/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:01:01,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:01:01,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:01:01,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:01:01,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:01:01,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:01:01,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:01:01,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:01:01,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:01:01,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:01:01,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:01:01,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:01:01,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:01:01,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:01:01,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:01:01,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:01:01,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:01:01,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:01:01,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:01:01,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:01:01,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:01:01,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:01:01,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:01:01,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:01:01,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:01:01,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:01:01,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:01:01,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:01:01,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:01:01,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:01:01,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:01:01,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:01:01,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:01:01,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:01:01,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:01:01,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:01:01,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:01:01,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:01:01,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:01:01,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:01:01,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:01:01,702 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 [2020-10-14 09:01:01,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:01:01,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:01:01,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:01:01,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:01:01,724 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:01:01,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:01:01,724 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:01:01,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:01:01,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:01:01,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:01:01,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:01:01,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:01:01,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:01:01,726 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:01:01,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:01:01,726 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:01:01,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:01:01,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:01:01,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:01:01,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:01:01,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:01:01,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:01:01,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:01:01,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:01:01,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:01:01,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:01:01,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:01:01,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:01:01,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:01:01,729 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:01:02,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:01:02,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:01:02,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:01:02,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:01:02,073 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:01:02,077 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:01:02,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de5cbbd90/81cee1d436e44dbc81f60d4f62be44eb/FLAG4be31ca39 [2020-10-14 09:01:02,630 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:01:02,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:01:02,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de5cbbd90/81cee1d436e44dbc81f60d4f62be44eb/FLAG4be31ca39 [2020-10-14 09:01:02,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de5cbbd90/81cee1d436e44dbc81f60d4f62be44eb [2020-10-14 09:01:02,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:01:02,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:01:02,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:01:02,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:01:02,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:01:02,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:01:02" (1/1) ... [2020-10-14 09:01:02,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a05326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:02, skipping insertion in model container [2020-10-14 09:01:02,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:01:02" (1/1) ... [2020-10-14 09:01:02,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:01:03,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:01:03,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:01:03,532 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:01:03,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:01:03,678 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:01:03,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:03 WrapperNode [2020-10-14 09:01:03,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:01:03,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:01:03,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:01:03,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:01:03,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:03" (1/1) ... [2020-10-14 09:01:03,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:03" (1/1) ... [2020-10-14 09:01:03,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:03" (1/1) ... [2020-10-14 09:01:03,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:03" (1/1) ... [2020-10-14 09:01:03,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:03" (1/1) ... [2020-10-14 09:01:03,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:03" (1/1) ... [2020-10-14 09:01:03,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:03" (1/1) ... [2020-10-14 09:01:03,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:01:03,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:01:03,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:01:03,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:01:03,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:03" (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 [2020-10-14 09:01:03,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:01:03,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:01:03,802 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:01:03,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:01:03,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:01:03,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:01:03,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:01:03,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:01:03,803 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:01:03,803 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:01:03,803 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:01:03,803 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:01:03,804 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:01:03,804 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:01:03,804 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:01:03,804 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:01:03,804 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:01:03,804 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:01:03,805 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 09:01:03,805 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-14 09:01:03,805 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-14 09:01:03,805 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:01:03,805 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:01:03,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:01:03,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:01:03,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:01:04,582 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:01:04,583 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:01:04,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:01:04 BoogieIcfgContainer [2020-10-14 09:01:04,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:01:04,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:01:04,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:01:04,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:01:04,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:01:02" (1/3) ... [2020-10-14 09:01:04,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cba7424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:01:04, skipping insertion in model container [2020-10-14 09:01:04,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:03" (2/3) ... [2020-10-14 09:01:04,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cba7424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:01:04, skipping insertion in model container [2020-10-14 09:01:04,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:01:04" (3/3) ... [2020-10-14 09:01:04,598 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:01:04,610 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:01:04,618 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:01:04,633 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:01:04,660 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:01:04,660 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:01:04,661 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:01:04,661 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:01:04,661 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:01:04,661 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:01:04,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:01:04,662 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:01:04,687 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-10-14 09:01:04,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 09:01:04,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:04,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:04,702 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:04,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:04,709 INFO L82 PathProgramCache]: Analyzing trace with hash 691167960, now seen corresponding path program 1 times [2020-10-14 09:01:04,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:04,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544522464] [2020-10-14 09:01:04,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:05,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:05,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:05,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:05,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:06,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:06,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:09,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:09,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:10,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:10,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 09:01:10,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:01:10,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:01:10,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:10,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:10,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:10,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 09:01:10,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 09:01:10,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 09:01:10,510 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 09:01:10,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:10,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:10,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:10,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:10,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:10,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:01:10,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:10,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:01:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:01:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:10,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544522464] [2020-10-14 09:01:10,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:10,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:01:10,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418724576] [2020-10-14 09:01:10,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:01:10,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:10,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:01:10,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:01:10,650 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 4 states. [2020-10-14 09:01:11,074 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-14 09:01:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:12,465 INFO L93 Difference]: Finished difference Result 348 states and 567 transitions. [2020-10-14 09:01:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:01:12,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-10-14 09:01:12,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:12,482 INFO L225 Difference]: With dead ends: 348 [2020-10-14 09:01:12,482 INFO L226 Difference]: Without dead ends: 244 [2020-10-14 09:01:12,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:01:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-14 09:01:12,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 242. [2020-10-14 09:01:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-14 09:01:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 345 transitions. [2020-10-14 09:01:12,556 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 345 transitions. Word has length 106 [2020-10-14 09:01:12,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:12,557 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 345 transitions. [2020-10-14 09:01:12,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:01:12,557 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 345 transitions. [2020-10-14 09:01:12,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 09:01:12,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:12,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:12,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:01:12,561 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:12,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:12,561 INFO L82 PathProgramCache]: Analyzing trace with hash 729392641, now seen corresponding path program 1 times [2020-10-14 09:01:12,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:12,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269805853] [2020-10-14 09:01:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:12,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:12,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:13,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:13,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:13,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:15,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:17,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:17,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 09:01:17,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:01:17,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:01:17,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:17,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:01:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 09:01:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:01:17,905 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 09:01:17,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:17,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:17,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:17,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:17,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:01:17,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:17,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:01:17,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:17,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:01:17,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:17,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269805853] [2020-10-14 09:01:17,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:17,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:01:17,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390917448] [2020-10-14 09:01:17,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:01:17,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:17,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:01:17,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:01:17,977 INFO L87 Difference]: Start difference. First operand 242 states and 345 transitions. Second operand 4 states. [2020-10-14 09:01:18,256 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-14 09:01:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:19,211 INFO L93 Difference]: Finished difference Result 574 states and 873 transitions. [2020-10-14 09:01:19,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:01:19,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-10-14 09:01:19,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:19,217 INFO L225 Difference]: With dead ends: 574 [2020-10-14 09:01:19,218 INFO L226 Difference]: Without dead ends: 400 [2020-10-14 09:01:19,220 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 [2020-10-14 09:01:19,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-14 09:01:19,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 398. [2020-10-14 09:01:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-14 09:01:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 593 transitions. [2020-10-14 09:01:19,258 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 593 transitions. Word has length 107 [2020-10-14 09:01:19,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:19,258 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 593 transitions. [2020-10-14 09:01:19,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:01:19,259 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 593 transitions. [2020-10-14 09:01:19,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 09:01:19,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:19,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:19,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:01:19,265 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:19,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:19,266 INFO L82 PathProgramCache]: Analyzing trace with hash 671729631, now seen corresponding path program 1 times [2020-10-14 09:01:19,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:19,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252546158] [2020-10-14 09:01:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:19,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:19,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:19,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:24,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:24,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 09:01:24,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:01:24,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:01:24,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:24,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 09:01:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 09:01:24,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:24,654 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 09:01:24,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:24,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:24,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:24,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:24,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:24,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:01:24,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:24,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:01:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:01:24,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:24,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252546158] [2020-10-14 09:01:24,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:24,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:01:24,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522932295] [2020-10-14 09:01:24,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:01:24,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:24,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:01:24,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:01:24,706 INFO L87 Difference]: Start difference. First operand 398 states and 593 transitions. Second operand 4 states. [2020-10-14 09:01:25,069 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-14 09:01:26,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:26,007 INFO L93 Difference]: Finished difference Result 1026 states and 1591 transitions. [2020-10-14 09:01:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:01:26,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-10-14 09:01:26,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:26,014 INFO L225 Difference]: With dead ends: 1026 [2020-10-14 09:01:26,014 INFO L226 Difference]: Without dead ends: 696 [2020-10-14 09:01:26,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:01:26,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-14 09:01:26,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 694. [2020-10-14 09:01:26,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-14 09:01:26,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1061 transitions. [2020-10-14 09:01:26,072 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1061 transitions. Word has length 108 [2020-10-14 09:01:26,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:26,073 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1061 transitions. [2020-10-14 09:01:26,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:01:26,073 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1061 transitions. [2020-10-14 09:01:26,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 09:01:26,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:26,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:26,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:01:26,075 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:26,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:26,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1563150490, now seen corresponding path program 1 times [2020-10-14 09:01:26,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:26,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452186359] [2020-10-14 09:01:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:26,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:26,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:26,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:26,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:26,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:27,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:31,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:31,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 09:01:31,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:01:31,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:01:31,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:31,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 09:01:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 09:01:31,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:31,388 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 09:01:31,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:31,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:31,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:31,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:31,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:31,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:01:31,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:31,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:01:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:31,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:01:31,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:31,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:31,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452186359] [2020-10-14 09:01:31,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:31,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:01:31,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312629022] [2020-10-14 09:01:31,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:01:31,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:31,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:01:31,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:01:31,471 INFO L87 Difference]: Start difference. First operand 694 states and 1061 transitions. Second operand 4 states. [2020-10-14 09:01:31,840 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-14 09:01:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:32,950 INFO L93 Difference]: Finished difference Result 1882 states and 2943 transitions. [2020-10-14 09:01:32,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:01:32,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-10-14 09:01:32,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:32,961 INFO L225 Difference]: With dead ends: 1882 [2020-10-14 09:01:32,961 INFO L226 Difference]: Without dead ends: 1256 [2020-10-14 09:01:32,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:01:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2020-10-14 09:01:33,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1254. [2020-10-14 09:01:33,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1254 states. [2020-10-14 09:01:33,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1941 transitions. [2020-10-14 09:01:33,037 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1941 transitions. Word has length 109 [2020-10-14 09:01:33,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:33,038 INFO L479 AbstractCegarLoop]: Abstraction has 1254 states and 1941 transitions. [2020-10-14 09:01:33,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:01:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1941 transitions. [2020-10-14 09:01:33,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 09:01:33,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:33,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:33,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:01:33,041 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:33,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:33,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1545169305, now seen corresponding path program 1 times [2020-10-14 09:01:33,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:33,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786771646] [2020-10-14 09:01:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:33,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:33,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:33,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:33,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:33,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:34,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:38,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:38,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 09:01:38,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:01:38,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:01:38,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:38,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 09:01:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 09:01:38,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:38,355 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 09:01:38,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:38,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:38,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:38,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:38,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:38,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:01:38,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:38,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:38,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:01:38,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:38,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:01:38,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:38,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:38,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786771646] [2020-10-14 09:01:38,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:38,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:01:38,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064215878] [2020-10-14 09:01:38,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:01:38,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:38,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:01:38,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:01:38,406 INFO L87 Difference]: Start difference. First operand 1254 states and 1941 transitions. Second operand 4 states. [2020-10-14 09:01:38,632 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-14 09:01:39,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:39,426 INFO L93 Difference]: Finished difference Result 3498 states and 5479 transitions. [2020-10-14 09:01:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:01:39,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-14 09:01:39,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:39,439 INFO L225 Difference]: With dead ends: 3498 [2020-10-14 09:01:39,440 INFO L226 Difference]: Without dead ends: 2312 [2020-10-14 09:01:39,443 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 [2020-10-14 09:01:39,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2020-10-14 09:01:39,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 2310. [2020-10-14 09:01:39,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2310 states. [2020-10-14 09:01:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 3589 transitions. [2020-10-14 09:01:39,552 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 3589 transitions. Word has length 110 [2020-10-14 09:01:39,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:39,553 INFO L479 AbstractCegarLoop]: Abstraction has 2310 states and 3589 transitions. [2020-10-14 09:01:39,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:01:39,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 3589 transitions. [2020-10-14 09:01:39,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 09:01:39,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:39,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:39,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:01:39,558 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:39,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1775474530, now seen corresponding path program 1 times [2020-10-14 09:01:39,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:39,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994850728] [2020-10-14 09:01:39,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:39,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:39,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:39,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:40,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:40,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:44,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:44,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 09:01:44,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:01:44,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:01:44,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:44,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:44,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:44,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 09:01:44,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 09:01:44,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:44,843 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 09:01:44,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:44,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:44,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:44,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:44,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:44,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:01:44,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:44,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:01:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:01:44,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:44,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994850728] [2020-10-14 09:01:44,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:44,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:01:44,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839558527] [2020-10-14 09:01:44,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:01:44,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:44,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:01:44,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:01:44,893 INFO L87 Difference]: Start difference. First operand 2310 states and 3589 transitions. Second operand 4 states. [2020-10-14 09:01:45,160 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-14 09:01:46,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:46,169 INFO L93 Difference]: Finished difference Result 6538 states and 10215 transitions. [2020-10-14 09:01:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:01:46,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-14 09:01:46,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:46,200 INFO L225 Difference]: With dead ends: 6538 [2020-10-14 09:01:46,201 INFO L226 Difference]: Without dead ends: 4296 [2020-10-14 09:01:46,211 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 [2020-10-14 09:01:46,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2020-10-14 09:01:46,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 4294. [2020-10-14 09:01:46,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4294 states. [2020-10-14 09:01:46,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 6661 transitions. [2020-10-14 09:01:46,518 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 6661 transitions. Word has length 111 [2020-10-14 09:01:46,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:46,518 INFO L479 AbstractCegarLoop]: Abstraction has 4294 states and 6661 transitions. [2020-10-14 09:01:46,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:01:46,519 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 6661 transitions. [2020-10-14 09:01:46,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 09:01:46,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:46,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:46,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:01:46,522 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:46,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:46,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1019747906, now seen corresponding path program 1 times [2020-10-14 09:01:46,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:46,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673011035] [2020-10-14 09:01:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:46,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:46,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:46,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:47,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:47,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:47,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:50,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:50,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:50,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:50,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:51,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:51,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 09:01:51,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:01:51,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:01:51,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:51,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:51,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:51,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:01:51,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 09:01:51,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:51,822 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 09:01:51,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:51,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:51,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:51,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:51,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:51,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:01:51,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:51,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:51,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:01:51,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:01:51,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:51,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673011035] [2020-10-14 09:01:51,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:51,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:01:51,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097501005] [2020-10-14 09:01:51,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:01:51,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:51,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:01:51,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:01:51,870 INFO L87 Difference]: Start difference. First operand 4294 states and 6661 transitions. Second operand 4 states. [2020-10-14 09:01:52,124 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-14 09:01:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:53,141 INFO L93 Difference]: Finished difference Result 12234 states and 19015 transitions. [2020-10-14 09:01:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:01:53,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-14 09:01:53,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:53,183 INFO L225 Difference]: With dead ends: 12234 [2020-10-14 09:01:53,183 INFO L226 Difference]: Without dead ends: 8008 [2020-10-14 09:01:53,195 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 [2020-10-14 09:01:53,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8008 states. [2020-10-14 09:01:53,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8008 to 8006. [2020-10-14 09:01:53,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8006 states. [2020-10-14 09:01:53,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8006 states to 8006 states and 12357 transitions. [2020-10-14 09:01:53,607 INFO L78 Accepts]: Start accepts. Automaton has 8006 states and 12357 transitions. Word has length 112 [2020-10-14 09:01:53,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:53,607 INFO L479 AbstractCegarLoop]: Abstraction has 8006 states and 12357 transitions. [2020-10-14 09:01:53,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:01:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand 8006 states and 12357 transitions. [2020-10-14 09:01:53,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 09:01:53,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:53,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:53,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:01:53,609 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:53,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1523696999, now seen corresponding path program 1 times [2020-10-14 09:01:53,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:53,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293327940] [2020-10-14 09:01:53,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:53,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:53,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:53,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:53,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:53,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:54,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:54,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:56,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:56,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:56,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:58,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:58,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 09:01:58,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:01:58,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:01:58,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:58,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:01:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:01:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 09:01:58,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:58,939 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 09:01:58,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:58,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:58,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:58,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:58,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:58,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 09:01:58,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:58,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:01:58,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:59,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293327940] [2020-10-14 09:01:59,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:59,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:01:59,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403638900] [2020-10-14 09:01:59,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:01:59,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:59,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:01:59,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:01:59,009 INFO L87 Difference]: Start difference. First operand 8006 states and 12357 transitions. Second operand 6 states. [2020-10-14 09:01:59,307 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-14 09:02:00,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:00,307 INFO L93 Difference]: Finished difference Result 15944 states and 24646 transitions. [2020-10-14 09:02:00,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:00,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-14 09:02:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:00,366 INFO L225 Difference]: With dead ends: 15944 [2020-10-14 09:02:00,366 INFO L226 Difference]: Without dead ends: 8006 [2020-10-14 09:02:00,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:02:00,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8006 states. [2020-10-14 09:02:00,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8006 to 8006. [2020-10-14 09:02:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8006 states. [2020-10-14 09:02:00,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8006 states to 8006 states and 12293 transitions. [2020-10-14 09:02:00,813 INFO L78 Accepts]: Start accepts. Automaton has 8006 states and 12293 transitions. Word has length 113 [2020-10-14 09:02:00,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:00,814 INFO L479 AbstractCegarLoop]: Abstraction has 8006 states and 12293 transitions. [2020-10-14 09:02:00,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:00,814 INFO L276 IsEmpty]: Start isEmpty. Operand 8006 states and 12293 transitions. [2020-10-14 09:02:00,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 09:02:00,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:00,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:00,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:02:00,816 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:00,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:00,816 INFO L82 PathProgramCache]: Analyzing trace with hash 59625442, now seen corresponding path program 1 times [2020-10-14 09:02:00,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:00,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484170988] [2020-10-14 09:02:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:00,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:00,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:00,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:01,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:01,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:01,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:04,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:04,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:04,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:05,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:05,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 09:02:05,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:02:05,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:02:05,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:05,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:02:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 09:02:05,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:06,300 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 09:02:06,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:06,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:06,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:06,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:06,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:06,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 09:02:06,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:06,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:02:06,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:02:06,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:06,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484170988] [2020-10-14 09:02:06,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:06,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:02:06,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368457975] [2020-10-14 09:02:06,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:06,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:06,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:06,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:06,412 INFO L87 Difference]: Start difference. First operand 8006 states and 12293 transitions. Second operand 6 states. [2020-10-14 09:02:06,709 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-14 09:02:07,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:07,885 INFO L93 Difference]: Finished difference Result 23818 states and 36615 transitions. [2020-10-14 09:02:07,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:07,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-14 09:02:07,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:07,927 INFO L225 Difference]: With dead ends: 23818 [2020-10-14 09:02:07,927 INFO L226 Difference]: Without dead ends: 15880 [2020-10-14 09:02:07,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:02:07,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15880 states. [2020-10-14 09:02:08,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15880 to 15878. [2020-10-14 09:02:08,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15878 states. [2020-10-14 09:02:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15878 states to 15878 states and 24325 transitions. [2020-10-14 09:02:08,736 INFO L78 Accepts]: Start accepts. Automaton has 15878 states and 24325 transitions. Word has length 113 [2020-10-14 09:02:08,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:08,736 INFO L479 AbstractCegarLoop]: Abstraction has 15878 states and 24325 transitions. [2020-10-14 09:02:08,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:08,736 INFO L276 IsEmpty]: Start isEmpty. Operand 15878 states and 24325 transitions. [2020-10-14 09:02:08,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 09:02:08,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:08,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:08,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:02:08,738 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:08,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:08,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1782405091, now seen corresponding path program 1 times [2020-10-14 09:02:08,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:08,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711815258] [2020-10-14 09:02:08,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:08,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:08,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:08,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:08,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:09,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:09,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:09,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:13,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:13,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 09:02:13,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:02:13,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:02:13,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:13,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:02:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 09:02:13,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:14,031 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 09:02:14,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:14,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:14,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:14,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:14,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:14,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:02:14,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:14,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:14,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:14,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:14,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:02:14,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:14,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711815258] [2020-10-14 09:02:14,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:14,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:02:14,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907394503] [2020-10-14 09:02:14,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:14,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:14,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:14,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:14,091 INFO L87 Difference]: Start difference. First operand 15878 states and 24325 transitions. Second operand 6 states. [2020-10-14 09:02:14,343 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-14 09:02:15,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:15,959 INFO L93 Difference]: Finished difference Result 47370 states and 72583 transitions. [2020-10-14 09:02:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:15,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-14 09:02:15,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:16,012 INFO L225 Difference]: With dead ends: 47370 [2020-10-14 09:02:16,012 INFO L226 Difference]: Without dead ends: 31560 [2020-10-14 09:02:16,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:02:16,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31560 states. [2020-10-14 09:02:17,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31560 to 31558. [2020-10-14 09:02:17,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31558 states. [2020-10-14 09:02:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31558 states to 31558 states and 48197 transitions. [2020-10-14 09:02:17,410 INFO L78 Accepts]: Start accepts. Automaton has 31558 states and 48197 transitions. Word has length 113 [2020-10-14 09:02:17,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:17,410 INFO L479 AbstractCegarLoop]: Abstraction has 31558 states and 48197 transitions. [2020-10-14 09:02:17,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:17,410 INFO L276 IsEmpty]: Start isEmpty. Operand 31558 states and 48197 transitions. [2020-10-14 09:02:17,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 09:02:17,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:17,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:17,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:02:17,411 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:17,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:17,412 INFO L82 PathProgramCache]: Analyzing trace with hash -455019902, now seen corresponding path program 1 times [2020-10-14 09:02:17,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:17,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101267830] [2020-10-14 09:02:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:17,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:17,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:17,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:17,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:22,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:22,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 09:02:22,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:02:22,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:02:22,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:22,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:02:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 09:02:22,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:22,691 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 09:02:22,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:22,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:22,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:22,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:22,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:22,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:02:22,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:22,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:22,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:02:22,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:22,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101267830] [2020-10-14 09:02:22,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:22,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:02:22,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615112673] [2020-10-14 09:02:22,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:22,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:22,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:22,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:22,735 INFO L87 Difference]: Start difference. First operand 31558 states and 48197 transitions. Second operand 6 states. [2020-10-14 09:02:22,989 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-14 09:02:25,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:25,746 INFO L93 Difference]: Finished difference Result 94282 states and 143943 transitions. [2020-10-14 09:02:25,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:25,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-14 09:02:25,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:25,839 INFO L225 Difference]: With dead ends: 94282 [2020-10-14 09:02:25,840 INFO L226 Difference]: Without dead ends: 62792 [2020-10-14 09:02:25,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:02:25,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62792 states. [2020-10-14 09:02:28,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62792 to 62790. [2020-10-14 09:02:28,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62790 states. [2020-10-14 09:02:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62790 states to 62790 states and 95557 transitions. [2020-10-14 09:02:28,588 INFO L78 Accepts]: Start accepts. Automaton has 62790 states and 95557 transitions. Word has length 113 [2020-10-14 09:02:28,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:28,588 INFO L479 AbstractCegarLoop]: Abstraction has 62790 states and 95557 transitions. [2020-10-14 09:02:28,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:28,589 INFO L276 IsEmpty]: Start isEmpty. Operand 62790 states and 95557 transitions. [2020-10-14 09:02:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 09:02:28,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:28,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:28,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:02:28,595 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:28,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:28,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1266310973, now seen corresponding path program 1 times [2020-10-14 09:02:28,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:28,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015650747] [2020-10-14 09:02:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:28,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:28,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:29,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:29,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 09:02:29,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:02:29,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1268 [2020-10-14 09:02:29,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:29,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:29,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:02:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 09:02:29,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:30,142 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 09:02:30,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:30,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:30,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:30,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:30,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:30,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:02:30,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:30,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:02:30,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:30,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015650747] [2020-10-14 09:02:30,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:30,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:02:30,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158997016] [2020-10-14 09:02:30,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:30,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:30,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:30,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:30,188 INFO L87 Difference]: Start difference. First operand 62790 states and 95557 transitions. Second operand 6 states. [2020-10-14 09:02:30,446 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-14 09:02:37,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:37,368 INFO L93 Difference]: Finished difference Result 187722 states and 285511 transitions. [2020-10-14 09:02:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:37,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-14 09:02:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:37,526 INFO L225 Difference]: With dead ends: 187722 [2020-10-14 09:02:37,526 INFO L226 Difference]: Without dead ends: 125000 [2020-10-14 09:02:37,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:02:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125000 states. [2020-10-14 09:02:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125000 to 124998. [2020-10-14 09:02:42,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124998 states. [2020-10-14 09:02:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124998 states to 124998 states and 189509 transitions. [2020-10-14 09:02:43,121 INFO L78 Accepts]: Start accepts. Automaton has 124998 states and 189509 transitions. Word has length 113 [2020-10-14 09:02:43,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:43,121 INFO L479 AbstractCegarLoop]: Abstraction has 124998 states and 189509 transitions. [2020-10-14 09:02:43,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:43,122 INFO L276 IsEmpty]: Start isEmpty. Operand 124998 states and 189509 transitions. [2020-10-14 09:02:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 09:02:43,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:43,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:43,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:02:43,123 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:43,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:43,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1493258398, now seen corresponding path program 1 times [2020-10-14 09:02:43,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:43,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220856845] [2020-10-14 09:02:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:43,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:43,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:43,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 09:02:43,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:43,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-14 09:02:43,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:43,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 09:02:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 09:02:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 09:02:43,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:43,817 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 09:02:43,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:43,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:43,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:43,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:43,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:43,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:02:43,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:43,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:43,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:43,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:43,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:43,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:43,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220856845] [2020-10-14 09:02:43,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:43,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 09:02:43,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297535026] [2020-10-14 09:02:43,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 09:02:43,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:43,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 09:02:43,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:02:43,861 INFO L87 Difference]: Start difference. First operand 124998 states and 189509 transitions. Second operand 11 states. [2020-10-14 09:02:44,186 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 206