/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:08:01,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:08:01,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:08:01,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:08:01,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:08:01,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:08:01,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:08:01,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:08:01,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:08:01,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:08:01,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:08:01,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:08:01,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:08:01,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:08:01,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:08:01,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:08:01,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:08:01,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:08:01,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:08:01,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:08:01,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:08:01,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:08:01,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:08:01,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:08:01,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:08:01,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:08:01,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:08:01,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:08:01,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:08:01,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:08:01,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:08:01,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:08:01,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:08:01,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:08:01,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:08:01,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:08:01,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:08:01,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:08:01,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:08:01,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:08:01,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:08:01,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:08:01,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:08:01,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:08:01,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:08:01,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:08:01,783 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:08:01,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:08:01,785 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:08:01,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:08:01,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:08:01,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:08:01,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:08:01,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:08:01,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:08:01,787 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:08:01,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:08:01,787 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:08:01,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:08:01,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:08:01,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:08:01,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:08:01,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:08:01,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:08:01,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:08:01,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:08:01,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:08:01,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:08:01,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:08:01,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:08:01,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:08:01,791 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:08:02,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:08:02,291 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:08:02,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:08:02,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:08:02,302 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:08:02,303 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 00:08:02,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce03b2667/dd317d5f4aa5417ab2c550e24d3fc017/FLAGa0bf930bf [2020-09-25 00:08:03,114 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:08:03,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 00:08:03,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce03b2667/dd317d5f4aa5417ab2c550e24d3fc017/FLAGa0bf930bf [2020-09-25 00:08:03,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce03b2667/dd317d5f4aa5417ab2c550e24d3fc017 [2020-09-25 00:08:03,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:08:03,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:08:03,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:08:03,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:08:03,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:08:03,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:08:03" (1/1) ... [2020-09-25 00:08:03,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336ce4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:03, skipping insertion in model container [2020-09-25 00:08:03,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:08:03" (1/1) ... [2020-09-25 00:08:03,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:08:03,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:08:04,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:08:04,223 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:08:04,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:08:04,712 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:08:04,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:04 WrapperNode [2020-09-25 00:08:04,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:08:04,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:08:04,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:08:04,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:08:04,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:04" (1/1) ... [2020-09-25 00:08:04,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:04" (1/1) ... [2020-09-25 00:08:04,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:04" (1/1) ... [2020-09-25 00:08:04,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:04" (1/1) ... [2020-09-25 00:08:04,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:04" (1/1) ... [2020-09-25 00:08:04,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:04" (1/1) ... [2020-09-25 00:08:04,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:04" (1/1) ... [2020-09-25 00:08:04,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:08:04,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:08:04,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:08:04,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:08:04,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:08:04,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:08:04,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:08:04,963 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:08:04,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:08:04,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:08:04,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 00:08:04,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 00:08:04,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 00:08:04,965 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 00:08:04,966 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:08:04,966 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:08:04,966 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 00:08:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 00:08:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 00:08:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 00:08:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 00:08:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 00:08:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 00:08:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:08:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:08:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:08:07,137 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:08:07,138 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:08:07,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:08:07 BoogieIcfgContainer [2020-09-25 00:08:07,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:08:07,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:08:07,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:08:07,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:08:07,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:08:03" (1/3) ... [2020-09-25 00:08:07,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f52616b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:08:07, skipping insertion in model container [2020-09-25 00:08:07,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:04" (2/3) ... [2020-09-25 00:08:07,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f52616b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:08:07, skipping insertion in model container [2020-09-25 00:08:07,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:08:07" (3/3) ... [2020-09-25 00:08:07,164 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 00:08:07,176 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:08:07,189 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 00:08:07,210 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 00:08:07,246 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:08:07,247 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:08:07,247 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:08:07,247 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:08:07,247 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:08:07,247 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:08:07,247 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:08:07,247 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:08:07,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states. [2020-09-25 00:08:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-09-25 00:08:07,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:08:07,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:08:07,335 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:08:07,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:08:07,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1303335379, now seen corresponding path program 1 times [2020-09-25 00:08:07,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:08:07,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211997971] [2020-09-25 00:08:07,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:08:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:08,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:08,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:08,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:08,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:09,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:09,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:09,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:12,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:12,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:12,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-09-25 00:08:12,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:08:12,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 00:08:12,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:12,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:08:12,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-09-25 00:08:12,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 00:08:12,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:08:13,713 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-25 00:08:13,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:08:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:13,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:13,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:13,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 00:08:13,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:08:13,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 00:08:13,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:08:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:08:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:08:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:08:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:08:14,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211997971] [2020-09-25 00:08:14,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:08:14,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:08:14,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654601123] [2020-09-25 00:08:14,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:08:14,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:08:14,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:08:14,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:08:14,453 INFO L87 Difference]: Start difference. First operand 1233 states. Second operand 5 states. [2020-09-25 00:08:23,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:08:23,287 INFO L93 Difference]: Finished difference Result 3275 states and 4224 transitions. [2020-09-25 00:08:23,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:08:23,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 456 [2020-09-25 00:08:23,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:08:23,331 INFO L225 Difference]: With dead ends: 3275 [2020-09-25 00:08:23,331 INFO L226 Difference]: Without dead ends: 1949 [2020-09-25 00:08:23,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:08:23,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2020-09-25 00:08:23,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1821. [2020-09-25 00:08:23,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1821 states. [2020-09-25 00:08:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2163 transitions. [2020-09-25 00:08:23,476 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2163 transitions. Word has length 456 [2020-09-25 00:08:23,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:08:23,478 INFO L479 AbstractCegarLoop]: Abstraction has 1821 states and 2163 transitions. [2020-09-25 00:08:23,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:08:23,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2163 transitions. [2020-09-25 00:08:23,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-09-25 00:08:23,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:08:23,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:08:23,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:08:23,492 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:08:23,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:08:23,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1800204659, now seen corresponding path program 1 times [2020-09-25 00:08:23,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:08:23,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466081462] [2020-09-25 00:08:23,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:08:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:23,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:23,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:24,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:24,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:24,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:25,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:28,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:28,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 464 [2020-09-25 00:08:28,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 00:08:28,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-09-25 00:08:28,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:08:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-09-25 00:08:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 00:08:28,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:08:29,220 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-25 00:08:29,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:08:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:29,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:29,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 00:08:29,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:08:29,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 00:08:29,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:29,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:08:29,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:08:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:08:29,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:08:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:08:29,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466081462] [2020-09-25 00:08:29,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:08:29,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:08:29,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915157017] [2020-09-25 00:08:29,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:08:29,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:08:29,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:08:29,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:08:29,807 INFO L87 Difference]: Start difference. First operand 1821 states and 2163 transitions. Second operand 5 states. [2020-09-25 00:08:38,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:08:38,249 INFO L93 Difference]: Finished difference Result 4935 states and 5897 transitions. [2020-09-25 00:08:38,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:08:38,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 457 [2020-09-25 00:08:38,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:08:38,271 INFO L225 Difference]: With dead ends: 4935 [2020-09-25 00:08:38,272 INFO L226 Difference]: Without dead ends: 3352 [2020-09-25 00:08:38,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:08:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2020-09-25 00:08:38,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 3224. [2020-09-25 00:08:38,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3224 states. [2020-09-25 00:08:38,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 3855 transitions. [2020-09-25 00:08:38,441 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 3855 transitions. Word has length 457 [2020-09-25 00:08:38,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:08:38,443 INFO L479 AbstractCegarLoop]: Abstraction has 3224 states and 3855 transitions. [2020-09-25 00:08:38,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:08:38,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 3855 transitions. [2020-09-25 00:08:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-09-25 00:08:38,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:08:38,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:08:38,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:08:38,458 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:08:38,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:08:38,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1530934233, now seen corresponding path program 1 times [2020-09-25 00:08:38,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:08:38,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817790515] [2020-09-25 00:08:38,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:08:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:38,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:38,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:38,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:39,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:39,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:39,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:40,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:43,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:43,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:43,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 465 [2020-09-25 00:08:43,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:08:43,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 00:08:43,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:43,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:08:43,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-09-25 00:08:43,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 00:08:43,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:08:44,041 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-25 00:08:44,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:08:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:44,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:44,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:44,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 00:08:44,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:08:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 00:08:44,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:08:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:08:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:08:44,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:08:44,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:08:44,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817790515] [2020-09-25 00:08:44,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:08:44,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:08:44,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213425521] [2020-09-25 00:08:44,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:08:44,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:08:44,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:08:44,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:08:44,489 INFO L87 Difference]: Start difference. First operand 3224 states and 3855 transitions. Second operand 5 states. [2020-09-25 00:08:51,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:08:51,907 INFO L93 Difference]: Finished difference Result 8917 states and 10703 transitions. [2020-09-25 00:08:51,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:08:51,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 458 [2020-09-25 00:08:51,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:08:51,937 INFO L225 Difference]: With dead ends: 8917 [2020-09-25 00:08:51,937 INFO L226 Difference]: Without dead ends: 6070 [2020-09-25 00:08:51,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:08:51,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6070 states. [2020-09-25 00:08:52,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6070 to 5955. [2020-09-25 00:08:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5955 states. [2020-09-25 00:08:52,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5955 states to 5955 states and 7123 transitions. [2020-09-25 00:08:52,136 INFO L78 Accepts]: Start accepts. Automaton has 5955 states and 7123 transitions. Word has length 458 [2020-09-25 00:08:52,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:08:52,137 INFO L479 AbstractCegarLoop]: Abstraction has 5955 states and 7123 transitions. [2020-09-25 00:08:52,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:08:52,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5955 states and 7123 transitions. [2020-09-25 00:08:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-09-25 00:08:52,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:08:52,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:08:52,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:08:52,150 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:08:52,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:08:52,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1681015527, now seen corresponding path program 1 times [2020-09-25 00:08:52,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:08:52,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658741659] [2020-09-25 00:08:52,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:08:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:52,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:52,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:52,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:52,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking...