/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_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:12:53,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:12:53,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:12:54,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:12:54,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:12:54,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:12:54,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:12:54,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:12:54,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:12:54,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:12:54,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:12:54,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:12:54,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:12:54,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:12:54,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:12:54,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:12:54,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:12:54,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:12:54,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:12:54,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:12:54,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:12:54,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:12:54,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:12:54,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:12:54,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:12:54,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:12:54,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:12:54,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:12:54,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:12:54,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:12:54,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:12:54,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:12:54,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:12:54,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:12:54,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:12:54,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:12:54,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:12:54,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:12:54,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:12:54,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:12:54,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:12:54,092 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 20:12:54,131 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:12:54,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:12:54,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:12:54,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:12:54,133 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:12:54,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:12:54,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:12:54,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:12:54,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:12:54,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:12:54,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:12:54,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:12:54,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:12:54,135 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:12:54,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:12:54,135 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:12:54,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:12:54,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:12:54,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:12:54,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:12:54,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:12:54,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:12:54,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:12:54,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:12:54,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:12:54,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:12:54,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:12:54,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:12:54,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:12:54,138 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 20:12:54,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:12:54,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:12:54,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:12:54,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:12:54,441 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:12:54,442 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-12 20:12:54,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80beb5f34/85669f3ada4a49bcba5bbb72bc374eb9/FLAGa1805b8fd [2020-10-12 20:12:55,034 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:12:55,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-12 20:12:55,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80beb5f34/85669f3ada4a49bcba5bbb72bc374eb9/FLAGa1805b8fd [2020-10-12 20:12:55,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80beb5f34/85669f3ada4a49bcba5bbb72bc374eb9 [2020-10-12 20:12:55,359 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:12:55,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:12:55,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:12:55,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:12:55,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:12:55,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:12:55" (1/1) ... [2020-10-12 20:12:55,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f90b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:55, skipping insertion in model container [2020-10-12 20:12:55,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:12:55" (1/1) ... [2020-10-12 20:12:55,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:12:55,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:12:55,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:12:55,866 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:12:56,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:12:56,135 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:12:56,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:56 WrapperNode [2020-10-12 20:12:56,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:12:56,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:12:56,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:12:56,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:12:56,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:56" (1/1) ... [2020-10-12 20:12:56,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:56" (1/1) ... [2020-10-12 20:12:56,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:56" (1/1) ... [2020-10-12 20:12:56,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:56" (1/1) ... [2020-10-12 20:12:56,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:56" (1/1) ... [2020-10-12 20:12:56,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:56" (1/1) ... [2020-10-12 20:12:56,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:56" (1/1) ... [2020-10-12 20:12:56,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:12:56,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:12:56,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:12:56,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:12:56,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:56" (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 20:12:56,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:12:56,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:12:56,325 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:12:56,325 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:12:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:12:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:12:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:12:56,327 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:12:56,327 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:12:56,327 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:12:56,327 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:12:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:12:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:12:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:12:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:12:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:12:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:12:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 20:12:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:12:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:12:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:12:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:12:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:12:57,492 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:12:57,492 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:12:57,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:12:57 BoogieIcfgContainer [2020-10-12 20:12:57,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:12:57,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:12:57,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:12:57,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:12:57,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:12:55" (1/3) ... [2020-10-12 20:12:57,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f90ede5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:12:57, skipping insertion in model container [2020-10-12 20:12:57,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:56" (2/3) ... [2020-10-12 20:12:57,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f90ede5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:12:57, skipping insertion in model container [2020-10-12 20:12:57,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:12:57" (3/3) ... [2020-10-12 20:12:57,508 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-12 20:12:57,519 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:12:57,527 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:12:57,542 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:12:57,569 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:12:57,569 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:12:57,570 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:12:57,570 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:12:57,570 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:12:57,570 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:12:57,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:12:57,571 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:12:57,595 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states. [2020-10-12 20:12:57,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 20:12:57,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:57,609 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] [2020-10-12 20:12:57,609 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:57,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:57,616 INFO L82 PathProgramCache]: Analyzing trace with hash -191598454, now seen corresponding path program 1 times [2020-10-12 20:12:57,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:57,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67824315] [2020-10-12 20:12:57,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:58,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:59,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:03,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:03,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:13:03,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:13:03,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:13:03,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:13:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:13:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 20:13:03,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:13:03,669 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:13:03,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:03,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:03,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:03,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:03,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:03,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 20:13:03,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:13:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:13:03,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:03,804 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 20:13:03,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67824315] [2020-10-12 20:13:03,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:03,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:13:03,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048342690] [2020-10-12 20:13:03,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:13:03,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:03,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:13:03,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:13:03,834 INFO L87 Difference]: Start difference. First operand 264 states. Second operand 9 states. [2020-10-12 20:13:04,206 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 20:13:06,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:06,180 INFO L93 Difference]: Finished difference Result 1176 states and 1900 transitions. [2020-10-12 20:13:06,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:13:06,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-12 20:13:06,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:06,207 INFO L225 Difference]: With dead ends: 1176 [2020-10-12 20:13:06,207 INFO L226 Difference]: Without dead ends: 1027 [2020-10-12 20:13:06,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:13:06,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-10-12 20:13:06,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 400. [2020-10-12 20:13:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-12 20:13:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 597 transitions. [2020-10-12 20:13:06,322 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 597 transitions. Word has length 101 [2020-10-12 20:13:06,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:06,324 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 597 transitions. [2020-10-12 20:13:06,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:13:06,324 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 597 transitions. [2020-10-12 20:13:06,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:13:06,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:06,335 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] [2020-10-12 20:13:06,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:13:06,336 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:06,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1985426171, now seen corresponding path program 1 times [2020-10-12 20:13:06,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:06,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820480937] [2020-10-12 20:13:06,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:06,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:07,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:07,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:13:07,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:13:07,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1553 [2020-10-12 20:13:07,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:13:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 20:13:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 20:13:07,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:08,379 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:13:08,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:08,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:08,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:08,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:08,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:08,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:13:08,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:08,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:13:08,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:08,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:13:08,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:13:08,560 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 20:13:08,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820480937] [2020-10-12 20:13:08,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:08,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:13:08,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407922858] [2020-10-12 20:13:08,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:13:08,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:08,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:13:08,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:13:08,565 INFO L87 Difference]: Start difference. First operand 400 states and 597 transitions. Second operand 9 states. [2020-10-12 20:13:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:12,969 INFO L93 Difference]: Finished difference Result 1977 states and 3061 transitions. [2020-10-12 20:13:12,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:13:12,976 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-12 20:13:12,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:12,998 INFO L225 Difference]: With dead ends: 1977 [2020-10-12 20:13:12,999 INFO L226 Difference]: Without dead ends: 1681 [2020-10-12 20:13:13,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:13:13,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2020-10-12 20:13:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1671. [2020-10-12 20:13:13,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1671 states. [2020-10-12 20:13:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2580 transitions. [2020-10-12 20:13:13,157 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2580 transitions. Word has length 102 [2020-10-12 20:13:13,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:13,158 INFO L479 AbstractCegarLoop]: Abstraction has 1671 states and 2580 transitions. [2020-10-12 20:13:13,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:13:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2580 transitions. [2020-10-12 20:13:13,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:13:13,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:13,163 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] [2020-10-12 20:13:13,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:13:13,163 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:13,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:13,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1165953371, now seen corresponding path program 1 times [2020-10-12 20:13:13,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:13,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535797697] [2020-10-12 20:13:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:13,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:13,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:13,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:13:13,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:13:13,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-10-12 20:13:13,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:13:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:13:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 20:13:13,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:14,274 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:13:14,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:14,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:14,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:14,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:14,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:14,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 20:13:14,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:14,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:14,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:14,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:13:14,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:14,339 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 20:13:14,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535797697] [2020-10-12 20:13:14,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:14,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:13:14,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016104129] [2020-10-12 20:13:14,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:13:14,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:14,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:13:14,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:13:14,342 INFO L87 Difference]: Start difference. First operand 1671 states and 2580 transitions. Second operand 6 states. [2020-10-12 20:13:14,614 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 20:13:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:16,069 INFO L93 Difference]: Finished difference Result 4619 states and 7202 transitions. [2020-10-12 20:13:16,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:13:16,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-12 20:13:16,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:16,091 INFO L225 Difference]: With dead ends: 4619 [2020-10-12 20:13:16,092 INFO L226 Difference]: Without dead ends: 3004 [2020-10-12 20:13:16,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:13:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2020-10-12 20:13:16,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 3002. [2020-10-12 20:13:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3002 states. [2020-10-12 20:13:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 4657 transitions. [2020-10-12 20:13:16,324 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 4657 transitions. Word has length 103 [2020-10-12 20:13:16,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:16,324 INFO L479 AbstractCegarLoop]: Abstraction has 3002 states and 4657 transitions. [2020-10-12 20:13:16,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:13:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 4657 transitions. [2020-10-12 20:13:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:13:16,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:16,328 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] [2020-10-12 20:13:16,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:13:16,329 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:16,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:16,329 INFO L82 PathProgramCache]: Analyzing trace with hash -956390806, now seen corresponding path program 1 times [2020-10-12 20:13:16,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:16,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863002082] [2020-10-12 20:13:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:16,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:16,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:17,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:17,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:13:17,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:13:17,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-10-12 20:13:17,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:13:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:13:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 20:13:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:13:17,688 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:13:17,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:17,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:17,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:17,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:17,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:17,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 20:13:17,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:17,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:17,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:17,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:13:17,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:17,754 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 20:13:17,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863002082] [2020-10-12 20:13:17,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:17,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:13:17,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196421980] [2020-10-12 20:13:17,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:13:17,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:17,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:13:17,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:13:17,757 INFO L87 Difference]: Start difference. First operand 3002 states and 4657 transitions. Second operand 6 states. [2020-10-12 20:13:18,020 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 20:13:19,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:19,663 INFO L93 Difference]: Finished difference Result 8486 states and 13226 transitions. [2020-10-12 20:13:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:13:19,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-12 20:13:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:19,693 INFO L225 Difference]: With dead ends: 8486 [2020-10-12 20:13:19,694 INFO L226 Difference]: Without dead ends: 5556 [2020-10-12 20:13:19,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:13:19,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5556 states. [2020-10-12 20:13:20,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5556 to 5554. [2020-10-12 20:13:20,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5554 states. [2020-10-12 20:13:20,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 8606 transitions. [2020-10-12 20:13:20,082 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 8606 transitions. Word has length 103 [2020-10-12 20:13:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:20,085 INFO L479 AbstractCegarLoop]: Abstraction has 5554 states and 8606 transitions. [2020-10-12 20:13:20,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:13:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 8606 transitions. [2020-10-12 20:13:20,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:13:20,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:20,091 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] [2020-10-12 20:13:20,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:13:20,091 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:20,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:20,092 INFO L82 PathProgramCache]: Analyzing trace with hash 2106159240, now seen corresponding path program 1 times [2020-10-12 20:13:20,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:20,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774482499] [2020-10-12 20:13:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:20,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:20,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:20,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:20,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:13:20,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:13:20,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-10-12 20:13:20,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:13:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:13:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 20:13:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:13:21,237 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:13:21,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:21,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:21,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:21,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:21,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 20:13:21,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:13:21,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:13:21,318 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 20:13:21,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774482499] [2020-10-12 20:13:21,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:21,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:13:21,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583990731] [2020-10-12 20:13:21,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:13:21,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:21,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:13:21,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:13:21,322 INFO L87 Difference]: Start difference. First operand 5554 states and 8606 transitions. Second operand 6 states. [2020-10-12 20:13:21,570 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 20:13:23,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:23,365 INFO L93 Difference]: Finished difference Result 15654 states and 24290 transitions. [2020-10-12 20:13:23,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:13:23,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-12 20:13:23,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:23,417 INFO L225 Difference]: With dead ends: 15654 [2020-10-12 20:13:23,417 INFO L226 Difference]: Without dead ends: 10225 [2020-10-12 20:13:23,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:13:23,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10225 states. [2020-10-12 20:13:23,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10225 to 10223. [2020-10-12 20:13:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10223 states. [2020-10-12 20:13:23,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10223 states to 10223 states and 15768 transitions. [2020-10-12 20:13:23,995 INFO L78 Accepts]: Start accepts. Automaton has 10223 states and 15768 transitions. Word has length 103 [2020-10-12 20:13:23,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:23,996 INFO L479 AbstractCegarLoop]: Abstraction has 10223 states and 15768 transitions. [2020-10-12 20:13:23,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:13:23,996 INFO L276 IsEmpty]: Start isEmpty. Operand 10223 states and 15768 transitions. [2020-10-12 20:13:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:13:24,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:24,003 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] [2020-10-12 20:13:24,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:13:24,004 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:24,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:24,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1854219671, now seen corresponding path program 1 times [2020-10-12 20:13:24,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:24,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26997072] [2020-10-12 20:13:24,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:24,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:24,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:24,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:24,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:13:24,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:13:24,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-10-12 20:13:24,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:24,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:13:24,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:13:24,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 20:13:24,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:25,010 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:13:25,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:25,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:25,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:25,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:25,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:25,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 20:13:25,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:25,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:25,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:25,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:13:25,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:25,081 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 20:13:25,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26997072] [2020-10-12 20:13:25,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:25,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:13:25,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265826705] [2020-10-12 20:13:25,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:13:25,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:25,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:13:25,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:13:25,084 INFO L87 Difference]: Start difference. First operand 10223 states and 15768 transitions. Second operand 6 states. [2020-10-12 20:13:25,319 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:13:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:27,282 INFO L93 Difference]: Finished difference Result 29248 states and 45177 transitions. [2020-10-12 20:13:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:13:27,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-12 20:13:27,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:27,346 INFO L225 Difference]: With dead ends: 29248 [2020-10-12 20:13:27,346 INFO L226 Difference]: Without dead ends: 19187 [2020-10-12 20:13:27,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:13:27,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19187 states. [2020-10-12 20:13:28,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19187 to 19185. [2020-10-12 20:13:28,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19185 states. [2020-10-12 20:13:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19185 states to 19185 states and 29492 transitions. [2020-10-12 20:13:28,362 INFO L78 Accepts]: Start accepts. Automaton has 19185 states and 29492 transitions. Word has length 103 [2020-10-12 20:13:28,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:28,363 INFO L479 AbstractCegarLoop]: Abstraction has 19185 states and 29492 transitions. [2020-10-12 20:13:28,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:13:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 19185 states and 29492 transitions. [2020-10-12 20:13:28,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:13:28,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:28,373 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] [2020-10-12 20:13:28,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:13:28,373 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:28,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:28,374 INFO L82 PathProgramCache]: Analyzing trace with hash 347082406, now seen corresponding path program 1 times [2020-10-12 20:13:28,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:28,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830965065] [2020-10-12 20:13:28,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:28,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:29,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:29,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:13:29,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:13:29,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1325 [2020-10-12 20:13:29,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:13:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:13:29,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 20:13:29,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:13:30,123 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:13:30,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:30,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:30,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:30,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:30,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:30,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 20:13:30,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:30,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:13:30,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:30,203 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 20:13:30,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830965065] [2020-10-12 20:13:30,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:30,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:13:30,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376338606] [2020-10-12 20:13:30,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:13:30,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:30,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:13:30,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:13:30,206 INFO L87 Difference]: Start difference. First operand 19185 states and 29492 transitions. Second operand 6 states. [2020-10-12 20:13:30,448 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 20:13:33,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:33,751 INFO L93 Difference]: Finished difference Result 55753 states and 85772 transitions. [2020-10-12 20:13:33,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:13:33,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-12 20:13:33,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:33,834 INFO L225 Difference]: With dead ends: 55753 [2020-10-12 20:13:33,834 INFO L226 Difference]: Without dead ends: 36771 [2020-10-12 20:13:33,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:13:33,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36771 states. [2020-10-12 20:13:35,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36771 to 36769. [2020-10-12 20:13:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36769 states. [2020-10-12 20:13:35,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36769 states to 36769 states and 56334 transitions. [2020-10-12 20:13:35,668 INFO L78 Accepts]: Start accepts. Automaton has 36769 states and 56334 transitions. Word has length 103 [2020-10-12 20:13:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:35,669 INFO L479 AbstractCegarLoop]: Abstraction has 36769 states and 56334 transitions. [2020-10-12 20:13:35,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:13:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 36769 states and 56334 transitions. [2020-10-12 20:13:35,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:13:35,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:35,688 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] [2020-10-12 20:13:35,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:13:35,689 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:35,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:35,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1826926457, now seen corresponding path program 1 times [2020-10-12 20:13:35,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:35,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24255106] [2020-10-12 20:13:35,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:35,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:35,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:36,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:36,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:13:36,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:13:36,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-10-12 20:13:36,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:13:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:13:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 20:13:36,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:36,877 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:13:36,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:36,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:36,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:36,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:36,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:36,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:13:36,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:13:36,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:36,936 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 20:13:36,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24255106] [2020-10-12 20:13:36,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:36,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:13:36,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184022943] [2020-10-12 20:13:36,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:13:36,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:36,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:13:36,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:13:36,947 INFO L87 Difference]: Start difference. First operand 36769 states and 56334 transitions. Second operand 6 states. [2020-10-12 20:13:37,207 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 20:13:41,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:41,891 INFO L93 Difference]: Finished difference Result 108992 states and 166795 transitions. [2020-10-12 20:13:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:13:41,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-12 20:13:41,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:42,076 INFO L225 Difference]: With dead ends: 108992 [2020-10-12 20:13:42,076 INFO L226 Difference]: Without dead ends: 72318 [2020-10-12 20:13:42,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:13:42,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72318 states. [2020-10-12 20:13:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72318 to 72316. [2020-10-12 20:13:46,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72316 states. [2020-10-12 20:13:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72316 states to 72316 states and 109991 transitions. [2020-10-12 20:13:47,046 INFO L78 Accepts]: Start accepts. Automaton has 72316 states and 109991 transitions. Word has length 103 [2020-10-12 20:13:47,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:47,047 INFO L479 AbstractCegarLoop]: Abstraction has 72316 states and 109991 transitions. [2020-10-12 20:13:47,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:13:47,047 INFO L276 IsEmpty]: Start isEmpty. Operand 72316 states and 109991 transitions. [2020-10-12 20:13:47,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:13:47,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:47,341 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] [2020-10-12 20:13:47,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:13:47,341 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:47,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1541442246, now seen corresponding path program 1 times [2020-10-12 20:13:47,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:47,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424271179] [2020-10-12 20:13:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:47,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:50,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:50,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:13:50,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:13:50,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2947 [2020-10-12 20:13:50,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:50,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:13:50,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:13:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 20:13:50,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:50,755 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:13:50,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:50,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:50,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:50,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:50,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:50,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 20:13:50,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:13:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:50,830 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 20:13:50,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424271179] [2020-10-12 20:13:50,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:50,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:13:50,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260000791] [2020-10-12 20:13:50,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:13:50,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:50,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:13:50,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:13:50,832 INFO L87 Difference]: Start difference. First operand 72316 states and 109991 transitions. Second operand 11 states. [2020-10-12 20:13:51,111 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 20:14:42,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:14:42,223 INFO L93 Difference]: Finished difference Result 902841 states and 1377257 transitions. [2020-10-12 20:14:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 20:14:42,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-12 20:14:42,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:14:43,790 INFO L225 Difference]: With dead ends: 902841 [2020-10-12 20:14:43,790 INFO L226 Difference]: Without dead ends: 831852 [2020-10-12 20:14:43,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=444, Invalid=1626, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 20:14:44,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831852 states. [2020-10-12 20:15:01,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831852 to 72388. [2020-10-12 20:15:01,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72388 states. [2020-10-12 20:15:02,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72388 states to 72388 states and 110058 transitions. [2020-10-12 20:15:02,011 INFO L78 Accepts]: Start accepts. Automaton has 72388 states and 110058 transitions. Word has length 104 [2020-10-12 20:15:02,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:02,011 INFO L479 AbstractCegarLoop]: Abstraction has 72388 states and 110058 transitions. [2020-10-12 20:15:02,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:15:02,011 INFO L276 IsEmpty]: Start isEmpty. Operand 72388 states and 110058 transitions. [2020-10-12 20:15:02,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:15:02,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:02,029 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] [2020-10-12 20:15:02,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:15:02,030 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:02,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:02,031 INFO L82 PathProgramCache]: Analyzing trace with hash -826435174, now seen corresponding path program 1 times [2020-10-12 20:15:02,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:02,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000758697] [2020-10-12 20:15:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:02,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:02,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:04,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:04,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:15:04,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:15:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2258 [2020-10-12 20:15:04,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:15:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:15:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 20:15:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:04,684 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:15:04,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:04,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:04,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:04,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:04,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:04,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:15:04,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:04,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:15:04,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:04,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:15:04,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:04,751 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 20:15:04,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000758697] [2020-10-12 20:15:04,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:04,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:15:04,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885085253] [2020-10-12 20:15:04,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:15:04,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:04,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:15:04,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:15:04,754 INFO L87 Difference]: Start difference. First operand 72388 states and 110058 transitions. Second operand 11 states. [2020-10-12 20:15:05,035 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 20:16:28,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:28,442 INFO L93 Difference]: Finished difference Result 719668 states and 1096447 transitions. [2020-10-12 20:16:28,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 20:16:28,443 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-12 20:16:28,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:29,612 INFO L225 Difference]: With dead ends: 719668 [2020-10-12 20:16:29,612 INFO L226 Difference]: Without dead ends: 658775 [2020-10-12 20:16:29,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=398, Invalid=1324, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 20:16:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658775 states.