/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+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:19:30,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:19:30,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:19:30,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:19:30,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:19:30,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:19:30,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:19:30,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:19:30,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:19:30,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:19:30,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:19:30,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:19:30,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:19:30,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:19:30,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:19:30,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:19:30,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:19:30,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:19:30,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:19:30,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:19:30,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:19:30,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:19:30,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:19:30,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:19:30,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:19:30,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:19:30,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:19:30,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:19:30,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:19:30,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:19:30,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:19:30,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:19:30,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:19:30,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:19:30,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:19:30,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:19:30,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:19:30,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:19:30,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:19:30,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:19:30,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:19:30,131 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 19:19:30,167 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:19:30,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:19:30,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:19:30,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:19:30,170 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:19:30,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:19:30,170 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:19:30,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:19:30,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:19:30,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:19:30,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:19:30,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:19:30,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:19:30,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:19:30,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:19:30,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:19:30,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:19:30,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:19:30,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:19:30,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:19:30,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:19:30,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:19:30,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:19:30,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:19:30,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:19:30,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:19:30,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:19:30,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:19:30,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:19:30,177 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 19:19:30,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:19:30,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:19:30,458 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:19:30,460 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:19:30,460 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:19:30,461 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:19:30,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/384d47aea/c76e096dd05d4b7b82a589b36587effe/FLAGceeb8fcc3 [2020-10-12 19:19:31,149 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:19:31,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:19:31,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/384d47aea/c76e096dd05d4b7b82a589b36587effe/FLAGceeb8fcc3 [2020-10-12 19:19:31,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/384d47aea/c76e096dd05d4b7b82a589b36587effe [2020-10-12 19:19:31,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:19:31,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:19:31,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:19:31,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:19:31,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:19:31,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:19:31" (1/1) ... [2020-10-12 19:19:31,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683cf205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:19:31, skipping insertion in model container [2020-10-12 19:19:31,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:19:31" (1/1) ... [2020-10-12 19:19:31,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:19:31,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:19:32,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:19:32,376 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:19:32,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:19:32,875 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:19:32,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:19:32 WrapperNode [2020-10-12 19:19:32,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:19:32,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:19:32,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:19:32,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:19:32,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:19:32" (1/1) ... [2020-10-12 19:19:32,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:19:32" (1/1) ... [2020-10-12 19:19:32,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:19:32" (1/1) ... [2020-10-12 19:19:32,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:19:32" (1/1) ... [2020-10-12 19:19:32,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:19:32" (1/1) ... [2020-10-12 19:19:33,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:19:32" (1/1) ... [2020-10-12 19:19:33,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:19:32" (1/1) ... [2020-10-12 19:19:33,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:19:33,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:19:33,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:19:33,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:19:33,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:19:32" (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 19:19:33,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:19:33,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:19:33,117 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:19:33,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:19:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:19:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:19:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:19:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:19:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:19:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:19:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:19:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:19:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:19:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:19:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:19:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:19:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:19:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:19:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:19:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:19:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:19:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:19:35,649 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:19:35,649 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:19:35,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:19:35 BoogieIcfgContainer [2020-10-12 19:19:35,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:19:35,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:19:35,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:19:35,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:19:35,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:19:31" (1/3) ... [2020-10-12 19:19:35,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b1a7c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:19:35, skipping insertion in model container [2020-10-12 19:19:35,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:19:32" (2/3) ... [2020-10-12 19:19:35,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b1a7c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:19:35, skipping insertion in model container [2020-10-12 19:19:35,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:19:35" (3/3) ... [2020-10-12 19:19:35,669 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:19:35,680 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:19:35,689 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:19:35,704 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:19:35,738 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:19:35,738 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:19:35,738 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:19:35,739 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:19:35,739 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:19:35,739 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:19:35,739 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:19:35,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:19:35,777 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states. [2020-10-12 19:19:35,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-12 19:19:35,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:35,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:19:35,808 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:35,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:35,816 INFO L82 PathProgramCache]: Analyzing trace with hash 373838738, now seen corresponding path program 1 times [2020-10-12 19:19:35,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:35,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313242191] [2020-10-12 19:19:35,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:39,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:39,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:39,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:39,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:40,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:40,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:40,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:40,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:41,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:41,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:41,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:41,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:41,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-12 19:19:41,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:19:41,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-12 19:19:41,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:19:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 19:19:41,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:19:42,777 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:19:42,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:42,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:42,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:42,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:42,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 19:19:42,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:42,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:42,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:42,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:42,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:43,079 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 19:19:43,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313242191] [2020-10-12 19:19:43,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:43,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:43,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290154339] [2020-10-12 19:19:43,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:43,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:43,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:43,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:43,110 INFO L87 Difference]: Start difference. First operand 737 states. Second operand 5 states. [2020-10-12 19:19:51,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:51,161 INFO L93 Difference]: Finished difference Result 2129 states and 3789 transitions. [2020-10-12 19:19:51,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:19:51,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-12 19:19:51,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:51,205 INFO L225 Difference]: With dead ends: 2129 [2020-10-12 19:19:51,205 INFO L226 Difference]: Without dead ends: 1429 [2020-10-12 19:19:51,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:19:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2020-10-12 19:19:51,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1427. [2020-10-12 19:19:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1427 states. [2020-10-12 19:19:51,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 2197 transitions. [2020-10-12 19:19:51,397 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 2197 transitions. Word has length 314 [2020-10-12 19:19:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:51,401 INFO L479 AbstractCegarLoop]: Abstraction has 1427 states and 2197 transitions. [2020-10-12 19:19:51,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 2197 transitions. [2020-10-12 19:19:51,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-12 19:19:51,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:51,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:19:51,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:19:51,416 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:51,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:51,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1585852856, now seen corresponding path program 1 times [2020-10-12 19:19:51,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:51,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827884388] [2020-10-12 19:19:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:51,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:51,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:51,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:53,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:53,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:53,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:53,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:53,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:56,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-12 19:19:56,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:19:56,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:19:56,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:19:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 19:19:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:57,110 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:19:57,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:57,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:57,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:57,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:57,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:57,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:19:57,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:57,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:57,430 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 19:19:57,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827884388] [2020-10-12 19:19:57,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:57,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:57,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064268499] [2020-10-12 19:19:57,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:57,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:57,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:57,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:57,438 INFO L87 Difference]: Start difference. First operand 1427 states and 2197 transitions. Second operand 5 states. [2020-10-12 19:20:05,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:05,608 INFO L93 Difference]: Finished difference Result 4190 states and 6441 transitions. [2020-10-12 19:20:05,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:05,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-12 19:20:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:05,626 INFO L225 Difference]: With dead ends: 4190 [2020-10-12 19:20:05,627 INFO L226 Difference]: Without dead ends: 2788 [2020-10-12 19:20:05,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:20:05,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2020-10-12 19:20:05,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 2786. [2020-10-12 19:20:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-12 19:20:05,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 4257 transitions. [2020-10-12 19:20:05,781 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 4257 transitions. Word has length 316 [2020-10-12 19:20:05,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:05,782 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 4257 transitions. [2020-10-12 19:20:05,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:05,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 4257 transitions. [2020-10-12 19:20:05,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-12 19:20:05,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:05,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:20:05,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:20:05,799 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:05,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:05,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1241105640, now seen corresponding path program 1 times [2020-10-12 19:20:05,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:05,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458602962] [2020-10-12 19:20:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:05,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:06,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:06,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:06,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:06,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:06,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:07,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:07,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:07,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:07,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:07,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:07,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:07,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:10,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:10,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-12 19:20:10,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:20:10,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:20:10,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:10,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:10,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:20:10,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 19:20:10,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:11,549 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:20:11,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:11,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:11,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:11,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:11,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:11,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:20:11,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:11,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:11,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:11,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:11,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:11,789 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 19:20:11,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458602962] [2020-10-12 19:20:11,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:11,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:11,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40403469] [2020-10-12 19:20:11,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:11,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:11,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:11,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:11,793 INFO L87 Difference]: Start difference. First operand 2786 states and 4257 transitions. Second operand 5 states. [2020-10-12 19:20:18,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:18,514 INFO L93 Difference]: Finished difference Result 8063 states and 12272 transitions. [2020-10-12 19:20:18,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:18,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-12 19:20:18,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:18,548 INFO L225 Difference]: With dead ends: 8063 [2020-10-12 19:20:18,548 INFO L226 Difference]: Without dead ends: 5401 [2020-10-12 19:20:18,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:20:18,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5401 states. [2020-10-12 19:20:18,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5401 to 5399. [2020-10-12 19:20:18,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5399 states. [2020-10-12 19:20:18,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5399 states to 5399 states and 8174 transitions. [2020-10-12 19:20:18,787 INFO L78 Accepts]: Start accepts. Automaton has 5399 states and 8174 transitions. Word has length 318 [2020-10-12 19:20:18,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:18,788 INFO L479 AbstractCegarLoop]: Abstraction has 5399 states and 8174 transitions. [2020-10-12 19:20:18,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:18,788 INFO L276 IsEmpty]: Start isEmpty. Operand 5399 states and 8174 transitions. [2020-10-12 19:20:18,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-12 19:20:18,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:18,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:20:18,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:20:18,811 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:18,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:18,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1514204177, now seen corresponding path program 1 times [2020-10-12 19:20:18,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:18,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998476595] [2020-10-12 19:20:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:18,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:18,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:19,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:19,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:19,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:19,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:19,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:19,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:19,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:19,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:20,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:20,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:20,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:23,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:23,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-12 19:20:23,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:20:23,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 19:20:23,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:20:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-12 19:20:23,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:24,429 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:20:24,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:24,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:24,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:24,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:24,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:24,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:20:24,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:24,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:24,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:24,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:24,584 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 19:20:24,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998476595] [2020-10-12 19:20:24,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:24,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:24,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077872837] [2020-10-12 19:20:24,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:24,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:24,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:24,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:24,587 INFO L87 Difference]: Start difference. First operand 5399 states and 8174 transitions. Second operand 5 states. [2020-10-12 19:20:31,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:31,220 INFO L93 Difference]: Finished difference Result 15718 states and 23719 transitions. [2020-10-12 19:20:31,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:31,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-12 19:20:31,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:31,266 INFO L225 Difference]: With dead ends: 15718 [2020-10-12 19:20:31,266 INFO L226 Difference]: Without dead ends: 10505 [2020-10-12 19:20:31,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:20:31,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10505 states. [2020-10-12 19:20:31,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10505 to 10503. [2020-10-12 19:20:31,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10503 states. [2020-10-12 19:20:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10503 states to 10503 states and 15764 transitions. [2020-10-12 19:20:31,722 INFO L78 Accepts]: Start accepts. Automaton has 10503 states and 15764 transitions. Word has length 320 [2020-10-12 19:20:31,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:31,725 INFO L479 AbstractCegarLoop]: Abstraction has 10503 states and 15764 transitions. [2020-10-12 19:20:31,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand 10503 states and 15764 transitions. [2020-10-12 19:20:31,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-12 19:20:31,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:31,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:20:31,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:20:31,752 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:31,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:31,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1722849716, now seen corresponding path program 1 times [2020-10-12 19:20:31,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:31,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11780765] [2020-10-12 19:20:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:31,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:32,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:32,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:34,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:34,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:35,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:35,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:35,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:35,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:35,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:35,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:35,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:36,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:36,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-12 19:20:36,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:20:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:20:36,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:20:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 19:20:36,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:20:37,835 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:20:37,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:37,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:37,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:37,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:37,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:37,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:20:37,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:37,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:37,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:37,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:37,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:20:38,037 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 19:20:38,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11780765] [2020-10-12 19:20:38,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:38,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:38,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617108931] [2020-10-12 19:20:38,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:38,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:38,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:38,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:38,040 INFO L87 Difference]: Start difference. First operand 10503 states and 15764 transitions. Second operand 5 states. [2020-10-12 19:20:45,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:45,770 INFO L93 Difference]: Finished difference Result 30931 states and 46338 transitions. [2020-10-12 19:20:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:45,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-12 19:20:45,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:45,828 INFO L225 Difference]: With dead ends: 30931 [2020-10-12 19:20:45,829 INFO L226 Difference]: Without dead ends: 20508 [2020-10-12 19:20:45,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:20:45,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20508 states. [2020-10-12 19:20:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20508 to 20506. [2020-10-12 19:20:46,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20506 states. [2020-10-12 19:20:46,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20506 states to 20506 states and 30499 transitions. [2020-10-12 19:20:46,683 INFO L78 Accepts]: Start accepts. Automaton has 20506 states and 30499 transitions. Word has length 322 [2020-10-12 19:20:46,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:46,684 INFO L479 AbstractCegarLoop]: Abstraction has 20506 states and 30499 transitions. [2020-10-12 19:20:46,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:46,684 INFO L276 IsEmpty]: Start isEmpty. Operand 20506 states and 30499 transitions. [2020-10-12 19:20:46,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-12 19:20:46,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:46,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:20:46,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:20:46,727 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:46,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:46,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1099395362, now seen corresponding path program 1 times [2020-10-12 19:20:46,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:46,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642601930] [2020-10-12 19:20:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:46,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:46,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:47,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:47,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:47,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:49,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:49,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:49,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:50,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:50,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:50,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:50,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:51,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:51,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:51,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:51,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:51,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:51,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-12 19:20:51,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-12 19:20:51,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:20:51,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:51,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:51,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-12 19:20:51,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 19:20:51,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:52,536 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:20:52,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:52,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:52,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:52,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:52,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:52,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:20:52,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:52,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:52,679 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 19:20:52,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642601930] [2020-10-12 19:20:52,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:52,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:52,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981551353] [2020-10-12 19:20:52,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:52,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:52,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:52,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:52,684 INFO L87 Difference]: Start difference. First operand 20506 states and 30499 transitions. Second operand 5 states. [2020-10-12 19:20:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:58,931 INFO L93 Difference]: Finished difference Result 54194 states and 79814 transitions. [2020-10-12 19:20:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:58,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-12 19:20:58,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:59,013 INFO L225 Difference]: With dead ends: 54194 [2020-10-12 19:20:59,013 INFO L226 Difference]: Without dead ends: 36176 [2020-10-12 19:20:59,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:20:59,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36176 states. [2020-10-12 19:21:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36176 to 21610. [2020-10-12 19:21:00,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21610 states. [2020-10-12 19:21:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21610 states to 21610 states and 32327 transitions. [2020-10-12 19:21:00,234 INFO L78 Accepts]: Start accepts. Automaton has 21610 states and 32327 transitions. Word has length 324 [2020-10-12 19:21:00,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:00,235 INFO L479 AbstractCegarLoop]: Abstraction has 21610 states and 32327 transitions. [2020-10-12 19:21:00,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:21:00,235 INFO L276 IsEmpty]: Start isEmpty. Operand 21610 states and 32327 transitions. [2020-10-12 19:21:00,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-12 19:21:00,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:00,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:21:00,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:21:00,270 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:00,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:00,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2106912541, now seen corresponding path program 1 times [2020-10-12 19:21:00,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:00,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140509687] [2020-10-12 19:21:00,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:00,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:00,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:00,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:00,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:00,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:00,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:00,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:01,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:01,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:01,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:01,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:02,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:02,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:02,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:05,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:05,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-12 19:21:05,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:21:05,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:21:05,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:21:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 19:21:05,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:05,869 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:21:05,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:05,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:05,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:05,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:05,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:05,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:21:05,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:05,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:05,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:05,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:05,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:05,997 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 19:21:05,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140509687] [2020-10-12 19:21:05,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:05,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:05,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621995274] [2020-10-12 19:21:05,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:05,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:05,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:06,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:06,000 INFO L87 Difference]: Start difference. First operand 21610 states and 32327 transitions. Second operand 5 states. [2020-10-12 19:21:14,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:14,133 INFO L93 Difference]: Finished difference Result 63166 states and 94281 transitions. [2020-10-12 19:21:14,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:21:14,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-12 19:21:14,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:14,189 INFO L225 Difference]: With dead ends: 63166 [2020-10-12 19:21:14,189 INFO L226 Difference]: Without dead ends: 42144 [2020-10-12 19:21:14,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:21:14,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42144 states. [2020-10-12 19:21:15,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42144 to 42142. [2020-10-12 19:21:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42142 states. [2020-10-12 19:21:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42142 states to 42142 states and 62395 transitions. [2020-10-12 19:21:15,954 INFO L78 Accepts]: Start accepts. Automaton has 42142 states and 62395 transitions. Word has length 326 [2020-10-12 19:21:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:15,954 INFO L479 AbstractCegarLoop]: Abstraction has 42142 states and 62395 transitions. [2020-10-12 19:21:15,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:21:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 42142 states and 62395 transitions. [2020-10-12 19:21:15,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-12 19:21:15,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:15,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:21:15,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:21:15,998 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:15,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:15,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1204357315, now seen corresponding path program 1 times [2020-10-12 19:21:15,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:15,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641041040] [2020-10-12 19:21:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:16,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:16,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:16,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:16,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:16,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:16,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:16,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:16,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:16,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:20,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:20,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:21,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:21,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-12 19:21:21,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:21:21,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 19:21:21,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:21,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:21,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-12 19:21:21,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 19:21:21,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:21,717 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:21:21,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:21,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:21,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:21,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:21,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:21,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:21:21,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:21,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:21,805 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 19:21:21,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641041040] [2020-10-12 19:21:21,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:21,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:21,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693145374] [2020-10-12 19:21:21,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:21,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:21,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:21,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:21,808 INFO L87 Difference]: Start difference. First operand 42142 states and 62395 transitions. Second operand 5 states. [2020-10-12 19:21:27,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:27,259 INFO L93 Difference]: Finished difference Result 76704 states and 112156 transitions. [2020-10-12 19:21:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:21:27,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-12 19:21:27,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:27,320 INFO L225 Difference]: With dead ends: 76704 [2020-10-12 19:21:27,320 INFO L226 Difference]: Without dead ends: 42142 [2020-10-12 19:21:27,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:21:27,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42142 states. [2020-10-12 19:21:29,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42142 to 42142. [2020-10-12 19:21:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42142 states. [2020-10-12 19:21:29,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42142 states to 42142 states and 62267 transitions. [2020-10-12 19:21:29,248 INFO L78 Accepts]: Start accepts. Automaton has 42142 states and 62267 transitions. Word has length 328 [2020-10-12 19:21:29,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:29,248 INFO L479 AbstractCegarLoop]: Abstraction has 42142 states and 62267 transitions. [2020-10-12 19:21:29,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:21:29,248 INFO L276 IsEmpty]: Start isEmpty. Operand 42142 states and 62267 transitions. [2020-10-12 19:21:29,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-12 19:21:29,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:29,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:21:29,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:21:29,288 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:29,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:29,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2130428446, now seen corresponding path program 1 times [2020-10-12 19:21:29,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:29,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628305124] [2020-10-12 19:21:29,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:29,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:31,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:31,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:34,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:34,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-12 19:21:34,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:21:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5201 [2020-10-12 19:21:34,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:21:34,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-12 19:21:34,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:35,113 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:21:35,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:35,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:35,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:35,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:35,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:35,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:21:35,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:35,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:35,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:35,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:35,240 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 19:21:35,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628305124] [2020-10-12 19:21:35,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:35,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:35,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409541995] [2020-10-12 19:21:35,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:35,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:35,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:35,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:35,243 INFO L87 Difference]: Start difference. First operand 42142 states and 62267 transitions. Second operand 5 states. [2020-10-12 19:21:46,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:46,480 INFO L93 Difference]: Finished difference Result 122122 states and 179773 transitions. [2020-10-12 19:21:46,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:21:46,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2020-10-12 19:21:46,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:46,577 INFO L225 Difference]: With dead ends: 122122 [2020-10-12 19:21:46,577 INFO L226 Difference]: Without dead ends: 82842 [2020-10-12 19:21:46,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:21:47,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82842 states. [2020-10-12 19:21:52,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82842 to 82840. [2020-10-12 19:21:52,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82840 states. [2020-10-12 19:21:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82840 states to 82840 states and 121467 transitions. [2020-10-12 19:21:52,746 INFO L78 Accepts]: Start accepts. Automaton has 82840 states and 121467 transitions. Word has length 329 [2020-10-12 19:21:52,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:52,747 INFO L479 AbstractCegarLoop]: Abstraction has 82840 states and 121467 transitions. [2020-10-12 19:21:52,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:21:52,747 INFO L276 IsEmpty]: Start isEmpty. Operand 82840 states and 121467 transitions. [2020-10-12 19:21:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-12 19:21:52,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:52,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:21:52,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:21:52,814 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:52,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:52,814 INFO L82 PathProgramCache]: Analyzing trace with hash 266460958, now seen corresponding path program 1 times [2020-10-12 19:21:52,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:52,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523550780] [2020-10-12 19:21:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:52,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:52,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:52,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:53,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:53,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:53,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:53,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:53,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:53,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:53,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:53,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:56,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:57,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:57,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:57,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-12 19:21:57,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:21:57,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:21:57,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:21:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 19:21:57,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:58,663 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:21:58,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:58,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:58,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:58,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:58,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:21:58,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:58,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:58,772 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 19:21:58,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523550780] [2020-10-12 19:21:58,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:58,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:58,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668588448] [2020-10-12 19:21:58,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:58,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:58,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:58,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:58,774 INFO L87 Difference]: Start difference. First operand 82840 states and 121467 transitions. Second operand 5 states. [2020-10-12 19:22:15,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:22:15,341 INFO L93 Difference]: Finished difference Result 242286 states and 354481 transitions. [2020-10-12 19:22:15,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:22:15,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-10-12 19:22:15,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:22:15,500 INFO L225 Difference]: With dead ends: 242286 [2020-10-12 19:22:15,500 INFO L226 Difference]: Without dead ends: 161276 [2020-10-12 19:22:15,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:22:15,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161276 states. [2020-10-12 19:22:26,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161276 to 161274. [2020-10-12 19:22:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161274 states. [2020-10-12 19:22:26,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161274 states to 161274 states and 233983 transitions. [2020-10-12 19:22:26,239 INFO L78 Accepts]: Start accepts. Automaton has 161274 states and 233983 transitions. Word has length 331 [2020-10-12 19:22:26,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:22:26,239 INFO L479 AbstractCegarLoop]: Abstraction has 161274 states and 233983 transitions. [2020-10-12 19:22:26,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:22:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 161274 states and 233983 transitions. [2020-10-12 19:22:26,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-12 19:22:26,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:22:26,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:22:26,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:22:26,363 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:22:26,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:22:26,363 INFO L82 PathProgramCache]: Analyzing trace with hash -121620028, now seen corresponding path program 1 times [2020-10-12 19:22:26,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:22:26,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770728212] [2020-10-12 19:22:26,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:22:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:26,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:26,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:26,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:26,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:26,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:26,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:26,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:26,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:26,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:26,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:26,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:26,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:27,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:31,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:31,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-12 19:22:31,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:22:31,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:22:31,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:31,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:22:31,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:22:31,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 19:22:31,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:31,951 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:22:31,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:22:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:31,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:31,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:31,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:22:31,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:22:31,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:22:31,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:22:31,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:22:31,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:22:31,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:32,058 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 19:22:32,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770728212] [2020-10-12 19:22:32,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:22:32,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:22:32,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534652266] [2020-10-12 19:22:32,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:22:32,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:22:32,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:22:32,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:22:32,061 INFO L87 Difference]: Start difference. First operand 161274 states and 233983 transitions. Second operand 5 states. [2020-10-12 19:22:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:22:54,538 INFO L93 Difference]: Finished difference Result 454393 states and 657985 transitions. [2020-10-12 19:22:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:22:54,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-10-12 19:22:54,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:22:54,877 INFO L225 Difference]: With dead ends: 454393 [2020-10-12 19:22:54,877 INFO L226 Difference]: Without dead ends: 302263 [2020-10-12 19:22:54,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:22:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302263 states.