/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=HIGHLEXORDER --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 22:58:21,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:58:21,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:58:21,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:58:21,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:58:21,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:58:21,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:58:21,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:58:21,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:58:21,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:58:21,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:58:21,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:58:21,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:58:21,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:58:21,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:58:21,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:58:21,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:58:21,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:58:21,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:58:21,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:58:21,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:58:21,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:58:21,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:58:21,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:58:21,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:58:21,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:58:21,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:58:21,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:58:21,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:58:21,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:58:21,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:58:21,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:58:21,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:58:21,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:58:21,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:58:21,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:58:21,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:58:21,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:58:21,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:58:21,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:58:21,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:58:21,593 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 22:58:21,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:58:21,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:58:21,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:58:21,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:58:21,640 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:58:21,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:58:21,641 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:58:21,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:58:21,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:58:21,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:58:21,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:58:21,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:58:21,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:58:21,643 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:58:21,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:58:21,644 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:58:21,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:58:21,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:58:21,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:58:21,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:58:21,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:58:21,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:58:21,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:58:21,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:58:21,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:58:21,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:58:21,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:58:21,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:58:21,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:58:21,647 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:58:22,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:58:22,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:58:22,164 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:58:22,165 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:58:22,166 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:58:22,167 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 22:58:22,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5bd5b437/6f2fbc60a63947c4bfd586519dde025c/FLAG260281787 [2020-09-24 22:58:22,863 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:58:22,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 22:58:22,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5bd5b437/6f2fbc60a63947c4bfd586519dde025c/FLAG260281787 [2020-09-24 22:58:23,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5bd5b437/6f2fbc60a63947c4bfd586519dde025c [2020-09-24 22:58:23,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:58:23,122 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:58:23,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:58:23,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:58:23,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:58:23,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:58:23" (1/1) ... [2020-09-24 22:58:23,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b134fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:23, skipping insertion in model container [2020-09-24 22:58:23,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:58:23" (1/1) ... [2020-09-24 22:58:23,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:58:23,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:58:23,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:58:24,015 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:58:24,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:58:24,494 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:58:24,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:24 WrapperNode [2020-09-24 22:58:24,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:58:24,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:58:24,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:58:24,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:58:24,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:24" (1/1) ... [2020-09-24 22:58:24,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:24" (1/1) ... [2020-09-24 22:58:24,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:24" (1/1) ... [2020-09-24 22:58:24,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:24" (1/1) ... [2020-09-24 22:58:24,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:24" (1/1) ... [2020-09-24 22:58:24,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:24" (1/1) ... [2020-09-24 22:58:24,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:24" (1/1) ... [2020-09-24 22:58:24,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:58:24,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:58:24,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:58:24,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:58:24,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:24" (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 22:58:24,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:58:24,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:58:24,697 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:58:24,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:58:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:58:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 22:58:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 22:58:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 22:58:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 22:58:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:58:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:58:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 22:58:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 22:58:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 22:58:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 22:58:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 22:58:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 22:58:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 22:58:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:58:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:58:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:58:26,604 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:58:26,605 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:58:26,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:58:26 BoogieIcfgContainer [2020-09-24 22:58:26,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:58:26,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:58:26,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:58:26,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:58:26,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:58:23" (1/3) ... [2020-09-24 22:58:26,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7a9da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:58:26, skipping insertion in model container [2020-09-24 22:58:26,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:24" (2/3) ... [2020-09-24 22:58:26,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7a9da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:58:26, skipping insertion in model container [2020-09-24 22:58:26,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:58:26" (3/3) ... [2020-09-24 22:58:26,632 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 22:58:26,646 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:58:26,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 22:58:26,686 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 22:58:26,719 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:58:26,719 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:58:26,720 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:58:26,720 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:58:26,720 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:58:26,720 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:58:26,720 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:58:26,720 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:58:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-09-24 22:58:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-24 22:58:26,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:26,804 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 22:58:26,805 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:26,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:26,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1272027086, now seen corresponding path program 1 times [2020-09-24 22:58:26,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:26,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697513821] [2020-09-24 22:58:26,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:27,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:29,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:29,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:32,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:32,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-24 22:58:32,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:58:32,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-09-24 22:58:32,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:32,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:32,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-09-24 22:58:32,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-24 22:58:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:58:32,990 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 22:58:32,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:33,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:33,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:33,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 22:58:33,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:33,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 22:58:33,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:33,567 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 22:58:33,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697513821] [2020-09-24 22:58:33,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:33,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:58:33,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522823654] [2020-09-24 22:58:33,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:58:33,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:33,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:58:33,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:58:33,613 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-09-24 22:58:38,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:58:38,503 INFO L93 Difference]: Finished difference Result 1830 states and 2374 transitions. [2020-09-24 22:58:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:58:38,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 414 [2020-09-24 22:58:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:58:38,546 INFO L225 Difference]: With dead ends: 1830 [2020-09-24 22:58:38,547 INFO L226 Difference]: Without dead ends: 1312 [2020-09-24 22:58:38,555 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 22:58:38,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-09-24 22:58:38,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1303. [2020-09-24 22:58:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1303 states. [2020-09-24 22:58:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1563 transitions. [2020-09-24 22:58:38,686 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1563 transitions. Word has length 414 [2020-09-24 22:58:38,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:58:38,688 INFO L479 AbstractCegarLoop]: Abstraction has 1303 states and 1563 transitions. [2020-09-24 22:58:38,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:58:38,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1563 transitions. [2020-09-24 22:58:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-24 22:58:38,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:38,700 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 22:58:38,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:58:38,701 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:38,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:38,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1791071559, now seen corresponding path program 1 times [2020-09-24 22:58:38,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:38,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596991410] [2020-09-24 22:58:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:38,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:39,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:39,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:39,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:39,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:39,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:39,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:40,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:43,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:43,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-24 22:58:43,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:58:43,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-09-24 22:58:43,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:43,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:58:43,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-09-24 22:58:43,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 22:58:43,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:44,386 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 22:58:44,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:44,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:44,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:44,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 22:58:44,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:44,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 22:58:44,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:44,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:44,958 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 22:58:44,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596991410] [2020-09-24 22:58:44,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:44,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:58:44,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079464281] [2020-09-24 22:58:44,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:58:44,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:44,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:58:44,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:58:44,966 INFO L87 Difference]: Start difference. First operand 1303 states and 1563 transitions. Second operand 5 states. [2020-09-24 22:58:52,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:58:52,431 INFO L93 Difference]: Finished difference Result 3376 states and 4098 transitions. [2020-09-24 22:58:52,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:58:52,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-09-24 22:58:52,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:58:52,446 INFO L225 Difference]: With dead ends: 3376 [2020-09-24 22:58:52,447 INFO L226 Difference]: Without dead ends: 2373 [2020-09-24 22:58:52,451 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 22:58:52,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2020-09-24 22:58:52,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2248. [2020-09-24 22:58:52,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2248 states. [2020-09-24 22:58:52,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2733 transitions. [2020-09-24 22:58:52,584 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2733 transitions. Word has length 414 [2020-09-24 22:58:52,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:58:52,585 INFO L479 AbstractCegarLoop]: Abstraction has 2248 states and 2733 transitions. [2020-09-24 22:58:52,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:58:52,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2733 transitions. [2020-09-24 22:58:52,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-09-24 22:58:52,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:52,596 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 22:58:52,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:58:52,596 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:52,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:52,597 INFO L82 PathProgramCache]: Analyzing trace with hash 2023473135, now seen corresponding path program 1 times [2020-09-24 22:58:52,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:52,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057136313] [2020-09-24 22:58:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:52,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:53,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:53,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:53,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:53,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:54,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:56,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:57,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:57,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:57,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-09-24 22:58:57,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:58:57,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-24 22:58:57,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:57,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-24 22:58:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:58:57,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:58,066 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 22:58:58,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:58,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:58,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:58,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 22:58:58,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:58,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 22:58:58,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:58,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:58,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:58,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:58,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:58,408 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 22:58:58,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057136313] [2020-09-24 22:58:58,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:58,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:58:58,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492293873] [2020-09-24 22:58:58,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:58:58,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:58,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:58:58,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:58:58,415 INFO L87 Difference]: Start difference. First operand 2248 states and 2733 transitions. Second operand 4 states. [2020-09-24 22:59:02,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:59:02,222 INFO L93 Difference]: Finished difference Result 6259 states and 7654 transitions. [2020-09-24 22:59:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:59:02,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 415 [2020-09-24 22:59:02,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:59:02,243 INFO L225 Difference]: With dead ends: 6259 [2020-09-24 22:59:02,243 INFO L226 Difference]: Without dead ends: 4256 [2020-09-24 22:59:02,248 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 22:59:02,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4256 states. [2020-09-24 22:59:02,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4256 to 2254. [2020-09-24 22:59:02,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2254 states. [2020-09-24 22:59:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 2741 transitions. [2020-09-24 22:59:02,348 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 2741 transitions. Word has length 415 [2020-09-24 22:59:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:59:02,350 INFO L479 AbstractCegarLoop]: Abstraction has 2254 states and 2741 transitions. [2020-09-24 22:59:02,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:59:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 2741 transitions. [2020-09-24 22:59:02,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-09-24 22:59:02,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:59:02,357 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 22:59:02,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:59:02,359 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:59:02,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:59:02,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1003228010, now seen corresponding path program 1 times [2020-09-24 22:59:02,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:59:02,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342040448] [2020-09-24 22:59:02,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:59:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:59:02,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:02,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:02,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:02,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:03,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:03,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:04,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:07,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:07,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:07,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:59:07,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-09-24 22:59:07,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:59:07,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-09-24 22:59:07,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:59:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:59:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-09-24 22:59:07,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 22:59:07,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:59:07,856 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 22:59:07,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:59:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:59:07,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:07,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:59:07,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 22:59:07,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:59:07,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 22:59:07,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:59:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:59:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:59:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:59:07,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:59:08,062 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 22:59:08,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342040448] [2020-09-24 22:59:08,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:59:08,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:59:08,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448750745] [2020-09-24 22:59:08,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:59:08,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:59:08,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:59:08,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:59:08,066 INFO L87 Difference]: Start difference. First operand 2254 states and 2741 transitions. Second operand 4 states.