/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=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+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:09:07,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:09:07,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:09:07,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:09:07,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:09:07,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:09:07,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:09:07,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:09:07,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:09:07,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:09:07,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:09:07,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:09:07,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:09:07,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:09:07,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:09:07,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:09:07,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:09:07,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:09:07,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:09:07,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:09:07,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:09:07,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:09:07,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:09:07,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:09:07,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:09:07,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:09:07,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:09:07,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:09:07,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:09:07,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:09:07,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:09:07,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:09:07,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:09:07,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:09:07,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:09:07,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:09:07,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:09:07,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:09:07,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:09:07,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:09:07,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:09:07,803 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 [2020-10-12 19:09:07,845 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:09:07,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:09:07,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:09:07,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:09:07,847 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:09:07,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:09:07,848 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:09:07,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:09:07,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:09:07,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:09:07,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:09:07,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:09:07,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:09:07,851 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:09:07,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:09:07,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:09:07,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:09:07,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:09:07,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:09:07,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:09:07,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:09:07,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:09:07,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:09:07,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:09:07,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:09:07,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:09:07,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:09:07,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:09:07,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:09:07,855 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:09:08,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:09:08,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:09:08,210 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:09:08,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:09:08,212 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:09:08,213 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:09:08,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/253511d6f/5e3c4f9c7f5948209e82a047f5e67994/FLAG8913c85e8 [2020-10-12 19:09:08,841 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:09:08,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:09:08,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/253511d6f/5e3c4f9c7f5948209e82a047f5e67994/FLAG8913c85e8 [2020-10-12 19:09:09,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/253511d6f/5e3c4f9c7f5948209e82a047f5e67994 [2020-10-12 19:09:09,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:09:09,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:09:09,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:09:09,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:09:09,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:09:09,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:09:09" (1/1) ... [2020-10-12 19:09:09,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105928f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:09, skipping insertion in model container [2020-10-12 19:09:09,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:09:09" (1/1) ... [2020-10-12 19:09:09,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:09:09,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:09:09,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:09:09,724 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:09:09,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:09:09,927 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:09:09,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:09 WrapperNode [2020-10-12 19:09:09,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:09:09,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:09:09,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:09:09,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:09:09,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:09" (1/1) ... [2020-10-12 19:09:09,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:09" (1/1) ... [2020-10-12 19:09:09,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:09" (1/1) ... [2020-10-12 19:09:09,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:09" (1/1) ... [2020-10-12 19:09:09,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:09" (1/1) ... [2020-10-12 19:09:10,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:09" (1/1) ... [2020-10-12 19:09:10,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:09" (1/1) ... [2020-10-12 19:09:10,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:09:10,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:09:10,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:09:10,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:09:10,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:09" (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 [2020-10-12 19:09:10,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:09:10,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:09:10,139 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:09:10,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:09:10,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:09:10,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:09:10,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:09:10,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:09:10,141 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:09:10,142 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:09:10,142 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:09:10,142 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:09:10,142 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:09:10,142 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:09:10,143 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:09:10,143 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:09:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:09:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:09:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:09:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:09:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:09:11,458 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:09:11,459 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:09:11,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:09:11 BoogieIcfgContainer [2020-10-12 19:09:11,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:09:11,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:09:11,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:09:11,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:09:11,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:09:09" (1/3) ... [2020-10-12 19:09:11,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac0561d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:09:11, skipping insertion in model container [2020-10-12 19:09:11,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:09" (2/3) ... [2020-10-12 19:09:11,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac0561d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:09:11, skipping insertion in model container [2020-10-12 19:09:11,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:09:11" (3/3) ... [2020-10-12 19:09:11,475 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:09:11,485 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:09:11,493 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:09:11,508 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:09:11,534 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:09:11,535 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:09:11,535 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:09:11,535 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:09:11,535 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:09:11,535 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:09:11,536 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:09:11,536 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:09:11,559 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 19:09:11,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 19:09:11,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:11,577 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] [2020-10-12 19:09:11,577 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:11,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:11,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1095322417, now seen corresponding path program 1 times [2020-10-12 19:09:11,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:11,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591674323] [2020-10-12 19:09:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:12,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:12,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:12,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:12,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:12,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:12,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:13,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:13,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:13,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:13,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:14,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:14,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:15,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:17,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:17,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 19:09:17,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:09:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:09:17,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:09:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:09:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 19:09:17,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:09:17,575 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:09:17,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:09:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:17,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:17,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:17,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:09:17,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:17,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:09:17,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:17,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:09:17,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:09:17,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:09:17,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:09:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:09:17,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591674323] [2020-10-12 19:09:17,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:09:17,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:09:17,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477695816] [2020-10-12 19:09:17,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:09:17,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:09:17,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:09:17,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:09:17,689 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 5 states. [2020-10-12 19:09:20,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:09:20,636 INFO L93 Difference]: Finished difference Result 879 states and 1550 transitions. [2020-10-12 19:09:20,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:09:20,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-12 19:09:20,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:09:20,658 INFO L225 Difference]: With dead ends: 879 [2020-10-12 19:09:20,658 INFO L226 Difference]: Without dead ends: 581 [2020-10-12 19:09:20,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:09:20,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-12 19:09:20,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 579. [2020-10-12 19:09:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-12 19:09:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 841 transitions. [2020-10-12 19:09:20,761 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 841 transitions. Word has length 144 [2020-10-12 19:09:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:09:20,762 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 841 transitions. [2020-10-12 19:09:20,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:09:20,762 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 841 transitions. [2020-10-12 19:09:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 19:09:20,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:20,768 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] [2020-10-12 19:09:20,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:09:20,768 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:20,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:20,769 INFO L82 PathProgramCache]: Analyzing trace with hash 337020717, now seen corresponding path program 1 times [2020-10-12 19:09:20,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:20,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851380558] [2020-10-12 19:09:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:20,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:20,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:20,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:21,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:21,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:21,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:21,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:21,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:21,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:22,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:23,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:24,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:25,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:25,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 19:09:25,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:09:25,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:09:25,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:09:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:09:25,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 19:09:25,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:09:26,068 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:09:26,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:09:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:26,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:26,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:09:26,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:09:26,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:09:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:09:26,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:09:26,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:09:26,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:09:26,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851380558] [2020-10-12 19:09:26,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:09:26,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:09:26,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708888517] [2020-10-12 19:09:26,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:09:26,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:09:26,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:09:26,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:09:26,138 INFO L87 Difference]: Start difference. First operand 579 states and 841 transitions. Second operand 5 states. [2020-10-12 19:09:28,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:09:28,616 INFO L93 Difference]: Finished difference Result 1684 states and 2442 transitions. [2020-10-12 19:09:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:09:28,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-12 19:09:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:09:28,627 INFO L225 Difference]: With dead ends: 1684 [2020-10-12 19:09:28,627 INFO L226 Difference]: Without dead ends: 1118 [2020-10-12 19:09:28,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:09:28,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2020-10-12 19:09:28,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1116. [2020-10-12 19:09:28,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1116 states. [2020-10-12 19:09:28,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1604 transitions. [2020-10-12 19:09:28,702 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1604 transitions. Word has length 145 [2020-10-12 19:09:28,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:09:28,702 INFO L479 AbstractCegarLoop]: Abstraction has 1116 states and 1604 transitions. [2020-10-12 19:09:28,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:09:28,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1604 transitions. [2020-10-12 19:09:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 19:09:28,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:28,707 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] [2020-10-12 19:09:28,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:09:28,708 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:28,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:28,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1019877905, now seen corresponding path program 1 times [2020-10-12 19:09:28,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:28,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022121096] [2020-10-12 19:09:28,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:28,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:28,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:29,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:29,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:29,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:29,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:29,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:29,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:32,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:32,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:32,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:32,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:33,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:33,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:33,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 19:09:33,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:09:33,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-12 19:09:33,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:33,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:09:33,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:09:33,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 19:09:33,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:09:34,119 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:09:34,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:09:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:34,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:34,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:34,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:09:34,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:34,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:09:34,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:09:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:09:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:09:34,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:09:34,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022121096] [2020-10-12 19:09:34,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:09:34,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:09:34,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736755532] [2020-10-12 19:09:34,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:09:34,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:09:34,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:09:34,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:09:34,216 INFO L87 Difference]: Start difference. First operand 1116 states and 1604 transitions. Second operand 5 states. [2020-10-12 19:09:36,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:09:36,903 INFO L93 Difference]: Finished difference Result 3018 states and 4357 transitions. [2020-10-12 19:09:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:09:36,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-12 19:09:36,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:09:36,918 INFO L225 Difference]: With dead ends: 3018 [2020-10-12 19:09:36,918 INFO L226 Difference]: Without dead ends: 2148 [2020-10-12 19:09:36,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:09:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2020-10-12 19:09:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2146. [2020-10-12 19:09:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2146 states. [2020-10-12 19:09:37,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3051 transitions. [2020-10-12 19:09:37,119 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3051 transitions. Word has length 146 [2020-10-12 19:09:37,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:09:37,120 INFO L479 AbstractCegarLoop]: Abstraction has 2146 states and 3051 transitions. [2020-10-12 19:09:37,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:09:37,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3051 transitions. [2020-10-12 19:09:37,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-12 19:09:37,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:37,129 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] [2020-10-12 19:09:37,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:09:37,138 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:37,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:37,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1633323668, now seen corresponding path program 1 times [2020-10-12 19:09:37,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:37,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317067419] [2020-10-12 19:09:37,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:37,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:37,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:37,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:37,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:37,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:37,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:38,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:39,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:39,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:39,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:39,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:40,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:42,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:42,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 19:09:42,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:09:42,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:09:42,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:42,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:09:42,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:09:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 19:09:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:42,484 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:09:42,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:09:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:42,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:42,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:42,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:09:42,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:42,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:09:42,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:42,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:09:42,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:09:42,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:09:42,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:09:42,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317067419] [2020-10-12 19:09:42,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:09:42,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:09:42,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890787366] [2020-10-12 19:09:42,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:09:42,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:09:42,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:09:42,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:09:42,680 INFO L87 Difference]: Start difference. First operand 2146 states and 3051 transitions. Second operand 5 states. [2020-10-12 19:09:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:09:45,610 INFO L93 Difference]: Finished difference Result 5734 states and 8185 transitions. [2020-10-12 19:09:45,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:09:45,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-12 19:09:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:09:45,632 INFO L225 Difference]: With dead ends: 5734 [2020-10-12 19:09:45,633 INFO L226 Difference]: Without dead ends: 4104 [2020-10-12 19:09:45,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:09:45,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2020-10-12 19:09:45,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 4102. [2020-10-12 19:09:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4102 states. [2020-10-12 19:09:45,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4102 states to 4102 states and 5755 transitions. [2020-10-12 19:09:45,897 INFO L78 Accepts]: Start accepts. Automaton has 4102 states and 5755 transitions. Word has length 147 [2020-10-12 19:09:45,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:09:45,897 INFO L479 AbstractCegarLoop]: Abstraction has 4102 states and 5755 transitions. [2020-10-12 19:09:45,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:09:45,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4102 states and 5755 transitions. [2020-10-12 19:09:45,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 19:09:45,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:45,905 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] [2020-10-12 19:09:45,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:09:45,906 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:45,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:45,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1900765966, now seen corresponding path program 1 times [2020-10-12 19:09:45,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:45,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714370114] [2020-10-12 19:09:45,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:45,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:45,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:46,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:46,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:46,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:46,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:46,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:46,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:46,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:47,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:48,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:49,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:49,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 19:09:49,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:09:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3805 [2020-10-12 19:09:49,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:09:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:09:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-12 19:09:49,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:50,048 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:09:50,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:09:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:50,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:50,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:50,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:09:50,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:09:50,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:09:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:09:50,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:09:50,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 19:09:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:09:50,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714370114] [2020-10-12 19:09:50,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:09:50,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:09:50,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713281898] [2020-10-12 19:09:50,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:09:50,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:09:50,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:09:50,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:09:50,152 INFO L87 Difference]: Start difference. First operand 4102 states and 5755 transitions. Second operand 5 states. [2020-10-12 19:09:53,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:09:53,134 INFO L93 Difference]: Finished difference Result 11678 states and 16381 transitions. [2020-10-12 19:09:53,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:09:53,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-12 19:09:53,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:09:53,169 INFO L225 Difference]: With dead ends: 11678 [2020-10-12 19:09:53,169 INFO L226 Difference]: Without dead ends: 7952 [2020-10-12 19:09:53,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:09:53,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7952 states. [2020-10-12 19:09:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7952 to 7950. [2020-10-12 19:09:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7950 states. [2020-10-12 19:09:53,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7950 states to 7950 states and 11007 transitions. [2020-10-12 19:09:53,855 INFO L78 Accepts]: Start accepts. Automaton has 7950 states and 11007 transitions. Word has length 148 [2020-10-12 19:09:53,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:09:53,856 INFO L479 AbstractCegarLoop]: Abstraction has 7950 states and 11007 transitions. [2020-10-12 19:09:53,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:09:53,856 INFO L276 IsEmpty]: Start isEmpty. Operand 7950 states and 11007 transitions. [2020-10-12 19:09:53,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-12 19:09:53,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:53,869 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] [2020-10-12 19:09:53,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:09:53,869 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:53,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:53,870 INFO L82 PathProgramCache]: Analyzing trace with hash 985590061, now seen corresponding path program 1 times [2020-10-12 19:09:53,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:53,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337720001] [2020-10-12 19:09:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:53,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:53,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:53,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:54,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:54,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:54,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:55,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:55,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 19:09:55,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:09:55,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1364 [2020-10-12 19:09:55,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:09:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:09:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 19:09:55,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:55,522 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:09:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:09:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:55,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:55,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:55,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:09:55,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:55,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:09:55,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:09:55,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:09:55,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:09:55,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:55,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:09:55,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337720001] [2020-10-12 19:09:55,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:09:55,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:09:55,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616793317] [2020-10-12 19:09:55,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:09:55,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:09:55,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:09:55,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:09:55,616 INFO L87 Difference]: Start difference. First operand 7950 states and 11007 transitions. Second operand 5 states. [2020-10-12 19:09:58,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:09:58,614 INFO L93 Difference]: Finished difference Result 22946 states and 31567 transitions. [2020-10-12 19:09:58,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:09:58,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-12 19:09:58,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:09:58,676 INFO L225 Difference]: With dead ends: 22946 [2020-10-12 19:09:58,676 INFO L226 Difference]: Without dead ends: 15244 [2020-10-12 19:09:58,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:09:58,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15244 states. [2020-10-12 19:09:59,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15244 to 15242. [2020-10-12 19:09:59,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15242 states. [2020-10-12 19:09:59,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15242 states to 15242 states and 20721 transitions. [2020-10-12 19:09:59,734 INFO L78 Accepts]: Start accepts. Automaton has 15242 states and 20721 transitions. Word has length 149 [2020-10-12 19:09:59,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:09:59,735 INFO L479 AbstractCegarLoop]: Abstraction has 15242 states and 20721 transitions. [2020-10-12 19:09:59,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:09:59,735 INFO L276 IsEmpty]: Start isEmpty. Operand 15242 states and 20721 transitions. [2020-10-12 19:09:59,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-12 19:09:59,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:59,759 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] [2020-10-12 19:09:59,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:09:59,760 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:59,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:59,760 INFO L82 PathProgramCache]: Analyzing trace with hash -257673966, now seen corresponding path program 1 times [2020-10-12 19:09:59,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:59,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799264447] [2020-10-12 19:09:59,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:59,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:59,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:59,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 19:09:59,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:59,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-12 19:09:59,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:09:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 19:09:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 19:09:59,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:00,165 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:10:00,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:00,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:00,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:00,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:00,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:10:00,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:00,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:10:00,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799264447] [2020-10-12 19:10:00,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:00,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:10:00,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254250194] [2020-10-12 19:10:00,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:10:00,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:00,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:10:00,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:10:00,218 INFO L87 Difference]: Start difference. First operand 15242 states and 20721 transitions. Second operand 4 states. [2020-10-12 19:10:00,433 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-12 19:10:03,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:03,278 INFO L93 Difference]: Finished difference Result 29518 states and 41987 transitions. [2020-10-12 19:10:03,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:10:03,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-12 19:10:03,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:03,330 INFO L225 Difference]: With dead ends: 29518 [2020-10-12 19:10:03,331 INFO L226 Difference]: Without dead ends: 23372 [2020-10-12 19:10:03,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:03,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23372 states. [2020-10-12 19:10:04,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23372 to 23370. [2020-10-12 19:10:04,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23370 states. [2020-10-12 19:10:04,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23370 states to 23370 states and 32193 transitions. [2020-10-12 19:10:04,635 INFO L78 Accepts]: Start accepts. Automaton has 23370 states and 32193 transitions. Word has length 150 [2020-10-12 19:10:04,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:04,635 INFO L479 AbstractCegarLoop]: Abstraction has 23370 states and 32193 transitions. [2020-10-12 19:10:04,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:10:04,635 INFO L276 IsEmpty]: Start isEmpty. Operand 23370 states and 32193 transitions. [2020-10-12 19:10:04,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-12 19:10:04,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:04,682 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] [2020-10-12 19:10:04,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:10:04,682 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:04,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:04,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1163108058, now seen corresponding path program 1 times [2020-10-12 19:10:04,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:04,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645858790] [2020-10-12 19:10:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 19:10:04,744 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 19:10:04,745 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 19:10:04,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:10:04,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 07:10:04 BoogieIcfgContainer [2020-10-12 19:10:04,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 19:10:04,828 INFO L168 Benchmark]: Toolchain (without parser) took 55705.24 ms. Allocated memory was 138.9 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 99.6 MB in the beginning and 151.1 MB in the end (delta: -51.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-10-12 19:10:04,829 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 19:10:04,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 809.48 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 99.4 MB in the beginning and 165.2 MB in the end (delta: -65.7 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-10-12 19:10:04,831 INFO L168 Benchmark]: Boogie Preprocessor took 93.55 ms. Allocated memory is still 201.3 MB. Free memory was 165.2 MB in the beginning and 161.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-10-12 19:10:04,831 INFO L168 Benchmark]: RCFGBuilder took 1443.43 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 161.0 MB in the beginning and 153.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. [2020-10-12 19:10:04,835 INFO L168 Benchmark]: TraceAbstraction took 53353.81 ms. Allocated memory was 233.8 MB in the beginning and 1.2 GB in the end (delta: 994.6 MB). Free memory was 153.8 MB in the beginning and 151.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 997.3 MB. Max. memory is 7.1 GB. [2020-10-12 19:10:04,847 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 809.48 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 99.4 MB in the beginning and 165.2 MB in the end (delta: -65.7 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.55 ms. Allocated memory is still 201.3 MB. Free memory was 165.2 MB in the beginning and 161.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1443.43 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 161.0 MB in the beginning and 153.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 53353.81 ms. Allocated memory was 233.8 MB in the beginning and 1.2 GB in the end (delta: 994.6 MB). Free memory was 153.8 MB in the beginning and 151.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 997.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 832]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L15] msg_t nomsg = (msg_t )-1; [L16] port_t p12 = 0; [L17] char p12_old = '\x0'; [L18] char p12_new = '\x0'; [L19] _Bool ep12 = 0; [L20] port_t p13 = 0; [L21] char p13_old = '\x0'; [L22] char p13_new = '\x0'; [L23] _Bool ep13 = 0; [L24] port_t p21 = 0; [L25] char p21_old = '\x0'; [L26] char p21_new = '\x0'; [L27] _Bool ep21 = 0; [L28] port_t p23 = 0; [L29] char p23_old = '\x0'; [L30] char p23_new = '\x0'; [L31] _Bool ep23 = 0; [L32] port_t p31 = 0; [L33] char p31_old = '\x0'; [L34] char p31_new = '\x0'; [L35] _Bool ep31 = 0; [L36] port_t p32 = 0; [L37] char p32_old = '\x0'; [L38] char p32_new = '\x0'; [L39] _Bool ep32 = 0; [L40] char id1 = '\x0'; [L41] unsigned char r1 = '\x0'; [L42] char st1 = '\x0'; [L43] char nl1 = '\x0'; [L44] char m1 = '\x0'; [L45] char max1 = '\x0'; [L46] _Bool mode1 = 0; [L47] char id2 = '\x0'; [L48] unsigned char r2 = '\x0'; [L49] char st2 = '\x0'; [L50] char nl2 = '\x0'; [L51] char m2 = '\x0'; [L52] char max2 = '\x0'; [L53] _Bool mode2 = 0; [L54] char id3 = '\x0'; [L55] unsigned char r3 = '\x0'; [L56] char st3 = '\x0'; [L57] char nl3 = '\x0'; [L58] char m3 = '\x0'; [L59] char max3 = '\x0'; [L60] _Bool mode3 = 0; [L64] void (*nodes[3])() = { &node1, &node2, &node3 }; [L68] int __return_1718; [L69] int __return_1846; [L70] int __return_1964; [L71] int __return_2082; [L72] int __return_2205; [L73] int __return_2315; [L76] int main__c1; [L77] int main__i2; [L78] main__c1 = 0 [L79] ep12 = __VERIFIER_nondet_bool() [L80] ep13 = __VERIFIER_nondet_bool() [L81] ep21 = __VERIFIER_nondet_bool() [L82] ep23 = __VERIFIER_nondet_bool() [L83] ep31 = __VERIFIER_nondet_bool() [L84] ep32 = __VERIFIER_nondet_bool() [L85] id1 = __VERIFIER_nondet_char() [L86] r1 = __VERIFIER_nondet_uchar() [L87] st1 = __VERIFIER_nondet_char() [L88] nl1 = __VERIFIER_nondet_char() [L89] m1 = __VERIFIER_nondet_char() [L90] max1 = __VERIFIER_nondet_char() [L91] mode1 = __VERIFIER_nondet_bool() [L92] id2 = __VERIFIER_nondet_char() [L93] r2 = __VERIFIER_nondet_uchar() [L94] st2 = __VERIFIER_nondet_char() [L95] nl2 = __VERIFIER_nondet_char() [L96] m2 = __VERIFIER_nondet_char() [L97] max2 = __VERIFIER_nondet_char() [L98] mode2 = __VERIFIER_nondet_bool() [L99] id3 = __VERIFIER_nondet_char() [L100] r3 = __VERIFIER_nondet_uchar() [L101] st3 = __VERIFIER_nondet_char() [L102] nl3 = __VERIFIER_nondet_char() [L103] m3 = __VERIFIER_nondet_char() [L104] max3 = __VERIFIER_nondet_char() [L105] mode3 = __VERIFIER_nondet_bool() [L107] _Bool init__r121; [L108] _Bool init__r131; [L109] _Bool init__r211; [L110] _Bool init__r231; [L111] _Bool init__r311; [L112] _Bool init__r321; [L113] _Bool init__r122; [L114] int init__tmp; [L115] _Bool init__r132; [L116] int init__tmp___0; [L117] _Bool init__r212; [L118] int init__tmp___1; [L119] _Bool init__r232; [L120] int init__tmp___2; [L121] _Bool init__r312; [L122] int init__tmp___3; [L123] _Bool init__r322; [L124] int init__tmp___4; [L125] int init__tmp___5; [L126] init__r121 = ep12 [L127] init__r131 = ep13 [L128] init__r211 = ep21 [L129] init__r231 = ep23 [L130] init__r311 = ep31 [L131] init__r321 = ep32 [L132] COND FALSE !(!(init__r121 == 0)) [L2244] COND FALSE !(!(init__r131 == 0)) [L2260] init__tmp = 0 [L136] init__r122 = (_Bool)init__tmp [L137] COND FALSE !(!(init__r131 == 0)) [L2221] COND FALSE !(!(init__r121 == 0)) [L2237] init__tmp___0 = 0 [L141] init__r132 = (_Bool)init__tmp___0 [L142] COND FALSE !(!(init__r211 == 0)) [L2198] COND FALSE !(!(init__r231 == 0)) [L2214] init__tmp___1 = 0 [L146] init__r212 = (_Bool)init__tmp___1 [L147] COND FALSE !(!(init__r231 == 0)) [L2175] COND FALSE !(!(init__r211 == 0)) [L2191] init__tmp___2 = 0 [L151] init__r232 = (_Bool)init__tmp___2 [L152] COND FALSE !(!(init__r311 == 0)) [L2152] COND FALSE !(!(init__r321 == 0)) [L2168] init__tmp___3 = 0 [L156] init__r312 = (_Bool)init__tmp___3 [L157] COND FALSE !(!(init__r321 == 0)) [L2129] COND FALSE !(!(init__r311 == 0)) [L2145] init__tmp___4 = 0 [L161] init__r322 = (_Bool)init__tmp___4 [L162] COND TRUE ((int)id1) != ((int)id2) [L164] COND TRUE ((int)id1) != ((int)id3) [L166] COND TRUE ((int)id2) != ((int)id3) [L168] COND TRUE ((int)id1) >= 0 [L170] COND TRUE ((int)id2) >= 0 [L172] COND TRUE ((int)id3) >= 0 [L174] COND TRUE ((int)r1) == 0 [L176] COND TRUE ((int)r2) == 0 [L178] COND TRUE ((int)r3) == 0 [L180] COND TRUE ((int)max1) == ((int)id1) [L182] COND TRUE ((int)max2) == ((int)id2) [L184] COND TRUE ((int)max3) == ((int)id3) [L186] COND TRUE ((int)st1) == 0 [L188] COND TRUE ((int)st2) == 0 [L190] COND TRUE ((int)st3) == 0 [L192] COND TRUE ((int)nl1) == 0 [L194] COND TRUE ((int)nl2) == 0 [L196] COND TRUE ((int)nl3) == 0 [L198] COND TRUE ((int)mode1) == 0 [L200] COND TRUE ((int)mode2) == 0 [L202] COND TRUE ((int)mode3) == 0 [L204] init__tmp___5 = 1 [L205] __return_1718 = init__tmp___5 [L206] main__i2 = __return_1718 [L207] COND TRUE main__i2 != 0 [L209] p12_old = nomsg [L210] p12_new = nomsg [L211] p13_old = nomsg [L212] p13_new = nomsg [L213] p21_old = nomsg [L214] p21_new = nomsg [L215] p23_old = nomsg [L216] p23_new = nomsg [L217] p31_old = nomsg [L218] p31_new = nomsg [L219] p32_old = nomsg [L220] p32_new = nomsg [L221] main__i2 = 0 [L223] COND FALSE !(!(mode1 == 0)) [L229] COND TRUE ((int)r1) < 2 [L231] COND FALSE !(!(ep12 == 0)) [L242] COND FALSE !(!(ep13 == 0)) [L253] mode1 = 1 [L255] COND FALSE !(!(mode2 == 0)) [L261] COND TRUE ((int)r2) < 2 [L263] COND FALSE !(!(ep21 == 0)) [L274] COND FALSE !(!(ep23 == 0)) [L285] mode2 = 1 [L287] COND FALSE !(!(mode3 == 0)) [L293] COND TRUE ((int)r3) < 2 [L295] COND FALSE !(!(ep31 == 0)) [L306] COND FALSE !(!(ep32 == 0)) [L317] mode3 = 1 [L318] p12_old = p12_new [L319] p12_new = nomsg [L320] p13_old = p13_new [L321] p13_new = nomsg [L322] p21_old = p21_new [L323] p21_new = nomsg [L324] p23_old = p23_new [L325] p23_new = nomsg [L326] p31_old = p31_new [L327] p31_new = nomsg [L328] p32_old = p32_new [L329] p32_new = nomsg [L331] int check__tmp; [L332] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L334] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L336] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L338] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L340] COND FALSE !(((int)r1) >= 2) [L346] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L348] COND TRUE ((int)r1) < 2 [L350] COND FALSE !(((int)r1) >= 2) [L356] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L358] COND TRUE ((int)r1) < 2 [L360] check__tmp = 1 [L361] __return_1846 = check__tmp [L362] main__c1 = __return_1846 [L364] _Bool __tmp_1; [L365] __tmp_1 = main__c1 [L366] _Bool assert__arg; [L367] assert__arg = __tmp_1 [L368] COND FALSE !(assert__arg == 0) [L375] COND TRUE !(mode1 == 0) [L377] COND FALSE !(r1 == 255) [L383] r1 = r1 + 1 [L384] COND FALSE !(!(ep21 == 0)) [L392] COND FALSE !(!(ep31 == 0)) [L400] COND FALSE !(((int)r1) == 2) [L406] mode1 = 0 [L408] COND TRUE !(mode2 == 0) [L410] COND FALSE !(r2 == 255) [L416] r2 = r2 + 1 [L417] COND FALSE !(!(ep12 == 0)) [L425] COND FALSE !(!(ep32 == 0)) [L433] COND FALSE !(((int)r2) == 2) [L439] mode2 = 0 [L441] COND TRUE !(mode3 == 0) [L443] COND FALSE !(r3 == 255) [L449] r3 = r3 + 1 [L450] COND FALSE !(!(ep13 == 0)) [L458] COND FALSE !(!(ep23 == 0)) [L466] COND FALSE !(((int)r3) == 2) [L472] mode3 = 0 [L473] p12_old = p12_new [L474] p12_new = nomsg [L475] p13_old = p13_new [L476] p13_new = nomsg [L477] p21_old = p21_new [L478] p21_new = nomsg [L479] p23_old = p23_new [L480] p23_new = nomsg [L481] p31_old = p31_new [L482] p31_new = nomsg [L483] p32_old = p32_new [L484] p32_new = nomsg [L486] int check__tmp; [L487] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L489] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L491] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L493] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L495] COND FALSE !(((int)r1) >= 2) [L501] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L503] COND TRUE ((int)r1) < 2 [L505] COND FALSE !(((int)r1) >= 2) [L511] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L513] COND TRUE ((int)r1) < 2 [L515] check__tmp = 1 [L516] __return_1964 = check__tmp [L517] main__c1 = __return_1964 [L519] _Bool __tmp_2; [L520] __tmp_2 = main__c1 [L521] _Bool assert__arg; [L522] assert__arg = __tmp_2 [L523] COND FALSE !(assert__arg == 0) [L530] COND FALSE !(!(mode1 == 0)) [L536] COND TRUE ((int)r1) < 2 [L538] COND FALSE !(!(ep12 == 0)) [L549] COND FALSE !(!(ep13 == 0)) [L560] mode1 = 1 [L562] COND FALSE !(!(mode2 == 0)) [L568] COND TRUE ((int)r2) < 2 [L570] COND FALSE !(!(ep21 == 0)) [L581] COND FALSE !(!(ep23 == 0)) [L592] mode2 = 1 [L594] COND FALSE !(!(mode3 == 0)) [L600] COND TRUE ((int)r3) < 2 [L602] COND FALSE !(!(ep31 == 0)) [L613] COND FALSE !(!(ep32 == 0)) [L624] mode3 = 1 [L625] p12_old = p12_new [L626] p12_new = nomsg [L627] p13_old = p13_new [L628] p13_new = nomsg [L629] p21_old = p21_new [L630] p21_new = nomsg [L631] p23_old = p23_new [L632] p23_new = nomsg [L633] p31_old = p31_new [L634] p31_new = nomsg [L635] p32_old = p32_new [L636] p32_new = nomsg [L638] int check__tmp; [L639] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L641] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L643] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L645] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L647] COND FALSE !(((int)r1) >= 2) [L653] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L655] COND TRUE ((int)r1) < 2 [L657] COND FALSE !(((int)r1) >= 2) [L663] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L665] COND TRUE ((int)r1) < 2 [L667] check__tmp = 1 [L668] __return_2082 = check__tmp [L669] main__c1 = __return_2082 [L671] _Bool __tmp_3; [L672] __tmp_3 = main__c1 [L673] _Bool assert__arg; [L674] assert__arg = __tmp_3 [L675] COND FALSE !(assert__arg == 0) [L682] COND TRUE !(mode1 == 0) [L684] COND FALSE !(r1 == 255) [L690] r1 = r1 + 1 [L691] COND FALSE !(!(ep21 == 0)) [L699] COND FALSE !(!(ep31 == 0)) [L707] COND TRUE ((int)r1) == 2 [L709] COND TRUE ((int)max1) == ((int)id1) [L711] st1 = 1 [L713] mode1 = 0 [L715] COND TRUE !(mode2 == 0) [L717] COND FALSE !(r2 == 255) [L723] r2 = r2 + 1 [L724] COND FALSE !(!(ep12 == 0)) [L732] COND FALSE !(!(ep32 == 0)) [L740] COND TRUE ((int)r2) == 2 [L742] COND TRUE ((int)max2) == ((int)id2) [L744] st2 = 1 [L746] mode2 = 0 [L748] COND TRUE !(mode3 == 0) [L750] COND FALSE !(r3 == 255) [L756] r3 = r3 + 1 [L757] COND FALSE !(!(ep13 == 0)) [L765] COND FALSE !(!(ep23 == 0)) [L773] COND TRUE ((int)r3) == 2 [L775] COND TRUE ((int)max3) == ((int)id3) [L777] st3 = 1 [L779] mode3 = 0 [L780] p12_old = p12_new [L781] p12_new = nomsg [L782] p13_old = p13_new [L783] p13_new = nomsg [L784] p21_old = p21_new [L785] p21_new = nomsg [L786] p23_old = p23_new [L787] p23_new = nomsg [L788] p31_old = p31_new [L789] p31_new = nomsg [L790] p32_old = p32_new [L791] p32_new = nomsg [L793] int check__tmp; [L794] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1433] check__tmp = 0 [L822] __return_2205 = check__tmp [L823] main__c1 = __return_2205 [L826] _Bool __tmp_4; [L827] __tmp_4 = main__c1 [L828] _Bool assert__arg; [L829] assert__arg = __tmp_4 [L830] COND TRUE assert__arg == 0 [L832] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 315 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 53.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 20.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5136 SDtfs, 5612 SDslu, 2891 SDs, 0 SdLazy, 5585 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23370occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 27.7s InterpolantComputationTime, 1179 NumberOfCodeBlocks, 1179 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1022 ConstructedInterpolants, 0 QuantifiedInterpolants, 934520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...