/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:04:18,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:04:18,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:04:18,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:04:18,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:04:18,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:04:18,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:04:18,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:04:18,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:04:18,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:04:18,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:04:18,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:04:18,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:04:18,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:04:18,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:04:18,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:04:18,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:04:18,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:04:18,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:04:18,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:04:18,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:04:18,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:04:18,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:04:18,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:04:18,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:04:18,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:04:18,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:04:18,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:04:18,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:04:18,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:04:18,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:04:18,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:04:18,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:04:18,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:04:18,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:04:18,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:04:18,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:04:18,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:04:18,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:04:18,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:04:18,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:04:18,422 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 [2020-10-15 04:04:18,443 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:04:18,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:04:18,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:04:18,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:04:18,445 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:04:18,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:04:18,445 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:04:18,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:04:18,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:04:18,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:04:18,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:04:18,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:04:18,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:04:18,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:04:18,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:04:18,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:04:18,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:04:18,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:04:18,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:04:18,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:04:18,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:04:18,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:04:18,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:04:18,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:04:18,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:04:18,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:04:18,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:04:18,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:04:18,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:04:18,450 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:04:18,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:04:18,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:04:18,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:04:18,792 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:04:18,793 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:04:18,794 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-15 04:04:18,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3c3767b0/599674bfd2c146ff81b946e3728d9f6d/FLAG004a1cc86 [2020-10-15 04:04:19,307 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:04:19,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-15 04:04:19,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3c3767b0/599674bfd2c146ff81b946e3728d9f6d/FLAG004a1cc86 [2020-10-15 04:04:19,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3c3767b0/599674bfd2c146ff81b946e3728d9f6d [2020-10-15 04:04:19,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:04:19,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:04:19,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:04:19,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:04:19,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:04:19,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:04:19" (1/1) ... [2020-10-15 04:04:19,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35272ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:19, skipping insertion in model container [2020-10-15 04:04:19,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:04:19" (1/1) ... [2020-10-15 04:04:19,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:04:19,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:04:20,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:04:20,427 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:04:20,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:04:20,617 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:04:20,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:20 WrapperNode [2020-10-15 04:04:20,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:04:20,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:04:20,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:04:20,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:04:20,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:20" (1/1) ... [2020-10-15 04:04:20,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:20" (1/1) ... [2020-10-15 04:04:20,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:20" (1/1) ... [2020-10-15 04:04:20,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:20" (1/1) ... [2020-10-15 04:04:20,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:20" (1/1) ... [2020-10-15 04:04:20,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:20" (1/1) ... [2020-10-15 04:04:20,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:20" (1/1) ... [2020-10-15 04:04:20,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:04:20,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:04:20,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:04:20,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:04:20,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:20" (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 [2020-10-15 04:04:20,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:04:20,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:04:20,824 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:04:20,824 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:04:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:04:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:04:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:04:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:04:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:04:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:04:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:04:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:04:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:04:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:04:20,827 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:04:20,827 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:04:20,827 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:04:20,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:04:20,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:04:20,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:04:22,127 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:04:22,127 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:04:22,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:04:22 BoogieIcfgContainer [2020-10-15 04:04:22,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:04:22,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:04:22,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:04:22,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:04:22,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:04:19" (1/3) ... [2020-10-15 04:04:22,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7095c8f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:04:22, skipping insertion in model container [2020-10-15 04:04:22,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:20" (2/3) ... [2020-10-15 04:04:22,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7095c8f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:04:22, skipping insertion in model container [2020-10-15 04:04:22,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:04:22" (3/3) ... [2020-10-15 04:04:22,143 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-15 04:04:22,154 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:04:22,163 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:04:22,178 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:04:22,207 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:04:22,207 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:04:22,207 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:04:22,207 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:04:22,208 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:04:22,208 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:04:22,208 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:04:22,208 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:04:22,235 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states. [2020-10-15 04:04:22,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-15 04:04:22,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:22,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:04:22,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:22,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:22,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1532854484, now seen corresponding path program 1 times [2020-10-15 04:04:22,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:22,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064384509] [2020-10-15 04:04:22,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:23,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:23,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:23,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:23,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:24,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:24,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:24,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:24,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:25,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:26,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:27,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:27,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-15 04:04:27,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:04:27,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 04:04:27,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:27,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:04:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 04:04:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 04:04:27,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:04:28,362 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:04:28,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:28,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:28,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:28,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:28,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:28,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:04:28,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:28,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:28,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:28,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:28,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:28,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:04:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:04:28,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064384509] [2020-10-15 04:04:28,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:28,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:04:28,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334932096] [2020-10-15 04:04:28,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:04:28,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:28,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:04:28,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:04:28,479 INFO L87 Difference]: Start difference. First operand 329 states. Second operand 4 states. [2020-10-15 04:04:28,952 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-15 04:04:30,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:30,738 INFO L93 Difference]: Finished difference Result 661 states and 1150 transitions. [2020-10-15 04:04:30,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:04:30,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-15 04:04:30,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:30,775 INFO L225 Difference]: With dead ends: 661 [2020-10-15 04:04:30,775 INFO L226 Difference]: Without dead ends: 528 [2020-10-15 04:04:30,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:04:30,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-10-15 04:04:30,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 526. [2020-10-15 04:04:30,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-10-15 04:04:30,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 783 transitions. [2020-10-15 04:04:30,891 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 783 transitions. Word has length 154 [2020-10-15 04:04:30,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:30,893 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 783 transitions. [2020-10-15 04:04:30,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:04:30,893 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 783 transitions. [2020-10-15 04:04:30,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-15 04:04:30,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:30,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:04:30,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:04:30,898 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:30,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:30,899 INFO L82 PathProgramCache]: Analyzing trace with hash -679532236, now seen corresponding path program 1 times [2020-10-15 04:04:30,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:30,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408642531] [2020-10-15 04:04:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:31,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:31,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:31,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:31,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:31,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:31,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:31,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:32,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:32,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:32,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:33,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:34,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:36,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:36,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-15 04:04:36,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:04:36,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 04:04:36,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:36,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:04:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 04:04:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-15 04:04:36,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:04:36,327 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:04:36,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:36,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:36,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:36,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:36,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 04:04:36,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:36,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:36,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:36,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:36,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:04:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:04:36,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408642531] [2020-10-15 04:04:36,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:36,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:04:36,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141936593] [2020-10-15 04:04:36,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:04:36,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:36,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:04:36,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:04:36,465 INFO L87 Difference]: Start difference. First operand 526 states and 783 transitions. Second operand 4 states. [2020-10-15 04:04:36,800 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-15 04:04:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:38,649 INFO L93 Difference]: Finished difference Result 1106 states and 1692 transitions. [2020-10-15 04:04:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:04:38,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-15 04:04:38,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:38,661 INFO L225 Difference]: With dead ends: 1106 [2020-10-15 04:04:38,661 INFO L226 Difference]: Without dead ends: 902 [2020-10-15 04:04:38,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:04:38,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-10-15 04:04:38,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 900. [2020-10-15 04:04:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2020-10-15 04:04:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1351 transitions. [2020-10-15 04:04:38,739 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1351 transitions. Word has length 154 [2020-10-15 04:04:38,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:38,741 INFO L479 AbstractCegarLoop]: Abstraction has 900 states and 1351 transitions. [2020-10-15 04:04:38,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:04:38,741 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1351 transitions. [2020-10-15 04:04:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-15 04:04:38,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:38,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:04:38,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:04:38,756 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:38,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:38,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1720981640, now seen corresponding path program 1 times [2020-10-15 04:04:38,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:38,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919548010] [2020-10-15 04:04:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:39,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:39,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:39,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:39,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:39,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:39,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:39,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:40,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:40,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:42,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:43,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:43,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:43,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-15 04:04:43,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:04:43,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-15 04:04:43,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:43,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:04:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:04:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 04:04:43,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:04:44,320 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:04:44,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:44,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:44,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:44,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:44,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:44,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:04:44,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:44,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:44,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:44,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:44,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:44,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:04:44,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:04:44,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919548010] [2020-10-15 04:04:44,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:44,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:04:44,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995942074] [2020-10-15 04:04:44,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:04:44,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:44,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:04:44,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:04:44,416 INFO L87 Difference]: Start difference. First operand 900 states and 1351 transitions. Second operand 5 states. [2020-10-15 04:04:46,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:46,690 INFO L93 Difference]: Finished difference Result 2610 states and 3906 transitions. [2020-10-15 04:04:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:04:46,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-15 04:04:46,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:46,706 INFO L225 Difference]: With dead ends: 2610 [2020-10-15 04:04:46,706 INFO L226 Difference]: Without dead ends: 1727 [2020-10-15 04:04:46,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:04:46,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2020-10-15 04:04:46,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1725. [2020-10-15 04:04:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2020-10-15 04:04:46,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2557 transitions. [2020-10-15 04:04:46,816 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2557 transitions. Word has length 154 [2020-10-15 04:04:46,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:46,817 INFO L479 AbstractCegarLoop]: Abstraction has 1725 states and 2557 transitions. [2020-10-15 04:04:46,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:04:46,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2557 transitions. [2020-10-15 04:04:46,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-15 04:04:46,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:46,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:04:46,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:04:46,823 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:46,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:46,823 INFO L82 PathProgramCache]: Analyzing trace with hash 531602913, now seen corresponding path program 1 times [2020-10-15 04:04:46,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:46,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742311425] [2020-10-15 04:04:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:46,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:47,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:47,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:47,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:47,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:47,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:47,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:47,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:47,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:50,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:50,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:51,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:51,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-15 04:04:51,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:04:51,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 04:04:51,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:51,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:04:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:04:51,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-15 04:04:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:04:52,285 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:04:52,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:52,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:52,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:52,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:52,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:04:52,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:52,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:52,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:52,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:04:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:04:52,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742311425] [2020-10-15 04:04:52,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:52,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:04:52,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333296947] [2020-10-15 04:04:52,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:04:52,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:52,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:04:52,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:04:52,456 INFO L87 Difference]: Start difference. First operand 1725 states and 2557 transitions. Second operand 5 states. [2020-10-15 04:04:55,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:55,566 INFO L93 Difference]: Finished difference Result 4863 states and 7211 transitions. [2020-10-15 04:04:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:04:55,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-15 04:04:55,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:55,586 INFO L225 Difference]: With dead ends: 4863 [2020-10-15 04:04:55,586 INFO L226 Difference]: Without dead ends: 3329 [2020-10-15 04:04:55,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:04:55,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2020-10-15 04:04:55,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 3327. [2020-10-15 04:04:55,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3327 states. [2020-10-15 04:04:55,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 4875 transitions. [2020-10-15 04:04:55,796 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 4875 transitions. Word has length 155 [2020-10-15 04:04:55,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:55,796 INFO L479 AbstractCegarLoop]: Abstraction has 3327 states and 4875 transitions. [2020-10-15 04:04:55,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:04:55,796 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 4875 transitions. [2020-10-15 04:04:55,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-15 04:04:55,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:55,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:04:55,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:04:55,804 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:55,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1739066262, now seen corresponding path program 1 times [2020-10-15 04:04:55,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:55,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616078326] [2020-10-15 04:04:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:55,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:55,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:55,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:56,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:56,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:56,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:56,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:56,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:57,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:58,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:58,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:00,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:00,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-15 04:05:00,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:05:00,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 04:05:00,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:00,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:05:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 04:05:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:01,171 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:05:01,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:01,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:01,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:01,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:01,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:01,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:05:01,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:01,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:01,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:01,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:01,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:01,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:05:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:01,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616078326] [2020-10-15 04:05:01,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:01,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:01,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72560633] [2020-10-15 04:05:01,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:01,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:01,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:01,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:01,290 INFO L87 Difference]: Start difference. First operand 3327 states and 4875 transitions. Second operand 5 states. [2020-10-15 04:05:04,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:04,347 INFO L93 Difference]: Finished difference Result 9547 states and 13957 transitions. [2020-10-15 04:05:04,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:05:04,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-15 04:05:04,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:04,379 INFO L225 Difference]: With dead ends: 9547 [2020-10-15 04:05:04,379 INFO L226 Difference]: Without dead ends: 6397 [2020-10-15 04:05:04,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:05:04,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6397 states. [2020-10-15 04:05:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6397 to 6395. [2020-10-15 04:05:04,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6395 states. [2020-10-15 04:05:04,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6395 states to 6395 states and 9247 transitions. [2020-10-15 04:05:04,926 INFO L78 Accepts]: Start accepts. Automaton has 6395 states and 9247 transitions. Word has length 156 [2020-10-15 04:05:04,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:04,926 INFO L479 AbstractCegarLoop]: Abstraction has 6395 states and 9247 transitions. [2020-10-15 04:05:04,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:04,926 INFO L276 IsEmpty]: Start isEmpty. Operand 6395 states and 9247 transitions. [2020-10-15 04:05:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-15 04:05:04,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:04,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:04,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:05:04,938 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:04,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:04,938 INFO L82 PathProgramCache]: Analyzing trace with hash 922099138, now seen corresponding path program 1 times [2020-10-15 04:05:04,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:04,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579255883] [2020-10-15 04:05:04,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:04,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:05,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:05,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:05,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:05,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:05,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:05,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:05,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:09,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:09,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-15 04:05:09,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:05:09,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 04:05:09,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:09,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:05:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 04:05:09,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:10,279 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:05:10,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:10,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:10,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:10,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:10,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:10,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:05:10,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:10,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:10,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:05:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:10,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579255883] [2020-10-15 04:05:10,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:10,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:10,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767129280] [2020-10-15 04:05:10,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:10,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:10,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:10,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:10,358 INFO L87 Difference]: Start difference. First operand 6395 states and 9247 transitions. Second operand 5 states. [2020-10-15 04:05:13,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:13,442 INFO L93 Difference]: Finished difference Result 18768 states and 27046 transitions. [2020-10-15 04:05:13,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:05:13,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-15 04:05:13,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:13,503 INFO L225 Difference]: With dead ends: 18768 [2020-10-15 04:05:13,504 INFO L226 Difference]: Without dead ends: 12486 [2020-10-15 04:05:13,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:05:13,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12486 states. [2020-10-15 04:05:14,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12486 to 12484. [2020-10-15 04:05:14,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12484 states. [2020-10-15 04:05:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12484 states to 12484 states and 17852 transitions. [2020-10-15 04:05:14,366 INFO L78 Accepts]: Start accepts. Automaton has 12484 states and 17852 transitions. Word has length 157 [2020-10-15 04:05:14,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:14,367 INFO L479 AbstractCegarLoop]: Abstraction has 12484 states and 17852 transitions. [2020-10-15 04:05:14,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:14,367 INFO L276 IsEmpty]: Start isEmpty. Operand 12484 states and 17852 transitions. [2020-10-15 04:05:14,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-15 04:05:14,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:14,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:14,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:05:14,388 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:14,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:14,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1360448020, now seen corresponding path program 1 times [2020-10-15 04:05:14,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:14,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454178938] [2020-10-15 04:05:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:14,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:14,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:14,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:17,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:19,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:19,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-15 04:05:19,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:05:19,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:05:19,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:19,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:05:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-15 04:05:19,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:19,688 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:05:19,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:19,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:19,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:19,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:19,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:19,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:05:19,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:19,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:19,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:19,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:19,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:19,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:05:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:19,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454178938] [2020-10-15 04:05:19,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:19,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:19,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304508544] [2020-10-15 04:05:19,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:19,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:19,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:19,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:19,786 INFO L87 Difference]: Start difference. First operand 12484 states and 17852 transitions. Second operand 5 states. [2020-10-15 04:05:23,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:23,237 INFO L93 Difference]: Finished difference Result 32790 states and 46798 transitions. [2020-10-15 04:05:23,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:05:23,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-15 04:05:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:23,427 INFO L225 Difference]: With dead ends: 32790 [2020-10-15 04:05:23,427 INFO L226 Difference]: Without dead ends: 21524 [2020-10-15 04:05:23,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:05:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21524 states. [2020-10-15 04:05:24,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21524 to 21522. [2020-10-15 04:05:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21522 states. [2020-10-15 04:05:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21522 states to 21522 states and 30212 transitions. [2020-10-15 04:05:24,659 INFO L78 Accepts]: Start accepts. Automaton has 21522 states and 30212 transitions. Word has length 158 [2020-10-15 04:05:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:24,659 INFO L479 AbstractCegarLoop]: Abstraction has 21522 states and 30212 transitions. [2020-10-15 04:05:24,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:24,659 INFO L276 IsEmpty]: Start isEmpty. Operand 21522 states and 30212 transitions. [2020-10-15 04:05:24,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-15 04:05:24,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:24,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:24,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:05:24,685 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:24,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:24,685 INFO L82 PathProgramCache]: Analyzing trace with hash -565789664, now seen corresponding path program 1 times [2020-10-15 04:05:24,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:24,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967268857] [2020-10-15 04:05:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:24,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:24,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:24,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:24,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:24,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:24,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:29,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:29,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-15 04:05:29,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:05:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 04:05:29,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:29,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 04:05:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 04:05:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:29,984 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:05:29,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:29,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:29,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:29,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:29,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:05:29,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:29,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:30,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967268857] [2020-10-15 04:05:30,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:30,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:30,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101331400] [2020-10-15 04:05:30,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:30,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:30,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:30,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:30,034 INFO L87 Difference]: Start difference. First operand 21522 states and 30212 transitions. Second operand 5 states. [2020-10-15 04:05:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:32,130 INFO L93 Difference]: Finished difference Result 37898 states and 53153 transitions. [2020-10-15 04:05:32,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:05:32,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-15 04:05:32,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:32,166 INFO L225 Difference]: With dead ends: 37898 [2020-10-15 04:05:32,166 INFO L226 Difference]: Without dead ends: 16469 [2020-10-15 04:05:32,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:05:32,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16469 states. [2020-10-15 04:05:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16469 to 16469. [2020-10-15 04:05:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16469 states. [2020-10-15 04:05:34,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16469 states to 16469 states and 23085 transitions. [2020-10-15 04:05:34,001 INFO L78 Accepts]: Start accepts. Automaton has 16469 states and 23085 transitions. Word has length 159 [2020-10-15 04:05:34,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:34,001 INFO L479 AbstractCegarLoop]: Abstraction has 16469 states and 23085 transitions. [2020-10-15 04:05:34,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:34,001 INFO L276 IsEmpty]: Start isEmpty. Operand 16469 states and 23085 transitions. [2020-10-15 04:05:34,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-15 04:05:34,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:34,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:34,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:05:34,017 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:34,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:34,017 INFO L82 PathProgramCache]: Analyzing trace with hash -269313812, now seen corresponding path program 1 times [2020-10-15 04:05:34,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:34,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123066453] [2020-10-15 04:05:34,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:34,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:34,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:34,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:34,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:34,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:34,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:35,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:39,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:39,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-15 04:05:39,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:05:39,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:05:39,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:39,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:39,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:39,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:05:39,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 04:05:39,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:39,330 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:05:39,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:39,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:39,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:39,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:39,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:39,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:05:39,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:39,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:39,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123066453] [2020-10-15 04:05:39,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:39,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:39,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962809056] [2020-10-15 04:05:39,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:39,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:39,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:39,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:39,397 INFO L87 Difference]: Start difference. First operand 16469 states and 23085 transitions. Second operand 5 states. [2020-10-15 04:05:43,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:43,154 INFO L93 Difference]: Finished difference Result 40266 states and 56394 transitions. [2020-10-15 04:05:43,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:05:43,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-15 04:05:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:43,195 INFO L225 Difference]: With dead ends: 40266 [2020-10-15 04:05:43,196 INFO L226 Difference]: Without dead ends: 24792 [2020-10-15 04:05:43,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:05:43,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24792 states. [2020-10-15 04:05:44,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24792 to 24790. [2020-10-15 04:05:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24790 states. [2020-10-15 04:05:44,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24790 states to 24790 states and 34198 transitions. [2020-10-15 04:05:44,597 INFO L78 Accepts]: Start accepts. Automaton has 24790 states and 34198 transitions. Word has length 161 [2020-10-15 04:05:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:44,598 INFO L479 AbstractCegarLoop]: Abstraction has 24790 states and 34198 transitions. [2020-10-15 04:05:44,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 24790 states and 34198 transitions. [2020-10-15 04:05:44,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-15 04:05:44,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:44,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:44,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:05:44,618 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:44,618 INFO L82 PathProgramCache]: Analyzing trace with hash -978605195, now seen corresponding path program 1 times [2020-10-15 04:05:44,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:44,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689796877] [2020-10-15 04:05:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:44,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:44,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:44,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:44,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:44,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:44,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:44,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:46,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:46,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:49,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:49,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-15 04:05:49,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:05:49,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:05:49,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:49,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:05:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 04:05:49,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:49,945 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:05:49,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:49,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:49,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:49,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:49,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:05:49,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:49,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:49,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:05:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:49,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689796877] [2020-10-15 04:05:49,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:49,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:49,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127857459] [2020-10-15 04:05:49,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:49,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:49,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:49,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:49,991 INFO L87 Difference]: Start difference. First operand 24790 states and 34198 transitions. Second operand 5 states. [2020-10-15 04:05:50,246 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-15 04:05:54,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:54,553 INFO L93 Difference]: Finished difference Result 44242 states and 60888 transitions. [2020-10-15 04:05:54,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:05:54,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-15 04:05:54,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:54,589 INFO L225 Difference]: With dead ends: 44242 [2020-10-15 04:05:54,590 INFO L226 Difference]: Without dead ends: 24750 [2020-10-15 04:05:54,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:05:54,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24750 states. [2020-10-15 04:05:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24750 to 24748. [2020-10-15 04:05:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24748 states. [2020-10-15 04:05:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24748 states to 24748 states and 34021 transitions. [2020-10-15 04:05:56,313 INFO L78 Accepts]: Start accepts. Automaton has 24748 states and 34021 transitions. Word has length 162 [2020-10-15 04:05:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:56,314 INFO L479 AbstractCegarLoop]: Abstraction has 24748 states and 34021 transitions. [2020-10-15 04:05:56,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:56,314 INFO L276 IsEmpty]: Start isEmpty. Operand 24748 states and 34021 transitions. [2020-10-15 04:05:56,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-15 04:05:56,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:56,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:56,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:05:56,332 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:56,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:56,332 INFO L82 PathProgramCache]: Analyzing trace with hash -955058732, now seen corresponding path program 1 times [2020-10-15 04:05:56,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:56,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62592640] [2020-10-15 04:05:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:56,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:56,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:56,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:56,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:56,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:56,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:56,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:56,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:01,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:01,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-15 04:06:01,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:06:01,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 04:06:01,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:01,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:06:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:06:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-15 04:06:01,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:01,695 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:06:01,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:01,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:01,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:01,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:01,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:06:01,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:01,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:06:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:06:01,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:01,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62592640] [2020-10-15 04:06:01,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:01,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 04:06:01,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835743616] [2020-10-15 04:06:01,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:06:01,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:01,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:06:01,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:06:01,769 INFO L87 Difference]: Start difference. First operand 24748 states and 34021 transitions. Second operand 9 states. [2020-10-15 04:06:02,036 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 04:06:09,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:09,564 INFO L93 Difference]: Finished difference Result 87960 states and 126452 transitions. [2020-10-15 04:06:09,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:06:09,565 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-10-15 04:06:09,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:09,654 INFO L225 Difference]: With dead ends: 87960 [2020-10-15 04:06:09,654 INFO L226 Difference]: Without dead ends: 66765 [2020-10-15 04:06:09,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-15 04:06:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66765 states. [2020-10-15 04:06:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66765 to 35406. [2020-10-15 04:06:12,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35406 states. [2020-10-15 04:06:12,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35406 states to 35406 states and 49385 transitions. [2020-10-15 04:06:12,658 INFO L78 Accepts]: Start accepts. Automaton has 35406 states and 49385 transitions. Word has length 163 [2020-10-15 04:06:12,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:12,659 INFO L479 AbstractCegarLoop]: Abstraction has 35406 states and 49385 transitions. [2020-10-15 04:06:12,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:06:12,659 INFO L276 IsEmpty]: Start isEmpty. Operand 35406 states and 49385 transitions. [2020-10-15 04:06:12,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-15 04:06:12,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:12,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:06:12,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:06:12,673 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:12,673 INFO L82 PathProgramCache]: Analyzing trace with hash 2099904748, now seen corresponding path program 1 times [2020-10-15 04:06:12,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:12,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199147621] [2020-10-15 04:06:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:12,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:12,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:12,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:12,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:17,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:17,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-15 04:06:17,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:06:17,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:06:17,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:17,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 04:06:17,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 04:06:17,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:17,990 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:06:17,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:17,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:18,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:18,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:18,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:18,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:06:18,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:18,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:18,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199147621] [2020-10-15 04:06:18,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:18,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:18,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072934909] [2020-10-15 04:06:18,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:18,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:18,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:18,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:18,050 INFO L87 Difference]: Start difference. First operand 35406 states and 49385 transitions. Second operand 5 states. [2020-10-15 04:06:22,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:22,169 INFO L93 Difference]: Finished difference Result 65812 states and 91977 transitions. [2020-10-15 04:06:22,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:22,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-15 04:06:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:22,201 INFO L225 Difference]: With dead ends: 65812 [2020-10-15 04:06:22,201 INFO L226 Difference]: Without dead ends: 31012 [2020-10-15 04:06:22,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:06:22,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31012 states. [2020-10-15 04:06:24,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31012 to 31012. [2020-10-15 04:06:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31012 states. [2020-10-15 04:06:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31012 states to 31012 states and 43277 transitions. [2020-10-15 04:06:24,602 INFO L78 Accepts]: Start accepts. Automaton has 31012 states and 43277 transitions. Word has length 163 [2020-10-15 04:06:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:24,603 INFO L479 AbstractCegarLoop]: Abstraction has 31012 states and 43277 transitions. [2020-10-15 04:06:24,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:06:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 31012 states and 43277 transitions. [2020-10-15 04:06:24,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-15 04:06:24,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:24,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:06:24,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:06:24,616 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:24,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:24,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1093359420, now seen corresponding path program 1 times [2020-10-15 04:06:24,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:24,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476802900] [2020-10-15 04:06:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:24,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:24,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:24,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:24,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:24,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:29,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:29,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 04:06:29,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:06:29,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:06:29,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:29,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:29,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:06:29,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:06:29,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 04:06:29,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:30,034 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:06:30,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:30,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:30,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:30,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:30,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:30,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:06:30,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:30,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:30,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:06:30,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:30,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:06:30,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:30,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476802900] [2020-10-15 04:06:30,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:30,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 04:06:30,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044524096] [2020-10-15 04:06:30,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:06:30,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:30,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:06:30,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:06:30,100 INFO L87 Difference]: Start difference. First operand 31012 states and 43277 transitions. Second operand 9 states. [2020-10-15 04:06:30,383 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 04:06:41,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:41,659 INFO L93 Difference]: Finished difference Result 119215 states and 171508 transitions. [2020-10-15 04:06:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:06:41,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2020-10-15 04:06:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:41,769 INFO L225 Difference]: With dead ends: 119215 [2020-10-15 04:06:41,770 INFO L226 Difference]: Without dead ends: 91671 [2020-10-15 04:06:41,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-15 04:06:41,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91671 states. [2020-10-15 04:06:46,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91671 to 52838. [2020-10-15 04:06:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52838 states. [2020-10-15 04:06:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52838 states to 52838 states and 73699 transitions. [2020-10-15 04:06:46,976 INFO L78 Accepts]: Start accepts. Automaton has 52838 states and 73699 transitions. Word has length 164 [2020-10-15 04:06:46,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:46,976 INFO L479 AbstractCegarLoop]: Abstraction has 52838 states and 73699 transitions. [2020-10-15 04:06:46,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:06:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 52838 states and 73699 transitions. [2020-10-15 04:06:46,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-15 04:06:46,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:46,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:06:46,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:06:46,993 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:46,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:46,993 INFO L82 PathProgramCache]: Analyzing trace with hash 177914991, now seen corresponding path program 1 times [2020-10-15 04:06:46,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:46,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484196873] [2020-10-15 04:06:46,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:47,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:47,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:47,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:47,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:47,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:49,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:52,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:52,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 04:06:52,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:06:52,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:06:52,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:52,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:52,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 04:06:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 04:06:52,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:52,289 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:06:52,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:52,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:52,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:52,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:52,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:52,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:06:52,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:52,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:52,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484196873] [2020-10-15 04:06:52,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:52,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:52,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165658412] [2020-10-15 04:06:52,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:52,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:52,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:52,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:52,333 INFO L87 Difference]: Start difference. First operand 52838 states and 73699 transitions. Second operand 5 states. [2020-10-15 04:06:57,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:57,306 INFO L93 Difference]: Finished difference Result 91989 states and 128225 transitions. [2020-10-15 04:06:57,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:57,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-15 04:06:57,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:57,353 INFO L225 Difference]: With dead ends: 91989 [2020-10-15 04:06:57,353 INFO L226 Difference]: Without dead ends: 39486 [2020-10-15 04:06:57,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:06:57,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39486 states. [2020-10-15 04:07:02,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39486 to 39476. [2020-10-15 04:07:02,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39476 states. [2020-10-15 04:07:02,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39476 states to 39476 states and 54925 transitions. [2020-10-15 04:07:02,189 INFO L78 Accepts]: Start accepts. Automaton has 39476 states and 54925 transitions. Word has length 164 [2020-10-15 04:07:02,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:02,189 INFO L479 AbstractCegarLoop]: Abstraction has 39476 states and 54925 transitions. [2020-10-15 04:07:02,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:02,189 INFO L276 IsEmpty]: Start isEmpty. Operand 39476 states and 54925 transitions. [2020-10-15 04:07:02,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-15 04:07:02,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:02,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:07:02,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:07:02,201 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:02,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:02,202 INFO L82 PathProgramCache]: Analyzing trace with hash -4350184, now seen corresponding path program 1 times [2020-10-15 04:07:02,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:02,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427127454] [2020-10-15 04:07:02,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:02,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:07,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:07,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:07,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:07,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-15 04:07:07,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:07:07,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 04:07:07,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:07,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:07:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-15 04:07:07,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:07,534 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:07:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:07,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:07,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:07,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:07,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:07,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:07:07,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:07,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:07,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:07,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:07,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:07,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:07:07,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427127454] [2020-10-15 04:07:07,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:07,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:07,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154295473] [2020-10-15 04:07:07,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:07,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:07,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:07,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:07,613 INFO L87 Difference]: Start difference. First operand 39476 states and 54925 transitions. Second operand 5 states. [2020-10-15 04:07:07,859 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-15 04:07:14,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:14,179 INFO L93 Difference]: Finished difference Result 69732 states and 97074 transitions. [2020-10-15 04:07:14,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:07:14,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-15 04:07:14,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:14,234 INFO L225 Difference]: With dead ends: 69732 [2020-10-15 04:07:14,234 INFO L226 Difference]: Without dead ends: 39467 [2020-10-15 04:07:14,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:07:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39467 states. [2020-10-15 04:07:18,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39467 to 39465. [2020-10-15 04:07:18,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39465 states. [2020-10-15 04:07:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39465 states to 39465 states and 54697 transitions. [2020-10-15 04:07:18,292 INFO L78 Accepts]: Start accepts. Automaton has 39465 states and 54697 transitions. Word has length 167 [2020-10-15 04:07:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:18,293 INFO L479 AbstractCegarLoop]: Abstraction has 39465 states and 54697 transitions. [2020-10-15 04:07:18,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 39465 states and 54697 transitions. [2020-10-15 04:07:18,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-15 04:07:18,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:18,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:07:18,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:07:18,302 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:18,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:18,303 INFO L82 PathProgramCache]: Analyzing trace with hash -713732702, now seen corresponding path program 1 times [2020-10-15 04:07:18,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:18,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960593328] [2020-10-15 04:07:18,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:18,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:18,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:18,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:19,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:19,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:23,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:23,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-15 04:07:23,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:07:23,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 04:07:23,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:23,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:07:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:07:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-15 04:07:23,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:23,649 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:07:23,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:23,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:23,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:23,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:23,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:23,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:07:23,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:23,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:07:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:07:23,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:07:23,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960593328] [2020-10-15 04:07:23,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:23,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 04:07:23,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603732614] [2020-10-15 04:07:23,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:07:23,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:23,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:07:23,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:07:23,723 INFO L87 Difference]: Start difference. First operand 39465 states and 54697 transitions. Second operand 9 states. [2020-10-15 04:07:23,977 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 04:07:38,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:38,462 INFO L93 Difference]: Finished difference Result 149102 states and 211000 transitions. [2020-10-15 04:07:38,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:07:38,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-10-15 04:07:38,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:38,610 INFO L225 Difference]: With dead ends: 149102 [2020-10-15 04:07:38,611 INFO L226 Difference]: Without dead ends: 111218 [2020-10-15 04:07:38,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-15 04:07:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111218 states. [2020-10-15 04:07:43,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111218 to 46299. [2020-10-15 04:07:43,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46299 states. [2020-10-15 04:07:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46299 states to 46299 states and 64094 transitions. [2020-10-15 04:07:43,839 INFO L78 Accepts]: Start accepts. Automaton has 46299 states and 64094 transitions. Word has length 168 [2020-10-15 04:07:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:43,840 INFO L479 AbstractCegarLoop]: Abstraction has 46299 states and 64094 transitions. [2020-10-15 04:07:43,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:07:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 46299 states and 64094 transitions. [2020-10-15 04:07:43,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-15 04:07:43,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:43,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:07:43,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:07:43,851 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:43,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:43,851 INFO L82 PathProgramCache]: Analyzing trace with hash 2080492807, now seen corresponding path program 1 times [2020-10-15 04:07:43,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:43,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852871527] [2020-10-15 04:07:43,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:44,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:44,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:44,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:44,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:44,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:47,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:47,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-15 04:07:47,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:07:47,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3443 [2020-10-15 04:07:47,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:47,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:07:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-15 04:07:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 04:07:47,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:47,704 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:07:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:47,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:47,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:47,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:47,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:47,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:07:47,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:47,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:07:47,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852871527] [2020-10-15 04:07:47,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:47,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:07:47,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784391288] [2020-10-15 04:07:47,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:07:47,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:47,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:07:47,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:07:47,741 INFO L87 Difference]: Start difference. First operand 46299 states and 64094 transitions. Second operand 4 states. [2020-10-15 04:07:58,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:58,565 INFO L93 Difference]: Finished difference Result 114910 states and 161247 transitions. [2020-10-15 04:07:58,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:07:58,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-10-15 04:07:58,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:58,666 INFO L225 Difference]: With dead ends: 114910 [2020-10-15 04:07:58,666 INFO L226 Difference]: Without dead ends: 71985 [2020-10-15 04:07:58,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:07:58,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71985 states.