/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:36:09,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:36:09,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:36:09,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:36:09,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:36:09,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:36:09,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:36:09,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:36:09,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:36:09,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:36:09,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:36:09,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:36:09,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:36:09,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:36:09,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:36:09,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:36:09,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:36:09,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:36:09,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:36:09,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:36:10,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:36:10,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:36:10,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:36:10,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:36:10,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:36:10,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:36:10,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:36:10,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:36:10,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:36:10,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:36:10,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:36:10,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:36:10,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:36:10,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:36:10,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:36:10,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:36:10,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:36:10,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:36:10,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:36:10,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:36:10,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:36:10,018 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 [2020-09-24 19:36:10,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:36:10,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:36:10,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:36:10,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:36:10,059 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:36:10,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:36:10,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:36:10,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:36:10,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:36:10,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:36:10,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:36:10,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:36:10,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:36:10,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:36:10,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:36:10,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:36:10,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:36:10,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:36:10,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:36:10,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:36:10,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:36:10,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:36:10,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:36:10,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:36:10,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:36:10,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:36:10,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:36:10,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:36:10,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:36:10,064 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:36:10,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:36:10,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:36:10,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:36:10,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:36:10,570 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:36:10,571 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 19:36:10,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/230a0dc83/9e0394e06bca40138ac2361d847b7575/FLAGa64a64570 [2020-09-24 19:36:11,353 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:36:11,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 19:36:11,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/230a0dc83/9e0394e06bca40138ac2361d847b7575/FLAGa64a64570 [2020-09-24 19:36:11,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/230a0dc83/9e0394e06bca40138ac2361d847b7575 [2020-09-24 19:36:11,567 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:36:11,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:36:11,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:36:11,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:36:11,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:36:11,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:36:11" (1/1) ... [2020-09-24 19:36:11,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@333e989e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:36:11, skipping insertion in model container [2020-09-24 19:36:11,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:36:11" (1/1) ... [2020-09-24 19:36:11,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:36:11,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:36:12,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:36:12,358 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:36:12,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:36:12,654 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:36:12,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:36:12 WrapperNode [2020-09-24 19:36:12,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:36:12,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:36:12,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:36:12,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:36:12,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:36:12" (1/1) ... [2020-09-24 19:36:12,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:36:12" (1/1) ... [2020-09-24 19:36:12,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:36:12" (1/1) ... [2020-09-24 19:36:12,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:36:12" (1/1) ... [2020-09-24 19:36:12,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:36:12" (1/1) ... [2020-09-24 19:36:12,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:36:12" (1/1) ... [2020-09-24 19:36:12,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:36:12" (1/1) ... [2020-09-24 19:36:12,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:36:12,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:36:12,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:36:12,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:36:12,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:36:12" (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 [2020-09-24 19:36:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:36:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:36:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 19:36:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:36:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:36:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 19:36:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 19:36:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 19:36:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 19:36:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 19:36:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 19:36:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 19:36:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 19:36:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 19:36:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 19:36:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 19:36:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 19:36:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 19:36:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:36:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:36:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:36:14,915 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:36:14,915 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 19:36:14,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:36:14 BoogieIcfgContainer [2020-09-24 19:36:14,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:36:14,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:36:14,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:36:14,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:36:14,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:36:11" (1/3) ... [2020-09-24 19:36:14,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c66f307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:36:14, skipping insertion in model container [2020-09-24 19:36:14,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:36:12" (2/3) ... [2020-09-24 19:36:14,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c66f307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:36:14, skipping insertion in model container [2020-09-24 19:36:14,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:36:14" (3/3) ... [2020-09-24 19:36:14,941 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 19:36:14,954 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:36:14,973 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 19:36:14,993 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 19:36:15,030 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:36:15,030 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:36:15,030 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:36:15,030 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:36:15,030 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:36:15,030 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:36:15,031 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:36:15,031 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:36:15,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-09-24 19:36:15,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-24 19:36:15,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:36:15,114 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] [2020-09-24 19:36:15,115 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:36:15,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:36:15,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1272027086, now seen corresponding path program 1 times [2020-09-24 19:36:15,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:36:15,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083163119] [2020-09-24 19:36:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:36:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:36:15,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:16,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:16,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:36:16,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-24 19:36:16,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:36:16,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1131 [2020-09-24 19:36:16,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:36:16,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:36:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-09-24 19:36:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-24 19:36:16,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 19:36:17,647 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:36:17,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:36:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:36:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:17,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:36:17,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 19:36:17,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:36:17,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 19:36:17,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:36:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:36:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:36:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:36:17,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:36:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:36:18,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083163119] [2020-09-24 19:36:18,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:36:18,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:36:18,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879527708] [2020-09-24 19:36:18,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:36:18,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:36:18,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:36:18,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:36:18,183 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-09-24 19:36:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:36:22,941 INFO L93 Difference]: Finished difference Result 1830 states and 2374 transitions. [2020-09-24 19:36:22,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:36:22,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 414 [2020-09-24 19:36:22,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:36:22,976 INFO L225 Difference]: With dead ends: 1830 [2020-09-24 19:36:22,977 INFO L226 Difference]: Without dead ends: 1312 [2020-09-24 19:36:22,985 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 [2020-09-24 19:36:23,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-09-24 19:36:23,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1303. [2020-09-24 19:36:23,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1303 states. [2020-09-24 19:36:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1563 transitions. [2020-09-24 19:36:23,121 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1563 transitions. Word has length 414 [2020-09-24 19:36:23,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:36:23,123 INFO L479 AbstractCegarLoop]: Abstraction has 1303 states and 1563 transitions. [2020-09-24 19:36:23,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:36:23,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1563 transitions. [2020-09-24 19:36:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-24 19:36:23,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:36:23,135 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] [2020-09-24 19:36:23,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:36:23,136 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:36:23,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:36:23,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1791071559, now seen corresponding path program 1 times [2020-09-24 19:36:23,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:36:23,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891839083] [2020-09-24 19:36:23,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:36:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:36:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:23,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:23,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:24,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:24,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:24,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:36:24,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-24 19:36:24,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:36:24,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-09-24 19:36:24,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:36:24,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:36:24,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-24 19:36:24,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 19:36:24,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:36:24,840 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:36:24,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:36:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:36:24,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:24,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:36:24,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 19:36:24,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:36:24,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 19:36:24,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:36:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:36:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:36:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:36:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:36:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:36:25,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891839083] [2020-09-24 19:36:25,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:36:25,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:36:25,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125802440] [2020-09-24 19:36:25,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:36:25,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:36:25,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:36:25,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:36:25,171 INFO L87 Difference]: Start difference. First operand 1303 states and 1563 transitions. Second operand 5 states. [2020-09-24 19:36:31,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:36:31,157 INFO L93 Difference]: Finished difference Result 3495 states and 4246 transitions. [2020-09-24 19:36:31,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:36:31,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-09-24 19:36:31,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:36:31,189 INFO L225 Difference]: With dead ends: 3495 [2020-09-24 19:36:31,189 INFO L226 Difference]: Without dead ends: 2370 [2020-09-24 19:36:31,206 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 [2020-09-24 19:36:31,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2020-09-24 19:36:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 2245. [2020-09-24 19:36:31,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-09-24 19:36:31,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 2728 transitions. [2020-09-24 19:36:31,340 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 2728 transitions. Word has length 414 [2020-09-24 19:36:31,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:36:31,342 INFO L479 AbstractCegarLoop]: Abstraction has 2245 states and 2728 transitions. [2020-09-24 19:36:31,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:36:31,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 2728 transitions. [2020-09-24 19:36:31,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-09-24 19:36:31,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:36:31,350 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] [2020-09-24 19:36:31,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:36:31,351 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:36:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:36:31,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1512250717, now seen corresponding path program 1 times [2020-09-24 19:36:31,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:36:31,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510458521] [2020-09-24 19:36:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:36:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:36:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:31,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:31,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:32,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:32,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:32,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:32,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:36:32,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-09-24 19:36:32,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:36:32,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1053 [2020-09-24 19:36:32,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:36:32,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:36:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-09-24 19:36:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:36:32,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:36:32,806 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:36:32,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:36:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:36:32,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:32,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:36:32,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 19:36:32,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:36:32,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 19:36:32,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:36:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:36:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:36:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:36:32,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:36:33,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:36:33,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510458521] [2020-09-24 19:36:33,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:36:33,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:36:33,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785765859] [2020-09-24 19:36:33,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:36:33,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:36:33,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:36:33,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:36:33,089 INFO L87 Difference]: Start difference. First operand 2245 states and 2728 transitions. Second operand 4 states. [2020-09-24 19:36:36,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:36:36,905 INFO L93 Difference]: Finished difference Result 6342 states and 7767 transitions. [2020-09-24 19:36:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:36:36,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 415 [2020-09-24 19:36:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:36:36,926 INFO L225 Difference]: With dead ends: 6342 [2020-09-24 19:36:36,926 INFO L226 Difference]: Without dead ends: 4309 [2020-09-24 19:36:36,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:36:36,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2020-09-24 19:36:37,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 2247. [2020-09-24 19:36:37,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2247 states. [2020-09-24 19:36:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 2730 transitions. [2020-09-24 19:36:37,027 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 2730 transitions. Word has length 415 [2020-09-24 19:36:37,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:36:37,027 INFO L479 AbstractCegarLoop]: Abstraction has 2247 states and 2730 transitions. [2020-09-24 19:36:37,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:36:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 2730 transitions. [2020-09-24 19:36:37,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-09-24 19:36:37,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:36:37,034 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] [2020-09-24 19:36:37,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:36:37,034 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:36:37,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:36:37,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1261271917, now seen corresponding path program 1 times [2020-09-24 19:36:37,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:36:37,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379335179] [2020-09-24 19:36:37,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:36:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:36:37,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:37,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:37,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:37,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:38,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:38,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:36:38,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-09-24 19:36:38,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:36:38,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:36:38,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:36:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:36:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 19:36:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 19:36:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:36:38,566 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:36:38,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:36:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:36:38,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:38,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:36:38,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 19:36:38,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:36:38,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 19:36:38,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:36:38,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:36:38,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:36:38,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:36:38,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:36:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:36:38,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379335179] [2020-09-24 19:36:38,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:36:38,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:36:38,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846562146] [2020-09-24 19:36:38,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:36:38,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:36:38,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:36:38,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:36:38,861 INFO L87 Difference]: Start difference. First operand 2247 states and 2730 transitions. Second operand 5 states. [2020-09-24 19:36:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:36:44,658 INFO L93 Difference]: Finished difference Result 6199 states and 7579 transitions. [2020-09-24 19:36:44,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:36:44,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 416 [2020-09-24 19:36:44,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:36:44,681 INFO L225 Difference]: With dead ends: 6199 [2020-09-24 19:36:44,682 INFO L226 Difference]: Without dead ends: 4175 [2020-09-24 19:36:44,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:36:44,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2020-09-24 19:36:44,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 4050. [2020-09-24 19:36:44,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4050 states. [2020-09-24 19:36:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 4944 transitions. [2020-09-24 19:36:44,829 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 4944 transitions. Word has length 416 [2020-09-24 19:36:44,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:36:44,829 INFO L479 AbstractCegarLoop]: Abstraction has 4050 states and 4944 transitions. [2020-09-24 19:36:44,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:36:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 4944 transitions. [2020-09-24 19:36:44,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-09-24 19:36:44,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:36:44,840 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] [2020-09-24 19:36:44,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:36:44,841 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:36:44,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:36:44,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1292337001, now seen corresponding path program 1 times [2020-09-24 19:36:44,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:36:44,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232052148] [2020-09-24 19:36:44,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:36:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:36:44,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:45,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:45,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:45,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:45,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:45,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:36:45,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-09-24 19:36:45,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:36:45,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-24 19:36:45,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:36:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:36:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-09-24 19:36:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:36:45,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:36:46,333 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:36:46,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:36:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:36:46,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:46,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:36:46,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 19:36:46,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:36:46,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 19:36:46,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:36:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:36:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:36:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:36:46,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:36:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:36:46,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232052148] [2020-09-24 19:36:46,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:36:46,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:36:46,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615970868] [2020-09-24 19:36:46,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:36:46,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:36:46,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:36:46,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:36:46,640 INFO L87 Difference]: Start difference. First operand 4050 states and 4944 transitions. Second operand 4 states. [2020-09-24 19:36:50,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:36:50,623 INFO L93 Difference]: Finished difference Result 11460 states and 14047 transitions. [2020-09-24 19:36:50,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:36:50,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 417 [2020-09-24 19:36:50,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:36:50,658 INFO L225 Difference]: With dead ends: 11460 [2020-09-24 19:36:50,658 INFO L226 Difference]: Without dead ends: 7829 [2020-09-24 19:36:50,667 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 [2020-09-24 19:36:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7829 states. [2020-09-24 19:36:50,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7829 to 4054. [2020-09-24 19:36:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4054 states. [2020-09-24 19:36:50,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4054 states to 4054 states and 4948 transitions. [2020-09-24 19:36:50,816 INFO L78 Accepts]: Start accepts. Automaton has 4054 states and 4948 transitions. Word has length 417 [2020-09-24 19:36:50,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:36:50,817 INFO L479 AbstractCegarLoop]: Abstraction has 4054 states and 4948 transitions. [2020-09-24 19:36:50,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:36:50,817 INFO L276 IsEmpty]: Start isEmpty. Operand 4054 states and 4948 transitions. [2020-09-24 19:36:50,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-09-24 19:36:50,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:36:50,826 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] [2020-09-24 19:36:50,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:36:50,827 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:36:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:36:50,827 INFO L82 PathProgramCache]: Analyzing trace with hash 304375249, now seen corresponding path program 1 times [2020-09-24 19:36:50,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:36:50,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831634352] [2020-09-24 19:36:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:36:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:36:51,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:51,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:51,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:51,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:51,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:36:51,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-09-24 19:36:51,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:36:51,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-09-24 19:36:51,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:36:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:36:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-09-24 19:36:51,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-09-24 19:36:51,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:36:52,559 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:36:52,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:36:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:36:52,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:52,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:36:52,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 19:36:52,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:36:52,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 19:36:52,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:36:52,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:36:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:36:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:36:52,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:36:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:36:53,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831634352] [2020-09-24 19:36:53,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:36:53,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:36:53,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325286106] [2020-09-24 19:36:53,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:36:53,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:36:53,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:36:53,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:36:53,118 INFO L87 Difference]: Start difference. First operand 4054 states and 4948 transitions. Second operand 5 states. [2020-09-24 19:36:59,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:36:59,784 INFO L93 Difference]: Finished difference Result 11153 states and 13669 transitions. [2020-09-24 19:36:59,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:36:59,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 418 [2020-09-24 19:36:59,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:36:59,815 INFO L225 Difference]: With dead ends: 11153 [2020-09-24 19:36:59,815 INFO L226 Difference]: Without dead ends: 7654 [2020-09-24 19:36:59,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:36:59,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7654 states. [2020-09-24 19:37:00,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7654 to 7546. [2020-09-24 19:37:00,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7546 states. [2020-09-24 19:37:00,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7546 states to 7546 states and 9203 transitions. [2020-09-24 19:37:00,152 INFO L78 Accepts]: Start accepts. Automaton has 7546 states and 9203 transitions. Word has length 418 [2020-09-24 19:37:00,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:37:00,152 INFO L479 AbstractCegarLoop]: Abstraction has 7546 states and 9203 transitions. [2020-09-24 19:37:00,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:37:00,153 INFO L276 IsEmpty]: Start isEmpty. Operand 7546 states and 9203 transitions. [2020-09-24 19:37:00,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-09-24 19:37:00,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:37:00,168 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] [2020-09-24 19:37:00,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:37:00,169 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:37:00,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:37:00,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1261092429, now seen corresponding path program 1 times [2020-09-24 19:37:00,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:37:00,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906381303] [2020-09-24 19:37:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:37:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:37:00,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:37:00,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:37:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:37:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:37:01,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:37:01,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:37:01,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-09-24 19:37:01,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:37:01,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-09-24 19:37:01,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:37:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:37:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-09-24 19:37:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:37:01,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:37:01,662 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:37:01,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:37:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:37:01,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:37:01,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:37:01,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 19:37:01,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:37:01,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 19:37:01,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:37:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:37:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:37:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:37:01,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:37:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:37:01,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906381303] [2020-09-24 19:37:01,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:37:01,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:37:01,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395390281] [2020-09-24 19:37:01,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:37:01,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:37:01,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:37:01,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:37:01,891 INFO L87 Difference]: Start difference. First operand 7546 states and 9203 transitions. Second operand 4 states.