/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.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:18:32,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:18:32,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:18:32,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:18:32,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:18:32,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:18:32,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:18:32,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:18:32,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:18:32,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:18:32,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:18:32,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:18:32,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:18:32,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:18:32,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:18:32,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:18:32,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:18:32,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:18:32,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:18:32,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:18:32,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:18:32,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:18:32,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:18:32,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:18:32,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:18:32,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:18:32,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:18:32,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:18:32,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:18:32,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:18:32,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:18:32,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:18:32,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:18:32,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:18:32,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:18:32,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:18:32,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:18:32,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:18:32,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:18:32,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:18:32,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:18:32,113 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 19:18:32,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:18:32,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:18:32,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:18:32,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:18:32,138 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:18:32,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:18:32,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:18:32,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:18:32,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:18:32,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:18:32,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:18:32,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:18:32,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:18:32,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:18:32,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:18:32,140 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:18:32,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:18:32,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:18:32,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:18:32,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:18:32,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:18:32,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:18:32,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:18:32,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:18:32,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:18:32,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:18:32,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:18:32,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:18:32,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:18:32,143 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 19:18:32,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:18:32,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:18:32,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:18:32,451 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:18:32,452 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:18:32,452 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:18:32,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8db7165a/e8774f8fd1c8417cb8c8ec01fd3a9704/FLAG2904108ff [2020-10-12 19:18:33,071 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:18:33,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:18:33,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8db7165a/e8774f8fd1c8417cb8c8ec01fd3a9704/FLAG2904108ff [2020-10-12 19:18:33,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8db7165a/e8774f8fd1c8417cb8c8ec01fd3a9704 [2020-10-12 19:18:33,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:18:33,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:18:33,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:18:33,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:18:33,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:18:33,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:18:33" (1/1) ... [2020-10-12 19:18:33,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@329369a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:33, skipping insertion in model container [2020-10-12 19:18:33,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:18:33" (1/1) ... [2020-10-12 19:18:33,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:18:33,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:18:33,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:18:33,974 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:18:34,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:18:34,157 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:18:34,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:34 WrapperNode [2020-10-12 19:18:34,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:18:34,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:18:34,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:18:34,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:18:34,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:34" (1/1) ... [2020-10-12 19:18:34,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:34" (1/1) ... [2020-10-12 19:18:34,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:34" (1/1) ... [2020-10-12 19:18:34,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:34" (1/1) ... [2020-10-12 19:18:34,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:34" (1/1) ... [2020-10-12 19:18:34,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:34" (1/1) ... [2020-10-12 19:18:34,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:34" (1/1) ... [2020-10-12 19:18:34,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:18:34,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:18:34,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:18:34,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:18:34,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:34" (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 19:18:34,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:18:34,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:18:34,347 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:18:34,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:18:34,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:18:34,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:18:34,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:18:34,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:18:34,349 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:18:34,349 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:18:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:18:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:18:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:18:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:18:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:18:34,351 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:18:34,351 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:18:34,352 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:18:34,352 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:18:34,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:18:34,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:18:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:18:35,783 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:18:35,783 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:18:35,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:18:35 BoogieIcfgContainer [2020-10-12 19:18:35,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:18:35,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:18:35,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:18:35,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:18:35,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:18:33" (1/3) ... [2020-10-12 19:18:35,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79578e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:18:35, skipping insertion in model container [2020-10-12 19:18:35,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:34" (2/3) ... [2020-10-12 19:18:35,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79578e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:18:35, skipping insertion in model container [2020-10-12 19:18:35,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:18:35" (3/3) ... [2020-10-12 19:18:35,799 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:18:35,809 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:18:35,825 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:18:35,840 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:18:35,866 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:18:35,866 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:18:35,866 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:18:35,866 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:18:35,867 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:18:35,867 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:18:35,867 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:18:35,867 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:18:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-12 19:18:35,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:18:35,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:35,913 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] [2020-10-12 19:18:35,914 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:35,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:35,921 INFO L82 PathProgramCache]: Analyzing trace with hash -425912833, now seen corresponding path program 1 times [2020-10-12 19:18:35,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:35,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909833660] [2020-10-12 19:18:35,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:36,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:38,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:41,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:41,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:18:41,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:18:41,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:18:41,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:18:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:18:41,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 19:18:41,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:18:42,174 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:18:42,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:42,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:42,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:42,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:42,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 19:18:42,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:42,255 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 19:18:42,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909833660] [2020-10-12 19:18:42,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:42,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:18:42,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163162183] [2020-10-12 19:18:42,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:18:42,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:42,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:18:42,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:18:42,283 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 7 states. [2020-10-12 19:18:42,870 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-12 19:18:45,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:45,367 INFO L93 Difference]: Finished difference Result 1423 states and 2426 transitions. [2020-10-12 19:18:45,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:18:45,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-12 19:18:45,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:45,394 INFO L225 Difference]: With dead ends: 1423 [2020-10-12 19:18:45,395 INFO L226 Difference]: Without dead ends: 1265 [2020-10-12 19:18:45,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:18:45,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2020-10-12 19:18:45,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 459. [2020-10-12 19:18:45,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-12 19:18:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 764 transitions. [2020-10-12 19:18:45,495 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 764 transitions. Word has length 114 [2020-10-12 19:18:45,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:45,496 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 764 transitions. [2020-10-12 19:18:45,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:18:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 764 transitions. [2020-10-12 19:18:45,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 19:18:45,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:45,503 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] [2020-10-12 19:18:45,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:18:45,504 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:45,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:45,504 INFO L82 PathProgramCache]: Analyzing trace with hash -384564213, now seen corresponding path program 1 times [2020-10-12 19:18:45,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:45,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771375149] [2020-10-12 19:18:45,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:45,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:45,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:46,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:46,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:46,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:50,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:50,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 19:18:50,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:18:50,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-12 19:18:50,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:18:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 19:18:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 19:18:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:51,043 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:18:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:51,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:51,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:51,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:51,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 19:18:51,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:51,156 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 19:18:51,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771375149] [2020-10-12 19:18:51,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:51,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:18:51,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584821752] [2020-10-12 19:18:51,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:18:51,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:51,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:18:51,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:18:51,160 INFO L87 Difference]: Start difference. First operand 459 states and 764 transitions. Second operand 8 states. [2020-10-12 19:18:51,541 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-12 19:18:54,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:54,472 INFO L93 Difference]: Finished difference Result 3271 states and 5501 transitions. [2020-10-12 19:18:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:18:54,473 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2020-10-12 19:18:54,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:54,490 INFO L225 Difference]: With dead ends: 3271 [2020-10-12 19:18:54,491 INFO L226 Difference]: Without dead ends: 3005 [2020-10-12 19:18:54,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:18:54,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-10-12 19:18:54,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 1179. [2020-10-12 19:18:54,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2020-10-12 19:18:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1979 transitions. [2020-10-12 19:18:54,606 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1979 transitions. Word has length 115 [2020-10-12 19:18:54,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:54,607 INFO L479 AbstractCegarLoop]: Abstraction has 1179 states and 1979 transitions. [2020-10-12 19:18:54,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:18:54,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1979 transitions. [2020-10-12 19:18:54,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 19:18:54,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:54,610 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] [2020-10-12 19:18:54,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:18:54,611 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:54,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:54,611 INFO L82 PathProgramCache]: Analyzing trace with hash 901801030, now seen corresponding path program 1 times [2020-10-12 19:18:54,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:54,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181934648] [2020-10-12 19:18:54,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:54,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:59,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:59,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 19:18:59,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:18:59,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 19:18:59,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:18:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:18:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 19:18:59,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:00,249 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:19:00,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:00,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:00,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:00,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:00,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:00,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 19:19:00,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:00,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:00,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:00,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:00,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:19:00,352 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 19:19:00,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181934648] [2020-10-12 19:19:00,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:00,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:19:00,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86570470] [2020-10-12 19:19:00,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:19:00,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:00,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:19:00,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:19:00,354 INFO L87 Difference]: Start difference. First operand 1179 states and 1979 transitions. Second operand 8 states. [2020-10-12 19:19:00,906 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-12 19:19:04,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:04,562 INFO L93 Difference]: Finished difference Result 9378 states and 15770 transitions. [2020-10-12 19:19:04,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:19:04,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2020-10-12 19:19:04,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:04,623 INFO L225 Difference]: With dead ends: 9378 [2020-10-12 19:19:04,624 INFO L226 Difference]: Without dead ends: 8489 [2020-10-12 19:19:04,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:19:04,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8489 states. [2020-10-12 19:19:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8489 to 3287. [2020-10-12 19:19:05,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3287 states. [2020-10-12 19:19:05,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 5521 transitions. [2020-10-12 19:19:05,064 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 5521 transitions. Word has length 116 [2020-10-12 19:19:05,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:05,066 INFO L479 AbstractCegarLoop]: Abstraction has 3287 states and 5521 transitions. [2020-10-12 19:19:05,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:19:05,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 5521 transitions. [2020-10-12 19:19:05,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 19:19:05,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:05,071 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] [2020-10-12 19:19:05,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:19:05,072 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:05,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:05,073 INFO L82 PathProgramCache]: Analyzing trace with hash 2128975922, now seen corresponding path program 1 times [2020-10-12 19:19:05,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:05,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929102299] [2020-10-12 19:19:05,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:05,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:05,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:05,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:06,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:06,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:10,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 19:19:10,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:19:10,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:19:10,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:19:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:19:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 19:19:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:10,677 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:19:10,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:10,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:10,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:10,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:19:10,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:10,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:10,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:10,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:10,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:19:10,758 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 19:19:10,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929102299] [2020-10-12 19:19:10,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:10,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:19:10,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456790336] [2020-10-12 19:19:10,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:19:10,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:10,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:19:10,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:19:10,762 INFO L87 Difference]: Start difference. First operand 3287 states and 5521 transitions. Second operand 8 states. [2020-10-12 19:19:11,364 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-12 19:19:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:15,282 INFO L93 Difference]: Finished difference Result 26706 states and 44819 transitions. [2020-10-12 19:19:15,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:19:15,283 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-10-12 19:19:15,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:15,386 INFO L225 Difference]: With dead ends: 26706 [2020-10-12 19:19:15,386 INFO L226 Difference]: Without dead ends: 23820 [2020-10-12 19:19:15,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:19:15,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23820 states. [2020-10-12 19:19:16,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23820 to 9135. [2020-10-12 19:19:16,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9135 states. [2020-10-12 19:19:16,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9135 states to 9135 states and 15319 transitions. [2020-10-12 19:19:16,423 INFO L78 Accepts]: Start accepts. Automaton has 9135 states and 15319 transitions. Word has length 117 [2020-10-12 19:19:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:16,423 INFO L479 AbstractCegarLoop]: Abstraction has 9135 states and 15319 transitions. [2020-10-12 19:19:16,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:19:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 9135 states and 15319 transitions. [2020-10-12 19:19:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 19:19:16,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:16,429 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] [2020-10-12 19:19:16,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:19:16,430 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:16,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:16,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1521249933, now seen corresponding path program 1 times [2020-10-12 19:19:16,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:16,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181900370] [2020-10-12 19:19:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:16,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:16,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:16,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:16,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:17,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:17,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:21,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:21,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 19:19:21,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:19:21,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:19:21,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:19:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:19:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 19:19:21,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:21,875 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:19:21,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:21,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:21,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:21,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:21,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:21,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:19:21,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:21,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:21,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:21,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:21,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:21,931 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 19:19:21,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181900370] [2020-10-12 19:19:21,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:21,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:19:21,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836321739] [2020-10-12 19:19:21,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:19:21,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:21,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:19:21,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:19:21,934 INFO L87 Difference]: Start difference. First operand 9135 states and 15319 transitions. Second operand 8 states. [2020-10-12 19:19:22,366 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-12 19:19:28,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:28,971 INFO L93 Difference]: Finished difference Result 77348 states and 129517 transitions. [2020-10-12 19:19:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:19:28,971 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-10-12 19:19:28,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:29,151 INFO L225 Difference]: With dead ends: 77348 [2020-10-12 19:19:29,151 INFO L226 Difference]: Without dead ends: 68691 [2020-10-12 19:19:29,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:19:29,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68691 states. [2020-10-12 19:19:32,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68691 to 25437. [2020-10-12 19:19:32,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25437 states. [2020-10-12 19:19:32,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25437 states to 25437 states and 42559 transitions. [2020-10-12 19:19:32,277 INFO L78 Accepts]: Start accepts. Automaton has 25437 states and 42559 transitions. Word has length 118 [2020-10-12 19:19:32,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:32,277 INFO L479 AbstractCegarLoop]: Abstraction has 25437 states and 42559 transitions. [2020-10-12 19:19:32,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:19:32,277 INFO L276 IsEmpty]: Start isEmpty. Operand 25437 states and 42559 transitions. [2020-10-12 19:19:32,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 19:19:32,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:32,280 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] [2020-10-12 19:19:32,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:19:32,281 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:32,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:32,281 INFO L82 PathProgramCache]: Analyzing trace with hash -540354100, now seen corresponding path program 1 times [2020-10-12 19:19:32,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:32,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326585133] [2020-10-12 19:19:32,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:32,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:32,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:32,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:32,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:32,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:33,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:33,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:33,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:37,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 19:19:37,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:19:37,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:19:37,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:37,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:37,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:19:37,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 19:19:37,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:19:37,757 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:19:37,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:37,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:37,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:37,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:37,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:19:37,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:37,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:37,824 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 19:19:37,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326585133] [2020-10-12 19:19:37,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:37,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:37,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782517974] [2020-10-12 19:19:37,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:37,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:37,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:37,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:37,826 INFO L87 Difference]: Start difference. First operand 25437 states and 42559 transitions. Second operand 5 states. [2020-10-12 19:19:43,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:43,329 INFO L93 Difference]: Finished difference Result 75174 states and 125854 transitions. [2020-10-12 19:19:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:19:43,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 19:19:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:43,460 INFO L225 Difference]: With dead ends: 75174 [2020-10-12 19:19:43,460 INFO L226 Difference]: Without dead ends: 49784 [2020-10-12 19:19:43,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:19:43,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49784 states. [2020-10-12 19:19:47,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49784 to 49782. [2020-10-12 19:19:47,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49782 states. [2020-10-12 19:19:47,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49782 states to 49782 states and 82960 transitions. [2020-10-12 19:19:47,896 INFO L78 Accepts]: Start accepts. Automaton has 49782 states and 82960 transitions. Word has length 120 [2020-10-12 19:19:47,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:47,896 INFO L479 AbstractCegarLoop]: Abstraction has 49782 states and 82960 transitions. [2020-10-12 19:19:47,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:47,896 INFO L276 IsEmpty]: Start isEmpty. Operand 49782 states and 82960 transitions. [2020-10-12 19:19:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 19:19:47,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:47,901 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] [2020-10-12 19:19:47,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:19:47,901 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:47,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:47,901 INFO L82 PathProgramCache]: Analyzing trace with hash 140817538, now seen corresponding path program 1 times [2020-10-12 19:19:47,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:47,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900149528] [2020-10-12 19:19:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:47,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:48,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:48,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:48,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:48,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:48,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:52,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 19:19:52,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:19:52,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 19:19:52,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:19:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:19:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:19:52,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:54,435 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:19:54,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:54,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:54,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:54,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:54,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:19:54,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:54,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:54,472 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 19:19:54,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900149528] [2020-10-12 19:19:54,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:54,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:19:54,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358713067] [2020-10-12 19:19:54,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:19:54,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:54,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:19:54,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:19:54,474 INFO L87 Difference]: Start difference. First operand 49782 states and 82960 transitions. Second operand 7 states. [2020-10-12 19:19:54,872 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-10-12 19:20:11,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:11,423 INFO L93 Difference]: Finished difference Result 240275 states and 400262 transitions. [2020-10-12 19:20:11,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:20:11,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-12 19:20:11,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:11,746 INFO L225 Difference]: With dead ends: 240275 [2020-10-12 19:20:11,746 INFO L226 Difference]: Without dead ends: 191415 [2020-10-12 19:20:11,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:20:11,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191415 states. [2020-10-12 19:20:21,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191415 to 94225. [2020-10-12 19:20:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94225 states. [2020-10-12 19:20:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94225 states to 94225 states and 156723 transitions. [2020-10-12 19:20:21,701 INFO L78 Accepts]: Start accepts. Automaton has 94225 states and 156723 transitions. Word has length 120 [2020-10-12 19:20:21,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:21,701 INFO L479 AbstractCegarLoop]: Abstraction has 94225 states and 156723 transitions. [2020-10-12 19:20:21,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:20:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 94225 states and 156723 transitions. [2020-10-12 19:20:21,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 19:20:21,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:21,705 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] [2020-10-12 19:20:21,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:20:21,705 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:21,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:21,705 INFO L82 PathProgramCache]: Analyzing trace with hash 286337891, now seen corresponding path program 1 times [2020-10-12 19:20:21,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:21,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506629519] [2020-10-12 19:20:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:21,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:21,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:21,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:21,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:22,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:22,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:22,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:22,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:23,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:26,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:26,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 19:20:26,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:20:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:20:26,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:20:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:20:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:20:26,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:27,131 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:20:27,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:27,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:27,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:27,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:27,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:20:27,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:27,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:27,168 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 19:20:27,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506629519] [2020-10-12 19:20:27,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:27,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:20:27,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780416615] [2020-10-12 19:20:27,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:20:27,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:27,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:20:27,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:20:27,171 INFO L87 Difference]: Start difference. First operand 94225 states and 156723 transitions. Second operand 7 states. [2020-10-12 19:20:27,583 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-10-12 19:20:48,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:48,086 INFO L93 Difference]: Finished difference Result 304207 states and 505717 transitions. [2020-10-12 19:20:48,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:20:48,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-12 19:20:48,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:48,481 INFO L225 Difference]: With dead ends: 304207 [2020-10-12 19:20:48,481 INFO L226 Difference]: Without dead ends: 250018 [2020-10-12 19:20:48,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:20:48,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250018 states. [2020-10-12 19:21:03,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250018 to 152620. [2020-10-12 19:21:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152620 states. [2020-10-12 19:21:04,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152620 states to 152620 states and 253715 transitions. [2020-10-12 19:21:04,006 INFO L78 Accepts]: Start accepts. Automaton has 152620 states and 253715 transitions. Word has length 120 [2020-10-12 19:21:04,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:04,006 INFO L479 AbstractCegarLoop]: Abstraction has 152620 states and 253715 transitions. [2020-10-12 19:21:04,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:21:04,006 INFO L276 IsEmpty]: Start isEmpty. Operand 152620 states and 253715 transitions. [2020-10-12 19:21:04,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 19:21:04,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:04,009 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] [2020-10-12 19:21:04,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:21:04,010 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:04,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:04,010 INFO L82 PathProgramCache]: Analyzing trace with hash 142676029, now seen corresponding path program 1 times [2020-10-12 19:21:04,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:04,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132351586] [2020-10-12 19:21:04,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:04,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:04,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:04,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:04,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:04,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:05,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:09,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:09,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 19:21:09,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:21:09,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:21:09,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:21:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:21:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:21:09,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:09,566 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:21:09,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:09,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:09,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:09,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:09,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:09,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:21:09,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:09,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:09,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:09,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:09,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:09,628 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 19:21:09,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132351586] [2020-10-12 19:21:09,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:09,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:21:09,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130962701] [2020-10-12 19:21:09,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:21:09,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:09,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:21:09,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:21:09,633 INFO L87 Difference]: Start difference. First operand 152620 states and 253715 transitions. Second operand 7 states. [2020-10-12 19:21:10,087 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:21:31,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:31,956 INFO L93 Difference]: Finished difference Result 400862 states and 666406 transitions. [2020-10-12 19:21:31,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:21:31,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-12 19:21:31,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:32,342 INFO L225 Difference]: With dead ends: 400862 [2020-10-12 19:21:32,342 INFO L226 Difference]: Without dead ends: 249164 [2020-10-12 19:21:32,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:21:32,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249164 states. [2020-10-12 19:21:49,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249164 to 152620. [2020-10-12 19:21:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152620 states. [2020-10-12 19:21:49,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152620 states to 152620 states and 253587 transitions. [2020-10-12 19:21:49,893 INFO L78 Accepts]: Start accepts. Automaton has 152620 states and 253587 transitions. Word has length 120 [2020-10-12 19:21:49,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:49,893 INFO L479 AbstractCegarLoop]: Abstraction has 152620 states and 253587 transitions. [2020-10-12 19:21:49,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:21:49,893 INFO L276 IsEmpty]: Start isEmpty. Operand 152620 states and 253587 transitions. [2020-10-12 19:21:49,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 19:21:49,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:49,897 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] [2020-10-12 19:21:49,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:21:49,897 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:49,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:49,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1151918923, now seen corresponding path program 1 times [2020-10-12 19:21:49,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:49,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100040215] [2020-10-12 19:21:49,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:49,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:50,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:50,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:50,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:50,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:54,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:54,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:54,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:54,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:54,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 19:21:54,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:21:54,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 19:21:54,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:21:54,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:21:54,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:21:54,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:57,358 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 5 [2020-10-12 19:21:57,698 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:21:57,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:57,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:57,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:57,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:57,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:57,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:21:57,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:57,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:57,740 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 19:21:57,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100040215] [2020-10-12 19:21:57,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:57,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:21:57,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747277594] [2020-10-12 19:21:57,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:21:57,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:57,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:21:57,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:21:57,742 INFO L87 Difference]: Start difference. First operand 152620 states and 253587 transitions. Second operand 7 states. [2020-10-12 19:21:58,140 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 256