/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.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:17:17,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:17:17,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:17:17,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:17:17,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:17:17,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:17:17,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:17:17,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:17:17,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:17:17,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:17:17,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:17:17,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:17:17,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:17:17,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:17:17,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:17:17,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:17:17,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:17:17,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:17:17,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:17:17,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:17:17,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:17:17,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:17:17,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:17:17,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:17:17,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:17:17,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:17:17,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:17:17,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:17:17,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:17:17,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:17:17,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:17:17,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:17:17,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:17:17,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:17:17,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:17:17,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:17:17,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:17:17,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:17:17,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:17:17,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:17:17,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:17:17,208 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 19:17:17,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:17:17,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:17:17,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:17:17,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:17:17,242 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:17:17,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:17:17,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:17:17,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:17:17,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:17:17,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:17:17,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:17:17,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:17:17,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:17:17,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:17:17,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:17:17,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:17:17,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:17:17,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:17:17,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:17:17,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:17:17,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:17:17,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:17:17,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:17:17,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:17:17,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:17:17,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:17:17,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:17:17,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:17:17,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:17:17,247 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 19:17:17,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:17:17,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:17:17,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:17:17,555 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:17:17,555 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:17:17,556 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-12 19:17:17,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/931389fe2/862f6ca957a24be7a60c9c5157b15f1e/FLAG5f9152161 [2020-10-12 19:17:18,186 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:17:18,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-12 19:17:18,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/931389fe2/862f6ca957a24be7a60c9c5157b15f1e/FLAG5f9152161 [2020-10-12 19:17:18,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/931389fe2/862f6ca957a24be7a60c9c5157b15f1e [2020-10-12 19:17:18,641 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:17:18,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:17:18,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:17:18,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:17:18,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:17:18,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:17:18" (1/1) ... [2020-10-12 19:17:18,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b71a567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:18, skipping insertion in model container [2020-10-12 19:17:18,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:17:18" (1/1) ... [2020-10-12 19:17:18,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:17:18,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:17:19,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:17:19,582 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:17:19,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:17:19,884 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:17:19,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:19 WrapperNode [2020-10-12 19:17:19,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:17:19,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:17:19,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:17:19,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:17:19,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:19" (1/1) ... [2020-10-12 19:17:19,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:19" (1/1) ... [2020-10-12 19:17:19,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:19" (1/1) ... [2020-10-12 19:17:19,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:19" (1/1) ... [2020-10-12 19:17:19,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:19" (1/1) ... [2020-10-12 19:17:20,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:19" (1/1) ... [2020-10-12 19:17:20,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:19" (1/1) ... [2020-10-12 19:17:20,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:17:20,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:17:20,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:17:20,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:17:20,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:19" (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 19:17:20,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:17:20,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:17:20,136 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:17:20,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:17:20,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:17:20,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:17:20,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:17:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:17:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:17:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:17:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:17:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:17:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:17:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:17:20,140 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:17:20,140 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:17:20,141 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:17:20,141 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:17:20,141 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:17:20,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:17:20,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:17:22,160 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:17:22,161 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:17:22,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:17:22 BoogieIcfgContainer [2020-10-12 19:17:22,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:17:22,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:17:22,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:17:22,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:17:22,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:17:18" (1/3) ... [2020-10-12 19:17:22,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa141c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:17:22, skipping insertion in model container [2020-10-12 19:17:22,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:19" (2/3) ... [2020-10-12 19:17:22,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa141c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:17:22, skipping insertion in model container [2020-10-12 19:17:22,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:17:22" (3/3) ... [2020-10-12 19:17:22,178 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-12 19:17:22,189 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:17:22,197 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:17:22,212 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:17:22,240 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:17:22,241 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:17:22,241 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:17:22,241 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:17:22,241 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:17:22,241 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:17:22,242 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:17:22,242 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:17:22,271 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states. [2020-10-12 19:17:22,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-12 19:17:22,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:17:22,295 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] [2020-10-12 19:17:22,295 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:17:22,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:17:22,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1878018170, now seen corresponding path program 1 times [2020-10-12 19:17:22,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:17:22,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972978450] [2020-10-12 19:17:22,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:17:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:23,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:24,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:25,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:25,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:25,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:25,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:25,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:26,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:26,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:28,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:28,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 19:17:28,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:17:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-12 19:17:28,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:28,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:17:28,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:17:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 19:17:28,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:17:29,008 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:17:29,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:17:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:29,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:29,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:29,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:17:29,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:17:29,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:17:29,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:17:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:17:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:17:29,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:29,173 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 19:17:29,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972978450] [2020-10-12 19:17:29,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:17:29,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:17:29,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830510086] [2020-10-12 19:17:29,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:17:29,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:17:29,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:17:29,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:17:29,199 INFO L87 Difference]: Start difference. First operand 586 states. Second operand 5 states. [2020-10-12 19:17:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:17:35,068 INFO L93 Difference]: Finished difference Result 1681 states and 2996 transitions. [2020-10-12 19:17:35,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:17:35,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2020-10-12 19:17:35,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:17:35,100 INFO L225 Difference]: With dead ends: 1681 [2020-10-12 19:17:35,100 INFO L226 Difference]: Without dead ends: 1132 [2020-10-12 19:17:35,115 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 19:17:35,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2020-10-12 19:17:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1130. [2020-10-12 19:17:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1130 states. [2020-10-12 19:17:35,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1761 transitions. [2020-10-12 19:17:35,264 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1761 transitions. Word has length 238 [2020-10-12 19:17:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:17:35,265 INFO L479 AbstractCegarLoop]: Abstraction has 1130 states and 1761 transitions. [2020-10-12 19:17:35,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:17:35,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1761 transitions. [2020-10-12 19:17:35,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-12 19:17:35,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:17:35,273 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] [2020-10-12 19:17:35,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:17:35,273 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:17:35,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:17:35,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1672130162, now seen corresponding path program 1 times [2020-10-12 19:17:35,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:17:35,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838121998] [2020-10-12 19:17:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:17:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:35,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:35,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:35,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:36,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:36,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:36,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:36,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:36,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:36,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:37,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:38,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:39,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:40,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:40,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-12 19:17:40,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:17:40,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:17:40,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:17:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:17:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 19:17:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:17:41,007 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:17:41,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:17:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:41,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:41,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:41,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:17:41,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:17:41,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:17:41,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:17:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:17:41,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:17:41,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:17:41,175 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 19:17:41,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838121998] [2020-10-12 19:17:41,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:17:41,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:17:41,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246509639] [2020-10-12 19:17:41,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:17:41,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:17:41,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:17:41,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:17:41,182 INFO L87 Difference]: Start difference. First operand 1130 states and 1761 transitions. Second operand 5 states. [2020-10-12 19:17:46,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:17:46,980 INFO L93 Difference]: Finished difference Result 3228 states and 5002 transitions. [2020-10-12 19:17:46,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:17:46,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2020-10-12 19:17:46,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:17:46,993 INFO L225 Difference]: With dead ends: 3228 [2020-10-12 19:17:46,993 INFO L226 Difference]: Without dead ends: 2173 [2020-10-12 19:17:46,997 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 19:17:47,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2173 states. [2020-10-12 19:17:47,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2173 to 2171. [2020-10-12 19:17:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2171 states. [2020-10-12 19:17:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 3349 transitions. [2020-10-12 19:17:47,128 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 3349 transitions. Word has length 240 [2020-10-12 19:17:47,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:17:47,130 INFO L479 AbstractCegarLoop]: Abstraction has 2171 states and 3349 transitions. [2020-10-12 19:17:47,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:17:47,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 3349 transitions. [2020-10-12 19:17:47,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-12 19:17:47,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:17:47,138 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] [2020-10-12 19:17:47,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:17:47,139 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:17:47,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:17:47,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1917339985, now seen corresponding path program 1 times [2020-10-12 19:17:47,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:17:47,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260417796] [2020-10-12 19:17:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:17:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:47,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:47,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:47,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:47,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:47,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:47,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:48,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:48,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:48,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:48,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:49,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:49,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:52,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:52,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 19:17:52,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:17:52,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 19:17:52,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:17:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:17:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 19:17:52,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:52,913 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:17:52,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:17:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:52,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:52,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:52,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:17:52,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:17:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 19:17:52,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:17:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:17:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:17:52,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:17:53,183 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 19:17:53,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260417796] [2020-10-12 19:17:53,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:17:53,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:17:53,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375108685] [2020-10-12 19:17:53,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:17:53,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:17:53,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:17:53,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:17:53,189 INFO L87 Difference]: Start difference. First operand 2171 states and 3349 transitions. Second operand 5 states. [2020-10-12 19:17:59,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:17:59,261 INFO L93 Difference]: Finished difference Result 6345 states and 9763 transitions. [2020-10-12 19:17:59,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:17:59,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-10-12 19:17:59,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:17:59,283 INFO L225 Difference]: With dead ends: 6345 [2020-10-12 19:17:59,283 INFO L226 Difference]: Without dead ends: 4261 [2020-10-12 19:17:59,288 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 19:17:59,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4261 states. [2020-10-12 19:17:59,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4261 to 4259. [2020-10-12 19:17:59,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4259 states. [2020-10-12 19:17:59,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4259 states to 4259 states and 6529 transitions. [2020-10-12 19:17:59,555 INFO L78 Accepts]: Start accepts. Automaton has 4259 states and 6529 transitions. Word has length 242 [2020-10-12 19:17:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:17:59,557 INFO L479 AbstractCegarLoop]: Abstraction has 4259 states and 6529 transitions. [2020-10-12 19:17:59,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:17:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4259 states and 6529 transitions. [2020-10-12 19:17:59,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-12 19:17:59,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:17:59,567 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] [2020-10-12 19:17:59,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:17:59,568 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:17:59,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:17:59,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1541731474, now seen corresponding path program 1 times [2020-10-12 19:17:59,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:17:59,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915651158] [2020-10-12 19:17:59,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:17:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:59,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:59,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:59,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:59,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:00,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:00,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:00,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:00,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:00,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:00,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:01,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:01,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:04,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:04,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-12 19:18:04,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:18:04,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:18:04,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:18:04,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 19:18:04,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:05,228 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:18:05,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:05,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:05,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:05,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:05,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:05,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:18:05,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:05,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:05,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915651158] [2020-10-12 19:18:05,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:05,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:05,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575237002] [2020-10-12 19:18:05,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:05,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:05,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:05,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:05,395 INFO L87 Difference]: Start difference. First operand 4259 states and 6529 transitions. Second operand 5 states. [2020-10-12 19:18:11,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:11,262 INFO L93 Difference]: Finished difference Result 12446 states and 19031 transitions. [2020-10-12 19:18:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:18:11,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-12 19:18:11,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:11,299 INFO L225 Difference]: With dead ends: 12446 [2020-10-12 19:18:11,299 INFO L226 Difference]: Without dead ends: 8295 [2020-10-12 19:18:11,307 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 19:18:11,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8295 states. [2020-10-12 19:18:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8295 to 8293. [2020-10-12 19:18:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8293 states. [2020-10-12 19:18:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8293 states to 8293 states and 12612 transitions. [2020-10-12 19:18:11,841 INFO L78 Accepts]: Start accepts. Automaton has 8293 states and 12612 transitions. Word has length 244 [2020-10-12 19:18:11,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:11,842 INFO L479 AbstractCegarLoop]: Abstraction has 8293 states and 12612 transitions. [2020-10-12 19:18:11,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:18:11,842 INFO L276 IsEmpty]: Start isEmpty. Operand 8293 states and 12612 transitions. [2020-10-12 19:18:11,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-12 19:18:11,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:11,863 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] [2020-10-12 19:18:11,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:18:11,864 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:11,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:11,865 INFO L82 PathProgramCache]: Analyzing trace with hash 2080517176, now seen corresponding path program 1 times [2020-10-12 19:18:11,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:11,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461144035] [2020-10-12 19:18:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:11,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:12,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:12,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:12,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:12,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:12,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:12,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:12,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:16,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:16,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-12 19:18:16,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:18:16,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 19:18:16,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 19:18:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 19:18:16,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:17,405 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:18:17,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:17,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:17,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:17,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:17,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:17,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:18:17,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:17,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:17,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:17,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:17,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:17,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461144035] [2020-10-12 19:18:17,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:17,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:17,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688810088] [2020-10-12 19:18:17,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:17,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:17,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:17,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:17,528 INFO L87 Difference]: Start difference. First operand 8293 states and 12612 transitions. Second operand 5 states. [2020-10-12 19:18:23,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:23,820 INFO L93 Difference]: Finished difference Result 23093 states and 34748 transitions. [2020-10-12 19:18:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:18:23,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-12 19:18:23,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:23,874 INFO L225 Difference]: With dead ends: 23093 [2020-10-12 19:18:23,874 INFO L226 Difference]: Without dead ends: 16147 [2020-10-12 19:18:23,889 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 19:18:23,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16147 states. [2020-10-12 19:18:24,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16147 to 9433. [2020-10-12 19:18:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9433 states. [2020-10-12 19:18:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9433 states to 9433 states and 14586 transitions. [2020-10-12 19:18:24,579 INFO L78 Accepts]: Start accepts. Automaton has 9433 states and 14586 transitions. Word has length 246 [2020-10-12 19:18:24,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:24,580 INFO L479 AbstractCegarLoop]: Abstraction has 9433 states and 14586 transitions. [2020-10-12 19:18:24,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:18:24,580 INFO L276 IsEmpty]: Start isEmpty. Operand 9433 states and 14586 transitions. [2020-10-12 19:18:24,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-12 19:18:24,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:24,602 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] [2020-10-12 19:18:24,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:18:24,603 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:24,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:24,603 INFO L82 PathProgramCache]: Analyzing trace with hash -54518278, now seen corresponding path program 1 times [2020-10-12 19:18:24,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:24,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418025566] [2020-10-12 19:18:24,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:24,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:24,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:24,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:24,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:24,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:25,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:25,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:25,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:25,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:25,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:25,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:26,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:29,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:29,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-12 19:18:29,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:18:29,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:18:29,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:29,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:29,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:18:29,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 19:18:29,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:30,328 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:18:30,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:30,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:30,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:30,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:30,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:18:30,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:30,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:30,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418025566] [2020-10-12 19:18:30,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:30,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:30,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188760864] [2020-10-12 19:18:30,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:30,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:30,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:30,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:30,583 INFO L87 Difference]: Start difference. First operand 9433 states and 14586 transitions. Second operand 5 states. [2020-10-12 19:18:36,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:36,306 INFO L93 Difference]: Finished difference Result 27757 states and 42850 transitions. [2020-10-12 19:18:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:18:36,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-10-12 19:18:36,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:36,345 INFO L225 Difference]: With dead ends: 27757 [2020-10-12 19:18:36,345 INFO L226 Difference]: Without dead ends: 18435 [2020-10-12 19:18:36,363 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 19:18:36,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18435 states. [2020-10-12 19:18:37,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18435 to 18433. [2020-10-12 19:18:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18433 states. [2020-10-12 19:18:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18433 states to 18433 states and 28250 transitions. [2020-10-12 19:18:37,525 INFO L78 Accepts]: Start accepts. Automaton has 18433 states and 28250 transitions. Word has length 247 [2020-10-12 19:18:37,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:37,525 INFO L479 AbstractCegarLoop]: Abstraction has 18433 states and 28250 transitions. [2020-10-12 19:18:37,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:18:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 18433 states and 28250 transitions. [2020-10-12 19:18:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-12 19:18:37,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:37,558 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] [2020-10-12 19:18:37,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:18:37,558 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:37,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:37,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1868740365, now seen corresponding path program 1 times [2020-10-12 19:18:37,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:37,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382077129] [2020-10-12 19:18:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:37,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:37,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:38,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:39,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:39,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:42,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:42,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-12 19:18:42,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:18:42,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 19:18:42,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:42,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:42,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:18:42,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 19:18:42,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:43,154 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:18:43,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:43,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:43,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:43,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:43,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:43,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:18:43,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:43,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:43,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:43,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382077129] [2020-10-12 19:18:43,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:43,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:43,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39090895] [2020-10-12 19:18:43,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:43,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:43,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:43,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:43,257 INFO L87 Difference]: Start difference. First operand 18433 states and 28250 transitions. Second operand 5 states. [2020-10-12 19:18:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:50,650 INFO L93 Difference]: Finished difference Result 53658 states and 82028 transitions. [2020-10-12 19:18:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:18:50,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-10-12 19:18:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:50,714 INFO L225 Difference]: With dead ends: 53658 [2020-10-12 19:18:50,715 INFO L226 Difference]: Without dead ends: 36264 [2020-10-12 19:18:50,746 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 19:18:50,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36264 states. [2020-10-12 19:18:52,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36264 to 36262. [2020-10-12 19:18:52,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36262 states. [2020-10-12 19:18:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36262 states to 36262 states and 55170 transitions. [2020-10-12 19:18:53,024 INFO L78 Accepts]: Start accepts. Automaton has 36262 states and 55170 transitions. Word has length 249 [2020-10-12 19:18:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:53,024 INFO L479 AbstractCegarLoop]: Abstraction has 36262 states and 55170 transitions. [2020-10-12 19:18:53,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:18:53,025 INFO L276 IsEmpty]: Start isEmpty. Operand 36262 states and 55170 transitions. [2020-10-12 19:18:53,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-12 19:18:53,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:53,076 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] [2020-10-12 19:18:53,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:18:53,077 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:53,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:53,077 INFO L82 PathProgramCache]: Analyzing trace with hash 495612960, now seen corresponding path program 1 times [2020-10-12 19:18:53,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:53,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382749732] [2020-10-12 19:18:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:53,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:58,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:58,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-12 19:18:58,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:18:58,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:18:58,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:18:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 19:18:58,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:58,551 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:18:58,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:58,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:58,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:58,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:58,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:58,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:18:58,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:58,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:58,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382749732] [2020-10-12 19:18:58,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:58,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:58,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078728589] [2020-10-12 19:18:58,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:58,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:58,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:58,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:58,621 INFO L87 Difference]: Start difference. First operand 36262 states and 55170 transitions. Second operand 5 states. [2020-10-12 19:19:07,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:07,187 INFO L93 Difference]: Finished difference Result 96998 states and 146590 transitions. [2020-10-12 19:19:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:19:07,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-12 19:19:07,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:07,288 INFO L225 Difference]: With dead ends: 96998 [2020-10-12 19:19:07,288 INFO L226 Difference]: Without dead ends: 65156 [2020-10-12 19:19:07,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:19:07,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65156 states. [2020-10-12 19:19:10,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65156 to 40234. [2020-10-12 19:19:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40234 states. [2020-10-12 19:19:10,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40234 states to 40234 states and 61502 transitions. [2020-10-12 19:19:10,222 INFO L78 Accepts]: Start accepts. Automaton has 40234 states and 61502 transitions. Word has length 251 [2020-10-12 19:19:10,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:10,222 INFO L479 AbstractCegarLoop]: Abstraction has 40234 states and 61502 transitions. [2020-10-12 19:19:10,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:10,222 INFO L276 IsEmpty]: Start isEmpty. Operand 40234 states and 61502 transitions. [2020-10-12 19:19:10,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-12 19:19:10,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:10,254 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] [2020-10-12 19:19:10,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:19:10,255 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:10,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:10,255 INFO L82 PathProgramCache]: Analyzing trace with hash 2079960106, now seen corresponding path program 1 times [2020-10-12 19:19:10,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:10,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072624546] [2020-10-12 19:19:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:10,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:11,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:13,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:13,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:15,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:15,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-12 19:19:15,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:19:15,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:19:15,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 19:19:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 19:19:15,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:15,749 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:19:15,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:15,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:15,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:15,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:15,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:15,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:19:15,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:15,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:15,977 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 19:19:15,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072624546] [2020-10-12 19:19:15,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:15,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:15,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305640785] [2020-10-12 19:19:15,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:15,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:15,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:15,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:15,979 INFO L87 Difference]: Start difference. First operand 40234 states and 61502 transitions. Second operand 5 states. [2020-10-12 19:19:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:27,098 INFO L93 Difference]: Finished difference Result 109210 states and 165368 transitions. [2020-10-12 19:19:27,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:19:27,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-10-12 19:19:27,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:27,210 INFO L225 Difference]: With dead ends: 109210 [2020-10-12 19:19:27,211 INFO L226 Difference]: Without dead ends: 79416 [2020-10-12 19:19:27,254 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 19:19:27,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79416 states. [2020-10-12 19:19:30,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79416 to 51350. [2020-10-12 19:19:30,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51350 states. [2020-10-12 19:19:30,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51350 states to 51350 states and 79862 transitions. [2020-10-12 19:19:30,982 INFO L78 Accepts]: Start accepts. Automaton has 51350 states and 79862 transitions. Word has length 253 [2020-10-12 19:19:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:30,982 INFO L479 AbstractCegarLoop]: Abstraction has 51350 states and 79862 transitions. [2020-10-12 19:19:30,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:30,982 INFO L276 IsEmpty]: Start isEmpty. Operand 51350 states and 79862 transitions. [2020-10-12 19:19:31,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-12 19:19:31,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:31,037 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] [2020-10-12 19:19:31,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:19:31,037 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:31,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:31,038 INFO L82 PathProgramCache]: Analyzing trace with hash 680245836, now seen corresponding path program 1 times [2020-10-12 19:19:31,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:31,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36681039] [2020-10-12 19:19:31,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:31,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:31,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:31,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:31,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:31,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:31,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:31,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:31,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:31,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:31,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:31,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:31,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:36,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:36,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 19:19:36,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:19:36,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:19:36,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:19:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 19:19:36,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:36,534 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:19:36,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:36,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:36,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:36,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:36,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:19:36,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:36,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:36,621 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 19:19:36,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36681039] [2020-10-12 19:19:36,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:36,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:36,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488466463] [2020-10-12 19:19:36,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:36,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:36,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:36,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:36,623 INFO L87 Difference]: Start difference. First operand 51350 states and 79862 transitions. Second operand 5 states. [2020-10-12 19:19:48,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:48,121 INFO L93 Difference]: Finished difference Result 140076 states and 216124 transitions. [2020-10-12 19:19:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:19:48,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-12 19:19:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:48,266 INFO L225 Difference]: With dead ends: 140076 [2020-10-12 19:19:48,266 INFO L226 Difference]: Without dead ends: 94250 [2020-10-12 19:19:48,331 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 19:19:48,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94250 states. [2020-10-12 19:19:56,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94250 to 94248. [2020-10-12 19:19:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94248 states. [2020-10-12 19:19:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94248 states to 94248 states and 143144 transitions. [2020-10-12 19:19:56,283 INFO L78 Accepts]: Start accepts. Automaton has 94248 states and 143144 transitions. Word has length 254 [2020-10-12 19:19:56,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:56,284 INFO L479 AbstractCegarLoop]: Abstraction has 94248 states and 143144 transitions. [2020-10-12 19:19:56,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 94248 states and 143144 transitions. [2020-10-12 19:19:56,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-12 19:19:56,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:56,362 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] [2020-10-12 19:19:56,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:19:56,362 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:56,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:56,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1660718923, now seen corresponding path program 1 times [2020-10-12 19:19:56,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:56,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312614664] [2020-10-12 19:19:56,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:56,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:57,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:58,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:58,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:02,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:02,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-12 19:20:02,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:20:02,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5744 [2020-10-12 19:20:02,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:02,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:02,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:20:02,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 19:20:02,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:02,593 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:20:02,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:02,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:02,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:02,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:02,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:02,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:20:02,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:02,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:02,709 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 19:20:02,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312614664] [2020-10-12 19:20:02,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:02,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:02,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414015386] [2020-10-12 19:20:02,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:02,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:02,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:02,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:02,712 INFO L87 Difference]: Start difference. First operand 94248 states and 143144 transitions. Second operand 5 states. [2020-10-12 19:20:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:19,717 INFO L93 Difference]: Finished difference Result 252461 states and 379817 transitions. [2020-10-12 19:20:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:19,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 257 [2020-10-12 19:20:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:19,907 INFO L225 Difference]: With dead ends: 252461 [2020-10-12 19:20:19,907 INFO L226 Difference]: Without dead ends: 168079 [2020-10-12 19:20:19,966 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 19:20:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168079 states. [2020-10-12 19:20:31,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168079 to 98462. [2020-10-12 19:20:31,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98462 states. [2020-10-12 19:20:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98462 states to 98462 states and 148227 transitions. [2020-10-12 19:20:31,507 INFO L78 Accepts]: Start accepts. Automaton has 98462 states and 148227 transitions. Word has length 257 [2020-10-12 19:20:31,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:31,507 INFO L479 AbstractCegarLoop]: Abstraction has 98462 states and 148227 transitions. [2020-10-12 19:20:31,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:31,507 INFO L276 IsEmpty]: Start isEmpty. Operand 98462 states and 148227 transitions. [2020-10-12 19:20:31,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-12 19:20:31,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:31,583 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] [2020-10-12 19:20:31,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:20:31,584 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:31,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:31,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1732375422, now seen corresponding path program 1 times [2020-10-12 19:20:31,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:31,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798167162] [2020-10-12 19:20:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:31,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:32,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:34,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:34,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:34,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:36,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:36,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-12 19:20:36,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:20:36,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:20:36,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-12 19:20:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 19:20:36,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:37,205 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:20:37,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:37,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:37,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:37,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:37,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:37,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:20:37,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:37,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:37,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:37,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:37,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:37,274 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 19:20:37,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798167162] [2020-10-12 19:20:37,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:37,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:37,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103324007] [2020-10-12 19:20:37,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:37,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:37,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:37,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:37,276 INFO L87 Difference]: Start difference. First operand 98462 states and 148227 transitions. Second operand 5 states. [2020-10-12 19:20:48,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:48,475 INFO L93 Difference]: Finished difference Result 149192 states and 222340 transitions. [2020-10-12 19:20:48,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:48,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-12 19:20:48,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:48,574 INFO L225 Difference]: With dead ends: 149192 [2020-10-12 19:20:48,574 INFO L226 Difference]: Without dead ends: 91638 [2020-10-12 19:20:48,615 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 19:20:48,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91638 states. [2020-10-12 19:20:56,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91638 to 91190. [2020-10-12 19:20:56,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91190 states. [2020-10-12 19:20:56,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91190 states to 91190 states and 137027 transitions. [2020-10-12 19:20:56,216 INFO L78 Accepts]: Start accepts. Automaton has 91190 states and 137027 transitions. Word has length 258 [2020-10-12 19:20:56,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:56,217 INFO L479 AbstractCegarLoop]: Abstraction has 91190 states and 137027 transitions. [2020-10-12 19:20:56,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:56,217 INFO L276 IsEmpty]: Start isEmpty. Operand 91190 states and 137027 transitions. [2020-10-12 19:20:56,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-12 19:20:56,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:56,290 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] [2020-10-12 19:20:56,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:20:56,290 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:56,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:56,291 INFO L82 PathProgramCache]: Analyzing trace with hash -2098176200, now seen corresponding path program 1 times [2020-10-12 19:20:56,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:56,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28497708] [2020-10-12 19:20:56,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking...