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2503 states. [2020-09-25 08:05:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 3018 transitions. [2020-09-25 08:05:17,466 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 3018 transitions. Word has length 465 [2020-09-25 08:05:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:05:17,468 INFO L479 AbstractCegarLoop]: Abstraction has 2503 states and 3018 transitions. [2020-09-25 08:05:17,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:05:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 3018 transitions. [2020-09-25 08:05:17,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-09-25 08:05:17,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:05:17,476 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] [2020-09-25 08:05:17,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:05:17,476 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:05:17,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:05:17,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1155003978, now seen corresponding path program 1 times [2020-09-25 08:05:17,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:05:17,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453078349] [2020-09-25 08:05:17,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:05:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:05:17,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:17,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:18,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:18,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:18,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:18,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:19,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:22,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:22,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:22,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:05:22,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-09-25 08:05:22,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 08:05:22,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-09-25 08:05:22,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:05:22,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:05:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:05:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-09-25 08:05:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 08:05:22,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:05:23,129 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 08:05:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:05:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:05:23,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:23,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:05:23,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 08:05:23,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:05:23,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 08:05:23,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:05:23,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:05:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:05:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:05:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:05:23,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:05:23,558 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 08:05:23,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453078349] [2020-09-25 08:05:23,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:05:23,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:05:23,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084341208] [2020-09-25 08:05:23,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:05:23,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:05:23,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:05:23,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:05:23,561 INFO L87 Difference]: Start difference. First operand 2503 states and 3018 transitions. Second operand 5 states. [2020-09-25 08:05:30,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:05:30,794 INFO L93 Difference]: Finished difference Result 6885 states and 8354 transitions. [2020-09-25 08:05:30,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:05:30,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 466 [2020-09-25 08:05:30,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:05:30,817 INFO L225 Difference]: With dead ends: 6885 [2020-09-25 08:05:30,817 INFO L226 Difference]: Without dead ends: 4673 [2020-09-25 08:05:30,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:05:30,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4673 states. [2020-09-25 08:05:30,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4673 to 4558. [2020-09-25 08:05:30,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4558 states. [2020-09-25 08:05:30,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4558 states to 4558 states and 5516 transitions. [2020-09-25 08:05:30,989 INFO L78 Accepts]: Start accepts. Automaton has 4558 states and 5516 transitions. Word has length 466 [2020-09-25 08:05:30,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:05:30,989 INFO L479 AbstractCegarLoop]: Abstraction has 4558 states and 5516 transitions. [2020-09-25 08:05:30,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:05:30,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4558 states and 5516 transitions. [2020-09-25 08:05:31,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-09-25 08:05:31,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:05:31,005 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] [2020-09-25 08:05:31,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:05:31,005 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:05:31,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:05:31,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1955390198, now seen corresponding path program 1 times [2020-09-25 08:05:31,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:05:31,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858475941] [2020-09-25 08:05:31,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:05:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:05:31,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:31,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:31,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:31,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:31,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:05:34,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking...