/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_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:15:20,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:15:20,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:15:20,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:15:20,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:15:20,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:15:20,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:15:20,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:15:20,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:15:20,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:15:20,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:15:20,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:15:20,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:15:20,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:15:20,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:15:20,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:15:20,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:15:20,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:15:20,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:15:20,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:15:20,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:15:20,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:15:20,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:15:20,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:15:20,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:15:20,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:15:20,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:15:20,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:15:20,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:15:20,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:15:20,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:15:20,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:15:20,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:15:20,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:15:20,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:15:20,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:15:20,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:15:20,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:15:20,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:15:20,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:15:20,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:15:20,689 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 03:15:20,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:15:20,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:15:20,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:15:20,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:15:20,729 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:15:20,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:15:20,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:15:20,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:15:20,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:15:20,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:15:20,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:15:20,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:15:20,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:15:20,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:15:20,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:15:20,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:15:20,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:15:20,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:15:20,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:15:20,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:15:20,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:15:20,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:15:20,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:15:20,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:15:20,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:15:20,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:15:20,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:15:20,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:15:20,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:15:20,735 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 03:15:21,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:15:21,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:15:21,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:15:21,077 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:15:21,078 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:15:21,078 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 03:15:21,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06b260c6b/c7b2394a41114028ba69839ff801d61e/FLAGe80850cf9 [2020-10-15 03:15:21,735 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:15:21,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 03:15:21,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06b260c6b/c7b2394a41114028ba69839ff801d61e/FLAGe80850cf9 [2020-10-15 03:15:21,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06b260c6b/c7b2394a41114028ba69839ff801d61e [2020-10-15 03:15:21,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:15:21,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:15:21,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:15:21,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:15:21,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:15:21,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:15:21" (1/1) ... [2020-10-15 03:15:21,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362c35e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:21, skipping insertion in model container [2020-10-15 03:15:21,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:15:21" (1/1) ... [2020-10-15 03:15:21,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:15:22,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:15:22,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:15:22,646 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:15:22,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:15:22,847 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:15:22,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22 WrapperNode [2020-10-15 03:15:22,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:15:22,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:15:22,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:15:22,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:15:22,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:22,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:22,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:22,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:22,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:22,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:23,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:23,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:15:23,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:15:23,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:15:23,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:15:23,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (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 03:15:23,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:15:23,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:15:23,154 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:15:23,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:15:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:15:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:15:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:15:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:15:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:15:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:15:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:15:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:15:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:15:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:15:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:15:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:15:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:15:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:15:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:15:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:15:24,475 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:15:24,475 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:15:24,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:15:24 BoogieIcfgContainer [2020-10-15 03:15:24,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:15:24,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:15:24,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:15:24,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:15:24,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:15:21" (1/3) ... [2020-10-15 03:15:24,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7909827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:15:24, skipping insertion in model container [2020-10-15 03:15:24,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (2/3) ... [2020-10-15 03:15:24,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7909827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:15:24, skipping insertion in model container [2020-10-15 03:15:24,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:15:24" (3/3) ... [2020-10-15 03:15:24,491 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 03:15:24,500 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:15:24,510 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-15 03:15:24,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-15 03:15:24,550 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:15:24,550 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:15:24,550 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:15:24,550 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:15:24,550 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:15:24,551 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:15:24,551 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:15:24,551 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:15:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states. [2020-10-15 03:15:24,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 03:15:24,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:24,587 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] [2020-10-15 03:15:24,588 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:24,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:24,594 INFO L82 PathProgramCache]: Analyzing trace with hash -932481986, now seen corresponding path program 1 times [2020-10-15 03:15:24,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:24,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333979170] [2020-10-15 03:15:24,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:24,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:25,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:25,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:26,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:26,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:27,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:27,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:29,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 03:15:29,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:15:29,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:15:29,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:29,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:29,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:15:29,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:15:29,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:15:29,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:15:30,325 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:15:30,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:30,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:30,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:30,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:30,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:30,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:15:30,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:30,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:30,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:30,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:30,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:30,370 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 03:15:30,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333979170] [2020-10-15 03:15:30,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:30,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:15:30,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010927917] [2020-10-15 03:15:30,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:15:30,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:30,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:15:30,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:15:30,401 INFO L87 Difference]: Start difference. First operand 212 states. Second operand 8 states. [2020-10-15 03:15:30,768 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:15:31,247 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-15 03:15:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:33,993 INFO L93 Difference]: Finished difference Result 649 states and 1039 transitions. [2020-10-15 03:15:33,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:15:33,996 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-15 03:15:33,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:34,055 INFO L225 Difference]: With dead ends: 649 [2020-10-15 03:15:34,056 INFO L226 Difference]: Without dead ends: 554 [2020-10-15 03:15:34,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:15:34,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2020-10-15 03:15:34,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 409. [2020-10-15 03:15:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-10-15 03:15:34,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 555 transitions. [2020-10-15 03:15:34,261 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 555 transitions. Word has length 51 [2020-10-15 03:15:34,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:34,263 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 555 transitions. [2020-10-15 03:15:34,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:15:34,264 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 555 transitions. [2020-10-15 03:15:34,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 03:15:34,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:34,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:15:34,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:15:34,282 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:34,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:34,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1841418149, now seen corresponding path program 1 times [2020-10-15 03:15:34,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:34,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917431880] [2020-10-15 03:15:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:34,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:34,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:34,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:34,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:35,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:35,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:35,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:36,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:37,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:38,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:38,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:39,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:39,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 03:15:39,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:15:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 03:15:39,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:39,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:15:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:15:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:15:39,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:39,697 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-10-15 03:15:39,921 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:15:39,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:39,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:39,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:39,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:39,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:39,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:15:39,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:39,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:39,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:39,988 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 03:15:39,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917431880] [2020-10-15 03:15:39,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:39,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:15:39,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240468660] [2020-10-15 03:15:39,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:15:39,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:39,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:15:39,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:15:39,998 INFO L87 Difference]: Start difference. First operand 409 states and 555 transitions. Second operand 8 states. [2020-10-15 03:15:40,446 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:15:42,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:42,575 INFO L93 Difference]: Finished difference Result 723 states and 972 transitions. [2020-10-15 03:15:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 03:15:42,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-15 03:15:42,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:42,580 INFO L225 Difference]: With dead ends: 723 [2020-10-15 03:15:42,580 INFO L226 Difference]: Without dead ends: 547 [2020-10-15 03:15:42,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:15:42,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-10-15 03:15:42,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 397. [2020-10-15 03:15:42,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-15 03:15:42,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 535 transitions. [2020-10-15 03:15:42,611 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 535 transitions. Word has length 51 [2020-10-15 03:15:42,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:42,612 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 535 transitions. [2020-10-15 03:15:42,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:15:42,612 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 535 transitions. [2020-10-15 03:15:42,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 03:15:42,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:42,614 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] [2020-10-15 03:15:42,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:15:42,615 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:42,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:42,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1896116347, now seen corresponding path program 1 times [2020-10-15 03:15:42,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:42,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125071979] [2020-10-15 03:15:42,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:42,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:42,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:42,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:42,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:43,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:43,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:43,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:45,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:45,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:45,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:47,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:47,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:47,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:47,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:47,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:47,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:47,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 03:15:47,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:15:47,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:15:47,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:47,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:47,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:15:47,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:15:47,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:15:47,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:47,913 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:15:47,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:47,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:47,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:47,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:47,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:15:47,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:47,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:15:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:15:47,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:15:48,043 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 03:15:48,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125071979] [2020-10-15 03:15:48,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:48,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:15:48,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344729269] [2020-10-15 03:15:48,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:15:48,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:48,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:15:48,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:15:48,064 INFO L87 Difference]: Start difference. First operand 397 states and 535 transitions. Second operand 8 states. [2020-10-15 03:15:48,281 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-15 03:15:50,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:50,685 INFO L93 Difference]: Finished difference Result 947 states and 1372 transitions. [2020-10-15 03:15:50,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:15:50,686 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-15 03:15:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:50,692 INFO L225 Difference]: With dead ends: 947 [2020-10-15 03:15:50,692 INFO L226 Difference]: Without dead ends: 735 [2020-10-15 03:15:50,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:15:50,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2020-10-15 03:15:50,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 403. [2020-10-15 03:15:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-15 03:15:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 540 transitions. [2020-10-15 03:15:50,752 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 540 transitions. Word has length 51 [2020-10-15 03:15:50,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:50,755 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 540 transitions. [2020-10-15 03:15:50,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:15:50,756 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 540 transitions. [2020-10-15 03:15:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:15:50,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:50,757 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] [2020-10-15 03:15:50,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:15:50,758 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:50,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:50,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1711023661, now seen corresponding path program 1 times [2020-10-15 03:15:50,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:50,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892816720] [2020-10-15 03:15:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:50,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:50,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:51,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:51,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:51,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:53,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:53,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:53,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:53,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:54,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:54,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:54,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:54,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:55,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:55,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:15:55,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 03:15:55,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:15:55,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:55,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:15:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:15:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:15:55,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:56,226 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:15:56,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:56,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:56,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:56,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:56,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:56,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 03:15:56,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:56,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:56,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:15:56,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:56,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:15:56,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:56,296 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 03:15:56,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892816720] [2020-10-15 03:15:56,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:56,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:15:56,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935990728] [2020-10-15 03:15:56,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:15:56,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:56,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:15:56,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:15:56,298 INFO L87 Difference]: Start difference. First operand 403 states and 540 transitions. Second operand 7 states. [2020-10-15 03:15:56,490 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-15 03:15:58,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:58,006 INFO L93 Difference]: Finished difference Result 957 states and 1367 transitions. [2020-10-15 03:15:58,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:15:58,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-15 03:15:58,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:58,011 INFO L225 Difference]: With dead ends: 957 [2020-10-15 03:15:58,011 INFO L226 Difference]: Without dead ends: 781 [2020-10-15 03:15:58,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:15:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-10-15 03:15:58,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 246. [2020-10-15 03:15:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-15 03:15:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 303 transitions. [2020-10-15 03:15:58,036 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 303 transitions. Word has length 52 [2020-10-15 03:15:58,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:58,036 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 303 transitions. [2020-10-15 03:15:58,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:15:58,036 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 303 transitions. [2020-10-15 03:15:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:15:58,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:58,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:15:58,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:15:58,038 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:58,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:58,038 INFO L82 PathProgramCache]: Analyzing trace with hash -783805756, now seen corresponding path program 1 times [2020-10-15 03:15:58,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:58,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737207982] [2020-10-15 03:15:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:58,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:58,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:58,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:58,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:58,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:58,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:00,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:00,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:00,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:00,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:00,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:01,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:01,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:01,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:01,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:01,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:02,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:02,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:03,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:03,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:16:03,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-15 03:16:03,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:16:03,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:03,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:03,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:16:03,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:03,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:16:03,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:03,308 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:03,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:03,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:03,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:03,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:03,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:03,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:16:03,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:03,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:03,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:03,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:03,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:03,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:03,336 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 03:16:03,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737207982] [2020-10-15 03:16:03,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:03,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:16:03,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875488790] [2020-10-15 03:16:03,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:16:03,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:03,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:16:03,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:03,339 INFO L87 Difference]: Start difference. First operand 246 states and 303 transitions. Second operand 8 states. [2020-10-15 03:16:03,518 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:16:05,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:05,250 INFO L93 Difference]: Finished difference Result 908 states and 1223 transitions. [2020-10-15 03:16:05,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:16:05,251 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-15 03:16:05,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:05,260 INFO L225 Difference]: With dead ends: 908 [2020-10-15 03:16:05,261 INFO L226 Difference]: Without dead ends: 820 [2020-10-15 03:16:05,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:16:05,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-10-15 03:16:05,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 278. [2020-10-15 03:16:05,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-15 03:16:05,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 344 transitions. [2020-10-15 03:16:05,292 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 344 transitions. Word has length 52 [2020-10-15 03:16:05,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:05,293 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 344 transitions. [2020-10-15 03:16:05,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:16:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 344 transitions. [2020-10-15 03:16:05,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:16:05,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:05,294 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] [2020-10-15 03:16:05,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:16:05,295 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:05,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:05,295 INFO L82 PathProgramCache]: Analyzing trace with hash 542201006, now seen corresponding path program 1 times [2020-10-15 03:16:05,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:05,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842582365] [2020-10-15 03:16:05,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:05,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:05,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:05,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:05,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:05,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:05,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:08,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:10,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:10,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:16:10,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:16:10,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:16:10,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:10,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:10,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:16:10,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:16:10,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:16:10,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:10,650 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:10,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:10,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:10,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:10,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:10,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:10,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:16:10,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:10,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:16:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:16:10,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:10,698 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 03:16:10,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842582365] [2020-10-15 03:16:10,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:10,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:16:10,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512683922] [2020-10-15 03:16:10,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:16:10,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:10,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:16:10,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:10,701 INFO L87 Difference]: Start difference. First operand 278 states and 344 transitions. Second operand 8 states. [2020-10-15 03:16:10,924 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-15 03:16:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:12,262 INFO L93 Difference]: Finished difference Result 579 states and 765 transitions. [2020-10-15 03:16:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:16:12,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-15 03:16:12,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:12,270 INFO L225 Difference]: With dead ends: 579 [2020-10-15 03:16:12,270 INFO L226 Difference]: Without dead ends: 499 [2020-10-15 03:16:12,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:16:12,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-15 03:16:12,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 282. [2020-10-15 03:16:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-15 03:16:12,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 348 transitions. [2020-10-15 03:16:12,307 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 348 transitions. Word has length 52 [2020-10-15 03:16:12,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:12,307 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 348 transitions. [2020-10-15 03:16:12,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:16:12,308 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 348 transitions. [2020-10-15 03:16:12,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 03:16:12,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:12,331 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] [2020-10-15 03:16:12,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:16:12,332 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:12,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:12,332 INFO L82 PathProgramCache]: Analyzing trace with hash -290464131, now seen corresponding path program 1 times [2020-10-15 03:16:12,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:12,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034585917] [2020-10-15 03:16:12,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:12,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:12,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:12,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:13,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:13,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:13,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:13,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:17,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:17,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 03:16:17,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:16:17,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:16:17,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:17,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:17,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:16:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:16:17,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:17,640 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:17,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:17,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:17,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:17,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:17,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:17,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:16:17,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:17,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:17,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:17,675 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 03:16:17,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034585917] [2020-10-15 03:16:17,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:17,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:17,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515190137] [2020-10-15 03:16:17,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:17,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:17,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:17,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:17,678 INFO L87 Difference]: Start difference. First operand 282 states and 348 transitions. Second operand 9 states. [2020-10-15 03:16:17,912 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-15 03:16:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:19,240 INFO L93 Difference]: Finished difference Result 496 states and 634 transitions. [2020-10-15 03:16:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:16:19,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-15 03:16:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:19,247 INFO L225 Difference]: With dead ends: 496 [2020-10-15 03:16:19,247 INFO L226 Difference]: Without dead ends: 478 [2020-10-15 03:16:19,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:16:19,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-10-15 03:16:19,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 264. [2020-10-15 03:16:19,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-15 03:16:19,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 327 transitions. [2020-10-15 03:16:19,278 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 327 transitions. Word has length 53 [2020-10-15 03:16:19,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:19,279 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 327 transitions. [2020-10-15 03:16:19,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:19,279 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 327 transitions. [2020-10-15 03:16:19,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 03:16:19,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:19,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:16:19,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:16:19,281 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:19,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:19,281 INFO L82 PathProgramCache]: Analyzing trace with hash -859483155, now seen corresponding path program 1 times [2020-10-15 03:16:19,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:19,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996608139] [2020-10-15 03:16:19,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:19,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:19,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:19,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:19,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:19,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:20,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:20,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:20,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:20,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:20,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:22,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:22,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:23,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:24,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:24,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 03:16:24,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 03:16:24,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:16:24,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:24,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:16:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:16:24,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:24,629 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:24,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:24,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:24,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:24,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:24,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:16:24,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:24,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:24,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:24,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:24,664 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 03:16:24,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996608139] [2020-10-15 03:16:24,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:24,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:24,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413927270] [2020-10-15 03:16:24,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:24,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:24,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:24,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:24,670 INFO L87 Difference]: Start difference. First operand 264 states and 327 transitions. Second operand 9 states. [2020-10-15 03:16:24,900 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-15 03:16:26,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:26,208 INFO L93 Difference]: Finished difference Result 499 states and 650 transitions. [2020-10-15 03:16:26,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:16:26,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-15 03:16:26,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:26,213 INFO L225 Difference]: With dead ends: 499 [2020-10-15 03:16:26,213 INFO L226 Difference]: Without dead ends: 445 [2020-10-15 03:16:26,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:16:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-10-15 03:16:26,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 253. [2020-10-15 03:16:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-15 03:16:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 312 transitions. [2020-10-15 03:16:26,241 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 312 transitions. Word has length 53 [2020-10-15 03:16:26,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:26,241 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 312 transitions. [2020-10-15 03:16:26,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 312 transitions. [2020-10-15 03:16:26,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 03:16:26,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:26,243 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] [2020-10-15 03:16:26,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:16:26,244 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:26,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:26,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1526317123, now seen corresponding path program 1 times [2020-10-15 03:16:26,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:26,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47909450] [2020-10-15 03:16:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:26,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:26,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:26,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:26,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:26,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:26,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:27,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:27,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:27,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:31,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 03:16:31,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:16:31,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:16:31,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:31,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:16:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:16:31,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:16:31,528 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:31,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:31,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:31,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:31,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:31,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:16:31,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:31,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:31,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:31,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:31,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:31,554 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 03:16:31,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47909450] [2020-10-15 03:16:31,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:31,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:16:31,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125833879] [2020-10-15 03:16:31,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:16:31,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:31,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:16:31,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:31,557 INFO L87 Difference]: Start difference. First operand 253 states and 312 transitions. Second operand 8 states. [2020-10-15 03:16:31,797 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:16:32,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:32,907 INFO L93 Difference]: Finished difference Result 478 states and 623 transitions. [2020-10-15 03:16:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:16:32,908 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-15 03:16:32,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:32,910 INFO L225 Difference]: With dead ends: 478 [2020-10-15 03:16:32,910 INFO L226 Difference]: Without dead ends: 401 [2020-10-15 03:16:32,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:16:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-15 03:16:32,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 195. [2020-10-15 03:16:32,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-15 03:16:32,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 236 transitions. [2020-10-15 03:16:32,940 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 236 transitions. Word has length 53 [2020-10-15 03:16:32,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:32,940 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 236 transitions. [2020-10-15 03:16:32,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:16:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 236 transitions. [2020-10-15 03:16:32,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 03:16:32,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:32,941 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] [2020-10-15 03:16:32,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:16:32,942 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:32,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:32,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1168116926, now seen corresponding path program 1 times [2020-10-15 03:16:32,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:32,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447801282] [2020-10-15 03:16:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:32,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:32,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:33,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:33,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:33,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:33,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:33,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:34,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:37,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:37,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 03:16:37,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:16:37,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:16:37,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:37,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:16:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:16:37,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:38,228 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:38,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:38,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:38,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:38,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:38,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:38,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:16:38,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:38,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:38,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:38,264 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 03:16:38,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447801282] [2020-10-15 03:16:38,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:38,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:38,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817228943] [2020-10-15 03:16:38,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:38,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:38,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:38,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:38,267 INFO L87 Difference]: Start difference. First operand 195 states and 236 transitions. Second operand 9 states. [2020-10-15 03:16:38,530 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:16:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:39,950 INFO L93 Difference]: Finished difference Result 353 states and 457 transitions. [2020-10-15 03:16:39,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:16:39,951 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-15 03:16:39,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:39,953 INFO L225 Difference]: With dead ends: 353 [2020-10-15 03:16:39,953 INFO L226 Difference]: Without dead ends: 347 [2020-10-15 03:16:39,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:16:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-10-15 03:16:39,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 189. [2020-10-15 03:16:39,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-15 03:16:39,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 230 transitions. [2020-10-15 03:16:39,980 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 230 transitions. Word has length 53 [2020-10-15 03:16:39,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:39,982 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 230 transitions. [2020-10-15 03:16:39,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:39,982 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 230 transitions. [2020-10-15 03:16:39,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:16:39,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:39,984 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] [2020-10-15 03:16:39,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:16:39,984 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:39,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:39,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1072988372, now seen corresponding path program 1 times [2020-10-15 03:16:39,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:39,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233344412] [2020-10-15 03:16:39,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:40,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:40,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:40,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:40,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:45,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:45,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:16:45,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:16:45,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:16:45,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:45,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:16:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:16:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 03:16:45,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:45,204 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:45,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:45,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:45,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:45,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:45,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:45,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:16:45,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:45,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:45,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:16:45,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:45,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:16:45,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:45,237 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 03:16:45,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233344412] [2020-10-15 03:16:45,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:45,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:16:45,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422842080] [2020-10-15 03:16:45,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:16:45,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:45,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:16:45,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:16:45,239 INFO L87 Difference]: Start difference. First operand 189 states and 230 transitions. Second operand 6 states. [2020-10-15 03:16:45,453 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:16:46,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:46,048 INFO L93 Difference]: Finished difference Result 317 states and 406 transitions. [2020-10-15 03:16:46,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:16:46,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-15 03:16:46,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:46,050 INFO L225 Difference]: With dead ends: 317 [2020-10-15 03:16:46,050 INFO L226 Difference]: Without dead ends: 210 [2020-10-15 03:16:46,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:46,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-15 03:16:46,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2020-10-15 03:16:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-15 03:16:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 267 transitions. [2020-10-15 03:16:46,089 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 267 transitions. Word has length 70 [2020-10-15 03:16:46,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:46,089 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 267 transitions. [2020-10-15 03:16:46,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:16:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 267 transitions. [2020-10-15 03:16:46,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:16:46,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:46,090 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] [2020-10-15 03:16:46,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:16:46,091 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:46,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:46,091 INFO L82 PathProgramCache]: Analyzing trace with hash 759181389, now seen corresponding path program 1 times [2020-10-15 03:16:46,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:46,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728321184] [2020-10-15 03:16:46,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:46,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:47,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:51,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:51,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:16:51,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:16:51,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:16:51,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:51,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:51,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:16:51,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:51,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 03:16:51,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:51,332 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:51,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:51,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:51,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:51,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:51,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:16:51,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:51,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:51,354 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 03:16:51,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728321184] [2020-10-15 03:16:51,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:51,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:16:51,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221511286] [2020-10-15 03:16:51,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:16:51,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:51,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:16:51,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:51,357 INFO L87 Difference]: Start difference. First operand 208 states and 267 transitions. Second operand 8 states. [2020-10-15 03:16:51,600 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:16:52,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:52,366 INFO L93 Difference]: Finished difference Result 362 states and 484 transitions. [2020-10-15 03:16:52,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:16:52,367 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-15 03:16:52,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:52,368 INFO L225 Difference]: With dead ends: 362 [2020-10-15 03:16:52,369 INFO L226 Difference]: Without dead ends: 250 [2020-10-15 03:16:52,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:16:52,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-15 03:16:52,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 208. [2020-10-15 03:16:52,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-15 03:16:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 263 transitions. [2020-10-15 03:16:52,410 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 263 transitions. Word has length 71 [2020-10-15 03:16:52,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:52,410 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 263 transitions. [2020-10-15 03:16:52,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:16:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 263 transitions. [2020-10-15 03:16:52,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:16:52,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:52,412 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] [2020-10-15 03:16:52,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:16:52,412 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:52,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:52,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1273591180, now seen corresponding path program 1 times [2020-10-15 03:16:52,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:52,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226638588] [2020-10-15 03:16:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:52,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:52,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:52,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:52,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:52,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:57,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:57,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:16:57,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:16:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:16:57,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:57,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:57,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:16:57,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:16:57,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:16:57,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:57,634 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:57,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:57,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:57,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:57,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:57,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:57,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:16:57,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:57,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:57,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:57,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:57,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:57,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:57,656 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 03:16:57,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226638588] [2020-10-15 03:16:57,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:57,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:16:57,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837711089] [2020-10-15 03:16:57,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:16:57,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:57,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:16:57,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:16:57,658 INFO L87 Difference]: Start difference. First operand 208 states and 263 transitions. Second operand 6 states. [2020-10-15 03:16:57,862 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:16:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:58,505 INFO L93 Difference]: Finished difference Result 700 states and 995 transitions. [2020-10-15 03:16:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:16:58,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-15 03:16:58,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:58,510 INFO L225 Difference]: With dead ends: 700 [2020-10-15 03:16:58,510 INFO L226 Difference]: Without dead ends: 618 [2020-10-15 03:16:58,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:16:58,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-15 03:16:58,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 288. [2020-10-15 03:16:58,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-15 03:16:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 380 transitions. [2020-10-15 03:16:58,573 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 380 transitions. Word has length 73 [2020-10-15 03:16:58,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:58,573 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 380 transitions. [2020-10-15 03:16:58,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:16:58,574 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 380 transitions. [2020-10-15 03:16:58,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:16:58,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:58,574 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] [2020-10-15 03:16:58,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:16:58,575 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:58,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:58,575 INFO L82 PathProgramCache]: Analyzing trace with hash 280570259, now seen corresponding path program 1 times [2020-10-15 03:16:58,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:58,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824856263] [2020-10-15 03:16:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:58,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:58,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:58,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:58,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:58,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:59,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:59,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:59,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:59,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:59,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:59,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:59,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:59,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:00,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:00,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:03,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:03,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:17:03,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:17:03,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:17:03,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:03,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:17:03,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:17:03,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:17:03,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:03,794 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:17:03,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:03,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:03,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:03,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:03,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:03,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:17:03,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:03,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:03,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:03,818 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 03:17:03,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824856263] [2020-10-15 03:17:03,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:03,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:17:03,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326709919] [2020-10-15 03:17:03,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:17:03,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:03,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:17:03,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:03,820 INFO L87 Difference]: Start difference. First operand 288 states and 380 transitions. Second operand 8 states. [2020-10-15 03:17:04,014 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:17:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:04,964 INFO L93 Difference]: Finished difference Result 973 states and 1367 transitions. [2020-10-15 03:17:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 03:17:04,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-10-15 03:17:04,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:04,969 INFO L225 Difference]: With dead ends: 973 [2020-10-15 03:17:04,970 INFO L226 Difference]: Without dead ends: 811 [2020-10-15 03:17:04,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-15 03:17:04,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-10-15 03:17:05,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 352. [2020-10-15 03:17:05,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-15 03:17:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 476 transitions. [2020-10-15 03:17:05,044 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 476 transitions. Word has length 75 [2020-10-15 03:17:05,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:05,044 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 476 transitions. [2020-10-15 03:17:05,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:17:05,044 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 476 transitions. [2020-10-15 03:17:05,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:17:05,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:05,045 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] [2020-10-15 03:17:05,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:17:05,046 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:05,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:05,046 INFO L82 PathProgramCache]: Analyzing trace with hash -999097843, now seen corresponding path program 1 times [2020-10-15 03:17:05,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:05,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107178682] [2020-10-15 03:17:05,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:05,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:05,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:05,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:05,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:05,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:05,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:05,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:10,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:10,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:17:10,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:17:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:17:10,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:10,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:17:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:17:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:17:10,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:10,397 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:17:10,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:10,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:10,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:10,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:10,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:10,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:17:10,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:10,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:10,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:10,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:10,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:17:10,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:10,436 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 03:17:10,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107178682] [2020-10-15 03:17:10,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:10,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:17:10,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67143800] [2020-10-15 03:17:10,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:17:10,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:10,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:17:10,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:10,438 INFO L87 Difference]: Start difference. First operand 352 states and 476 transitions. Second operand 8 states. [2020-10-15 03:17:10,646 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:17:11,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:11,773 INFO L93 Difference]: Finished difference Result 1352 states and 1936 transitions. [2020-10-15 03:17:11,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:17:11,774 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-10-15 03:17:11,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:11,779 INFO L225 Difference]: With dead ends: 1352 [2020-10-15 03:17:11,779 INFO L226 Difference]: Without dead ends: 1126 [2020-10-15 03:17:11,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:17:11,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2020-10-15 03:17:11,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 600. [2020-10-15 03:17:11,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-10-15 03:17:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 842 transitions. [2020-10-15 03:17:11,941 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 842 transitions. Word has length 75 [2020-10-15 03:17:11,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:11,941 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 842 transitions. [2020-10-15 03:17:11,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:17:11,941 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 842 transitions. [2020-10-15 03:17:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:17:11,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:11,943 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] [2020-10-15 03:17:11,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:17:11,943 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:11,944 INFO L82 PathProgramCache]: Analyzing trace with hash -289176458, now seen corresponding path program 1 times [2020-10-15 03:17:11,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:11,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000462403] [2020-10-15 03:17:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:11,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:12,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:12,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:12,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:12,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:12,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:14,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:14,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:14,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:16,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:16,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:17:16,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:17:16,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:17:16,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:16,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:16,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:17:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:17:16,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:17,188 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:17:17,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:17,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:17,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:17,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:17,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:17,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:17:17,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:17,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:17,226 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 03:17:17,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000462403] [2020-10-15 03:17:17,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:17,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:17:17,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368577675] [2020-10-15 03:17:17,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:17,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:17,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:17,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:17,231 INFO L87 Difference]: Start difference. First operand 600 states and 842 transitions. Second operand 6 states. [2020-10-15 03:17:17,512 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-15 03:17:18,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:18,480 INFO L93 Difference]: Finished difference Result 2028 states and 2948 transitions. [2020-10-15 03:17:18,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:17:18,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-15 03:17:18,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:18,487 INFO L225 Difference]: With dead ends: 2028 [2020-10-15 03:17:18,487 INFO L226 Difference]: Without dead ends: 1554 [2020-10-15 03:17:18,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:17:18,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2020-10-15 03:17:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 600. [2020-10-15 03:17:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-10-15 03:17:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 834 transitions. [2020-10-15 03:17:18,671 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 834 transitions. Word has length 75 [2020-10-15 03:17:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:18,671 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 834 transitions. [2020-10-15 03:17:18,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 834 transitions. [2020-10-15 03:17:18,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:17:18,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:18,673 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] [2020-10-15 03:17:18,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:17:18,673 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:18,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:18,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1028916779, now seen corresponding path program 1 times [2020-10-15 03:17:18,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:18,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071048723] [2020-10-15 03:17:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:18,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:18,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:19,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:19,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:23,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:23,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:17:23,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:17:23,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:17:23,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:23,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:23,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:23,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:17:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 03:17:23,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:23,942 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:17:23,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:23,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:23,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:23,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:23,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:23,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:17:23,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:23,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:23,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:23,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:23,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:23,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:23,966 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 03:17:23,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071048723] [2020-10-15 03:17:23,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:23,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:17:23,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740826959] [2020-10-15 03:17:23,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:23,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:23,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:23,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:23,969 INFO L87 Difference]: Start difference. First operand 600 states and 834 transitions. Second operand 6 states. [2020-10-15 03:17:24,154 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:17:25,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:25,082 INFO L93 Difference]: Finished difference Result 1686 states and 2398 transitions. [2020-10-15 03:17:25,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:17:25,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-15 03:17:25,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:25,088 INFO L225 Difference]: With dead ends: 1686 [2020-10-15 03:17:25,088 INFO L226 Difference]: Without dead ends: 1212 [2020-10-15 03:17:25,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:25,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-10-15 03:17:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1208. [2020-10-15 03:17:25,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2020-10-15 03:17:25,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1667 transitions. [2020-10-15 03:17:25,439 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1667 transitions. Word has length 75 [2020-10-15 03:17:25,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:25,440 INFO L479 AbstractCegarLoop]: Abstraction has 1208 states and 1667 transitions. [2020-10-15 03:17:25,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1667 transitions. [2020-10-15 03:17:25,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:17:25,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:25,441 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] [2020-10-15 03:17:25,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:17:25,441 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:25,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:25,442 INFO L82 PathProgramCache]: Analyzing trace with hash -267832569, now seen corresponding path program 1 times [2020-10-15 03:17:25,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:25,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821246016] [2020-10-15 03:17:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:25,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:25,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:25,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:25,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:25,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:25,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:29,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:29,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:29,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:30,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:30,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:17:30,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:17:30,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:17:30,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:30,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 03:17:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:17:30,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:30,668 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:17:30,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:30,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:30,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:30,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:30,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:17:30,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:30,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:30,690 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 03:17:30,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821246016] [2020-10-15 03:17:30,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:30,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:17:30,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938402738] [2020-10-15 03:17:30,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:30,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:30,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:30,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:30,694 INFO L87 Difference]: Start difference. First operand 1208 states and 1667 transitions. Second operand 6 states. [2020-10-15 03:17:30,879 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-15 03:17:33,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:33,968 INFO L93 Difference]: Finished difference Result 8022 states and 11142 transitions. [2020-10-15 03:17:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:17:33,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-15 03:17:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:33,996 INFO L225 Difference]: With dead ends: 8022 [2020-10-15 03:17:33,996 INFO L226 Difference]: Without dead ends: 6972 [2020-10-15 03:17:34,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:17:34,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6972 states. [2020-10-15 03:17:35,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6972 to 4486. [2020-10-15 03:17:35,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4486 states. [2020-10-15 03:17:35,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 6232 transitions. [2020-10-15 03:17:35,544 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 6232 transitions. Word has length 75 [2020-10-15 03:17:35,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:35,545 INFO L479 AbstractCegarLoop]: Abstraction has 4486 states and 6232 transitions. [2020-10-15 03:17:35,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:35,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 6232 transitions. [2020-10-15 03:17:35,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:17:35,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:35,548 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] [2020-10-15 03:17:35,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:17:35,548 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:35,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:35,548 INFO L82 PathProgramCache]: Analyzing trace with hash -433703214, now seen corresponding path program 1 times [2020-10-15 03:17:35,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:35,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30809715] [2020-10-15 03:17:35,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:35,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:35,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:35,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:35,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:36,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:38,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:40,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:40,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:17:40,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:17:40,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:17:40,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:40,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:17:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 03:17:40,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:40,800 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:17:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:40,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:40,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:40,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:40,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:40,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:17:40,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:40,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:17:40,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:40,834 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 03:17:40,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30809715] [2020-10-15 03:17:40,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:40,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:17:40,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047502773] [2020-10-15 03:17:40,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:40,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:40,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:40,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:40,838 INFO L87 Difference]: Start difference. First operand 4486 states and 6232 transitions. Second operand 6 states. [2020-10-15 03:17:41,047 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:17:42,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:42,430 INFO L93 Difference]: Finished difference Result 6546 states and 9158 transitions. [2020-10-15 03:17:42,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:17:42,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-15 03:17:42,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:42,445 INFO L225 Difference]: With dead ends: 6546 [2020-10-15 03:17:42,445 INFO L226 Difference]: Without dead ends: 3282 [2020-10-15 03:17:42,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:42,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2020-10-15 03:17:43,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 2252. [2020-10-15 03:17:43,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2252 states. [2020-10-15 03:17:43,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3134 transitions. [2020-10-15 03:17:43,251 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3134 transitions. Word has length 76 [2020-10-15 03:17:43,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:43,251 INFO L479 AbstractCegarLoop]: Abstraction has 2252 states and 3134 transitions. [2020-10-15 03:17:43,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:43,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3134 transitions. [2020-10-15 03:17:43,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:17:43,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:43,253 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] [2020-10-15 03:17:43,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:17:43,253 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:43,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:43,254 INFO L82 PathProgramCache]: Analyzing trace with hash -643846490, now seen corresponding path program 1 times [2020-10-15 03:17:43,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:43,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394260460] [2020-10-15 03:17:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:43,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:43,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:43,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:43,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:44,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:44,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:44,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:47,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:47,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:48,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:48,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:17:48,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:17:48,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:17:48,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:48,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:17:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:17:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 03:17:48,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:48,585 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:17:48,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:48,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:48,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:48,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:48,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:48,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:17:48,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:48,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:17:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:48,622 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 03:17:48,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394260460] [2020-10-15 03:17:48,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:48,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:17:48,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594671180] [2020-10-15 03:17:48,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:17:48,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:48,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:17:48,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:48,623 INFO L87 Difference]: Start difference. First operand 2252 states and 3134 transitions. Second operand 8 states. [2020-10-15 03:17:48,810 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:17:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:52,050 INFO L93 Difference]: Finished difference Result 9484 states and 13146 transitions. [2020-10-15 03:17:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:17:52,052 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-15 03:17:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:52,082 INFO L225 Difference]: With dead ends: 9484 [2020-10-15 03:17:52,082 INFO L226 Difference]: Without dead ends: 7426 [2020-10-15 03:17:52,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:17:52,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7426 states. [2020-10-15 03:17:53,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7426 to 4548. [2020-10-15 03:17:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4548 states. [2020-10-15 03:17:53,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4548 states to 4548 states and 6358 transitions. [2020-10-15 03:17:53,612 INFO L78 Accepts]: Start accepts. Automaton has 4548 states and 6358 transitions. Word has length 76 [2020-10-15 03:17:53,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:53,612 INFO L479 AbstractCegarLoop]: Abstraction has 4548 states and 6358 transitions. [2020-10-15 03:17:53,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:17:53,612 INFO L276 IsEmpty]: Start isEmpty. Operand 4548 states and 6358 transitions. [2020-10-15 03:17:53,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 03:17:53,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:53,614 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] [2020-10-15 03:17:53,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:17:53,614 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:53,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:53,614 INFO L82 PathProgramCache]: Analyzing trace with hash 794767123, now seen corresponding path program 1 times [2020-10-15 03:17:53,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:53,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84623851] [2020-10-15 03:17:53,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:53,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:53,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:53,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:53,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:57,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:58,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:58,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 03:17:58,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:17:58,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:17:58,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:58,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:17:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:17:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 03:17:58,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:58,933 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:17:58,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:58,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:58,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:58,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:58,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:58,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:17:58,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:58,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:58,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:58,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:58,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:58,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:58,959 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 03:17:58,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84623851] [2020-10-15 03:17:58,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:58,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:17:58,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87178386] [2020-10-15 03:17:58,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:17:58,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:58,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:17:58,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:17:58,961 INFO L87 Difference]: Start difference. First operand 4548 states and 6358 transitions. Second operand 7 states. [2020-10-15 03:17:59,235 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-15 03:18:02,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:02,043 INFO L93 Difference]: Finished difference Result 10722 states and 15010 transitions. [2020-10-15 03:18:02,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:18:02,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-15 03:18:02,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:02,072 INFO L225 Difference]: With dead ends: 10722 [2020-10-15 03:18:02,072 INFO L226 Difference]: Without dead ends: 6726 [2020-10-15 03:18:02,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:18:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states. [2020-10-15 03:18:03,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 4548. [2020-10-15 03:18:03,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4548 states. [2020-10-15 03:18:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4548 states to 4548 states and 6356 transitions. [2020-10-15 03:18:03,625 INFO L78 Accepts]: Start accepts. Automaton has 4548 states and 6356 transitions. Word has length 77 [2020-10-15 03:18:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:03,625 INFO L479 AbstractCegarLoop]: Abstraction has 4548 states and 6356 transitions. [2020-10-15 03:18:03,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:18:03,625 INFO L276 IsEmpty]: Start isEmpty. Operand 4548 states and 6356 transitions. [2020-10-15 03:18:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 03:18:03,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:03,627 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] [2020-10-15 03:18:03,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 03:18:03,628 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:03,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:03,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1752026006, now seen corresponding path program 1 times [2020-10-15 03:18:03,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:03,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149277741] [2020-10-15 03:18:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:03,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:03,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:03,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:03,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:04,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:06,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:06,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 03:18:06,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:18:06,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2481 [2020-10-15 03:18:06,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:06,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:18:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:18:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:18:06,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:06,437 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:18:06,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:06,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:06,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:06,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:06,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:18:06,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:06,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:18:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:06,467 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 03:18:06,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149277741] [2020-10-15 03:18:06,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:06,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:18:06,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550757771] [2020-10-15 03:18:06,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:18:06,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:06,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:18:06,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:18:06,469 INFO L87 Difference]: Start difference. First operand 4548 states and 6356 transitions. Second operand 6 states. [2020-10-15 03:18:06,684 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:18:08,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:08,530 INFO L93 Difference]: Finished difference Result 8866 states and 12460 transitions. [2020-10-15 03:18:08,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:18:08,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-15 03:18:08,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:08,543 INFO L225 Difference]: With dead ends: 8866 [2020-10-15 03:18:08,543 INFO L226 Difference]: Without dead ends: 4434 [2020-10-15 03:18:08,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:18:08,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4434 states. [2020-10-15 03:18:09,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4434 to 4434. [2020-10-15 03:18:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4434 states. [2020-10-15 03:18:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6158 transitions. [2020-10-15 03:18:10,002 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6158 transitions. Word has length 79 [2020-10-15 03:18:10,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:10,003 INFO L479 AbstractCegarLoop]: Abstraction has 4434 states and 6158 transitions. [2020-10-15 03:18:10,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:18:10,003 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6158 transitions. [2020-10-15 03:18:10,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 03:18:10,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:10,004 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] [2020-10-15 03:18:10,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 03:18:10,005 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:10,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:10,005 INFO L82 PathProgramCache]: Analyzing trace with hash 104322071, now seen corresponding path program 1 times [2020-10-15 03:18:10,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:10,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158238722] [2020-10-15 03:18:10,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:10,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:10,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:10,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:10,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:11,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:12,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:15,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:15,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 03:18:15,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:18:15,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:18:15,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:15,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:18:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:18:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:18:15,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:15,378 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:18:15,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:15,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:15,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:15,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:15,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:15,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:18:15,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:15,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:15,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:15,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:15,409 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 03:18:15,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158238722] [2020-10-15 03:18:15,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:15,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:18:15,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115911515] [2020-10-15 03:18:15,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:18:15,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:15,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:18:15,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:18:15,411 INFO L87 Difference]: Start difference. First operand 4434 states and 6158 transitions. Second operand 8 states. [2020-10-15 03:18:15,663 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:18:19,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:19,353 INFO L93 Difference]: Finished difference Result 13130 states and 18281 transitions. [2020-10-15 03:18:19,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:18:19,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-15 03:18:19,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:19,371 INFO L225 Difference]: With dead ends: 13130 [2020-10-15 03:18:19,371 INFO L226 Difference]: Without dead ends: 8812 [2020-10-15 03:18:19,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:18:19,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8812 states. [2020-10-15 03:18:20,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8812 to 4434. [2020-10-15 03:18:20,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4434 states. [2020-10-15 03:18:20,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6156 transitions. [2020-10-15 03:18:20,953 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6156 transitions. Word has length 80 [2020-10-15 03:18:20,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:20,953 INFO L479 AbstractCegarLoop]: Abstraction has 4434 states and 6156 transitions. [2020-10-15 03:18:20,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:18:20,954 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6156 transitions. [2020-10-15 03:18:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 03:18:20,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:20,963 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] [2020-10-15 03:18:20,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 03:18:20,963 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:20,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:20,963 INFO L82 PathProgramCache]: Analyzing trace with hash -477539802, now seen corresponding path program 1 times [2020-10-15 03:18:20,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:20,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526504571] [2020-10-15 03:18:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:21,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:21,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:21,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:22,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:24,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:25,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:25,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 03:18:25,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:18:25,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:18:25,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:25,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 03:18:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:18:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:18:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:26,829 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:18:26,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:26,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:26,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:26,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:26,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:26,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:18:26,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:26,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:26,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:26,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:26,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:26,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:26,877 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 03:18:26,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526504571] [2020-10-15 03:18:26,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:26,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 03:18:26,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806339650] [2020-10-15 03:18:26,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 03:18:26,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:26,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 03:18:26,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:18:26,879 INFO L87 Difference]: Start difference. First operand 4434 states and 6156 transitions. Second operand 15 states. [2020-10-15 03:18:27,009 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-15 03:18:27,618 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2020-10-15 03:18:36,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:36,452 INFO L93 Difference]: Finished difference Result 24868 states and 34618 transitions. [2020-10-15 03:18:36,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 03:18:36,453 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2020-10-15 03:18:36,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:36,483 INFO L225 Difference]: With dead ends: 24868 [2020-10-15 03:18:36,483 INFO L226 Difference]: Without dead ends: 20566 [2020-10-15 03:18:36,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:18:36,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20566 states. [2020-10-15 03:18:38,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20566 to 4439. [2020-10-15 03:18:38,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4439 states. [2020-10-15 03:18:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4439 states to 4439 states and 6161 transitions. [2020-10-15 03:18:38,371 INFO L78 Accepts]: Start accepts. Automaton has 4439 states and 6161 transitions. Word has length 82 [2020-10-15 03:18:38,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:38,371 INFO L479 AbstractCegarLoop]: Abstraction has 4439 states and 6161 transitions. [2020-10-15 03:18:38,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 03:18:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4439 states and 6161 transitions. [2020-10-15 03:18:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 03:18:38,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:38,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:18:38,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 03:18:38,373 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:38,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:38,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1829265455, now seen corresponding path program 1 times [2020-10-15 03:18:38,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:38,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124271514] [2020-10-15 03:18:38,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:38,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:38,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:38,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:38,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:39,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:39,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 03:18:39,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:18:39,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-15 03:18:39,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:39,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-15 03:18:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 03:18:39,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:39,495 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:18:39,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:39,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:39,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:39,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:39,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:39,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:18:39,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:39,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:39,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:39,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:39,531 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 03:18:39,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124271514] [2020-10-15 03:18:39,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:39,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:18:39,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565684660] [2020-10-15 03:18:39,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:18:39,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:39,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:18:39,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:18:39,535 INFO L87 Difference]: Start difference. First operand 4439 states and 6161 transitions. Second operand 4 states. [2020-10-15 03:18:39,834 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:18:41,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:41,639 INFO L93 Difference]: Finished difference Result 8411 states and 11667 transitions. [2020-10-15 03:18:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:18:41,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-10-15 03:18:41,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:41,646 INFO L225 Difference]: With dead ends: 8411 [2020-10-15 03:18:41,646 INFO L226 Difference]: Without dead ends: 4129 [2020-10-15 03:18:41,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:18:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4129 states. [2020-10-15 03:18:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4129 to 3327. [2020-10-15 03:18:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3327 states. [2020-10-15 03:18:42,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 4507 transitions. [2020-10-15 03:18:42,857 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 4507 transitions. Word has length 83 [2020-10-15 03:18:42,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:42,858 INFO L479 AbstractCegarLoop]: Abstraction has 3327 states and 4507 transitions. [2020-10-15 03:18:42,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:18:42,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 4507 transitions. [2020-10-15 03:18:42,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:18:42,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:42,864 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] [2020-10-15 03:18:42,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 03:18:42,864 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:42,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:42,865 INFO L82 PathProgramCache]: Analyzing trace with hash -607711718, now seen corresponding path program 1 times [2020-10-15 03:18:42,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:42,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010408872] [2020-10-15 03:18:42,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:42,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:42,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:43,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:43,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:43,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:18:43,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:18:43,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-15 03:18:43,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:43,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:43,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:43,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-15 03:18:43,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 03:18:43,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:43,663 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:18:43,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:43,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:43,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:43,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:43,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:43,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:18:43,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:43,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:43,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:43,702 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 03:18:43,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010408872] [2020-10-15 03:18:43,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:43,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:18:43,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558900833] [2020-10-15 03:18:43,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:18:43,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:43,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:18:43,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:18:43,705 INFO L87 Difference]: Start difference. First operand 3327 states and 4507 transitions. Second operand 4 states. [2020-10-15 03:18:43,956 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:18:45,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:45,952 INFO L93 Difference]: Finished difference Result 7747 states and 10405 transitions. [2020-10-15 03:18:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:18:45,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-15 03:18:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:45,958 INFO L225 Difference]: With dead ends: 7747 [2020-10-15 03:18:45,958 INFO L226 Difference]: Without dead ends: 4521 [2020-10-15 03:18:45,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:18:45,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2020-10-15 03:18:47,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4127. [2020-10-15 03:18:47,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4127 states. [2020-10-15 03:18:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4127 states to 4127 states and 5475 transitions. [2020-10-15 03:18:47,544 INFO L78 Accepts]: Start accepts. Automaton has 4127 states and 5475 transitions. Word has length 84 [2020-10-15 03:18:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:47,545 INFO L479 AbstractCegarLoop]: Abstraction has 4127 states and 5475 transitions. [2020-10-15 03:18:47,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:18:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4127 states and 5475 transitions. [2020-10-15 03:18:47,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:18:47,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:47,546 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] [2020-10-15 03:18:47,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 03:18:47,546 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:47,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:47,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1983906373, now seen corresponding path program 1 times [2020-10-15 03:18:47,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:47,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221559444] [2020-10-15 03:18:47,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:47,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:47,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:47,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:47,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:47,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:47,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:49,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:52,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:52,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:18:52,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:18:52,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:18:52,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:52,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:52,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:18:52,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:18:52,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 03:18:52,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:52,764 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:18:52,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:52,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:52,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:52,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:52,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:52,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:18:52,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:52,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:18:52,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:52,801 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 03:18:52,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221559444] [2020-10-15 03:18:52,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:52,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:18:52,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262670788] [2020-10-15 03:18:52,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:18:52,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:52,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:18:52,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:18:52,803 INFO L87 Difference]: Start difference. First operand 4127 states and 5475 transitions. Second operand 6 states. [2020-10-15 03:18:53,027 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-15 03:18:55,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:55,171 INFO L93 Difference]: Finished difference Result 9053 states and 11987 transitions. [2020-10-15 03:18:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:18:55,172 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-15 03:18:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:55,179 INFO L225 Difference]: With dead ends: 9053 [2020-10-15 03:18:55,179 INFO L226 Difference]: Without dead ends: 5027 [2020-10-15 03:18:55,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:18:55,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2020-10-15 03:18:56,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 2101. [2020-10-15 03:18:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2020-10-15 03:18:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 2761 transitions. [2020-10-15 03:18:56,014 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 2761 transitions. Word has length 85 [2020-10-15 03:18:56,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:56,014 INFO L479 AbstractCegarLoop]: Abstraction has 2101 states and 2761 transitions. [2020-10-15 03:18:56,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:18:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 2761 transitions. [2020-10-15 03:18:56,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:18:56,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:56,015 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] [2020-10-15 03:18:56,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 03:18:56,015 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:56,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1212042720, now seen corresponding path program 1 times [2020-10-15 03:18:56,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:56,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966151679] [2020-10-15 03:18:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:56,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:56,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:56,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:56,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:18:56,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:18:56,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-15 03:18:56,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:56,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 03:18:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 03:18:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:56,500 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:18:56,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:56,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:56,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:56,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:56,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:56,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:18:56,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:56,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:56,523 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 03:18:56,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966151679] [2020-10-15 03:18:56,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:56,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:18:56,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260822999] [2020-10-15 03:18:56,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:18:56,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:56,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:18:56,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:18:56,525 INFO L87 Difference]: Start difference. First operand 2101 states and 2761 transitions. Second operand 4 states. [2020-10-15 03:18:56,727 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:18:58,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:58,064 INFO L93 Difference]: Finished difference Result 3859 states and 5108 transitions. [2020-10-15 03:18:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:18:58,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-10-15 03:18:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:58,068 INFO L225 Difference]: With dead ends: 3859 [2020-10-15 03:18:58,069 INFO L226 Difference]: Without dead ends: 2455 [2020-10-15 03:18:58,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:18:58,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2020-10-15 03:18:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2399. [2020-10-15 03:18:59,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2399 states. [2020-10-15 03:18:59,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3143 transitions. [2020-10-15 03:18:59,022 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3143 transitions. Word has length 85 [2020-10-15 03:18:59,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:59,022 INFO L479 AbstractCegarLoop]: Abstraction has 2399 states and 3143 transitions. [2020-10-15 03:18:59,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:18:59,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3143 transitions. [2020-10-15 03:18:59,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:18:59,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:59,023 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] [2020-10-15 03:18:59,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 03:18:59,023 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:59,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:59,024 INFO L82 PathProgramCache]: Analyzing trace with hash -138514938, now seen corresponding path program 1 times [2020-10-15 03:18:59,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:59,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781225337] [2020-10-15 03:18:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:59,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:59,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:18:59,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:59,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-15 03:18:59,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:59,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:18:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-15 03:18:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 03:18:59,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:59,401 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:18:59,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:59,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:59,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:59,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:59,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:59,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:18:59,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:59,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:59,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:59,425 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 03:18:59,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781225337] [2020-10-15 03:18:59,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:59,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:18:59,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055415996] [2020-10-15 03:18:59,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:18:59,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:59,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:18:59,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:18:59,428 INFO L87 Difference]: Start difference. First operand 2399 states and 3143 transitions. Second operand 6 states. [2020-10-15 03:19:01,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:01,537 INFO L93 Difference]: Finished difference Result 3783 states and 4929 transitions. [2020-10-15 03:19:01,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:19:01,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-15 03:19:01,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:01,542 INFO L225 Difference]: With dead ends: 3783 [2020-10-15 03:19:01,543 INFO L226 Difference]: Without dead ends: 3781 [2020-10-15 03:19:01,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:01,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3781 states. [2020-10-15 03:19:02,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3781 to 2495. [2020-10-15 03:19:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2495 states. [2020-10-15 03:19:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 3215 transitions. [2020-10-15 03:19:02,585 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 3215 transitions. Word has length 86 [2020-10-15 03:19:02,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:02,586 INFO L479 AbstractCegarLoop]: Abstraction has 2495 states and 3215 transitions. [2020-10-15 03:19:02,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:19:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 3215 transitions. [2020-10-15 03:19:02,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 03:19:02,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:02,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:19:02,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 03:19:02,590 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:02,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:02,590 INFO L82 PathProgramCache]: Analyzing trace with hash 802669457, now seen corresponding path program 1 times [2020-10-15 03:19:02,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:02,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044436210] [2020-10-15 03:19:02,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:02,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:02,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:02,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:02,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:02,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:03,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:03,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:03,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:07,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:07,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 03:19:07,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:19:07,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:19:07,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:07,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:19:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:19:07,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-15 03:19:07,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:07,858 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:19:07,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:07,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:07,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:07,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:07,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:07,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:19:07,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:07,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:07,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044436210] [2020-10-15 03:19:07,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:19:07,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 03:19:07,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664466733] [2020-10-15 03:19:07,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:19:07,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:07,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:19:07,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:19:07,890 INFO L87 Difference]: Start difference. First operand 2495 states and 3215 transitions. Second operand 6 states. [2020-10-15 03:19:08,092 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:19:10,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:10,501 INFO L93 Difference]: Finished difference Result 6863 states and 8930 transitions. [2020-10-15 03:19:10,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:19:10,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-10-15 03:19:10,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:10,506 INFO L225 Difference]: With dead ends: 6863 [2020-10-15 03:19:10,506 INFO L226 Difference]: Without dead ends: 4461 [2020-10-15 03:19:10,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:10,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2020-10-15 03:19:12,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 4457. [2020-10-15 03:19:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4457 states. [2020-10-15 03:19:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4457 states to 4457 states and 5739 transitions. [2020-10-15 03:19:12,350 INFO L78 Accepts]: Start accepts. Automaton has 4457 states and 5739 transitions. Word has length 107 [2020-10-15 03:19:12,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:12,351 INFO L479 AbstractCegarLoop]: Abstraction has 4457 states and 5739 transitions. [2020-10-15 03:19:12,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:19:12,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4457 states and 5739 transitions. [2020-10-15 03:19:12,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 03:19:12,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:12,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:19:12,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 03:19:12,353 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:12,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:12,353 INFO L82 PathProgramCache]: Analyzing trace with hash -476998645, now seen corresponding path program 1 times [2020-10-15 03:19:12,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:12,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864179062] [2020-10-15 03:19:12,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:12,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:12,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:12,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:12,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:12,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:12,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:12,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:12,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:13,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:13,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:14,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:14,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:15,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:16,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:17,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:17,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 03:19:17,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:19:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:19:17,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:17,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:17,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:19:17,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:19:17,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 03:19:17,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:17,578 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:19:17,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:17,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:17,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:17,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:17,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:19:17,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:17,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:17,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-15 03:19:17,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864179062] [2020-10-15 03:19:17,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:19:17,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 03:19:17,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187160648] [2020-10-15 03:19:17,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:19:17,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:17,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:19:17,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:19:17,608 INFO L87 Difference]: Start difference. First operand 4457 states and 5739 transitions. Second operand 6 states. [2020-10-15 03:19:17,819 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:19:21,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:21,267 INFO L93 Difference]: Finished difference Result 11093 states and 14328 transitions. [2020-10-15 03:19:21,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:19:21,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-10-15 03:19:21,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:21,277 INFO L225 Difference]: With dead ends: 11093 [2020-10-15 03:19:21,277 INFO L226 Difference]: Without dead ends: 6729 [2020-10-15 03:19:21,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:21,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6729 states. [2020-10-15 03:19:24,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6729 to 6465. [2020-10-15 03:19:24,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6465 states. [2020-10-15 03:19:24,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6465 states to 6465 states and 8339 transitions. [2020-10-15 03:19:24,035 INFO L78 Accepts]: Start accepts. Automaton has 6465 states and 8339 transitions. Word has length 107 [2020-10-15 03:19:24,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:24,036 INFO L479 AbstractCegarLoop]: Abstraction has 6465 states and 8339 transitions. [2020-10-15 03:19:24,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:19:24,036 INFO L276 IsEmpty]: Start isEmpty. Operand 6465 states and 8339 transitions. [2020-10-15 03:19:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 03:19:24,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:24,038 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:19:24,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 03:19:24,038 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:24,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:24,039 INFO L82 PathProgramCache]: Analyzing trace with hash 254266629, now seen corresponding path program 1 times [2020-10-15 03:19:24,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:24,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383243701] [2020-10-15 03:19:24,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:24,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:24,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:24,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:24,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:24,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:24,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:25,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:25,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:25,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking...