/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_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:30:09,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:30:09,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:30:09,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:30:09,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:30:09,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:30:09,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:30:09,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:30:09,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:30:09,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:30:09,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:30:09,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:30:09,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:30:09,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:30:09,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:30:09,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:30:09,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:30:09,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:30:09,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:30:09,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:30:09,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:30:09,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:30:09,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:30:09,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:30:09,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:30:09,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:30:09,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:30:09,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:30:09,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:30:09,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:30:09,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:30:09,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:30:09,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:30:09,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:30:09,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:30:09,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:30:09,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:30:09,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:30:09,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:30:09,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:30:09,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:30:09,608 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 08:30:09,631 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:30:09,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:30:09,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:30:09,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:30:09,633 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:30:09,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:30:09,634 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:30:09,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:30:09,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:30:09,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:30:09,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:30:09,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:30:09,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:30:09,635 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:30:09,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:30:09,635 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:30:09,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:30:09,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:30:09,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:30:09,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:30:09,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:30:09,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:30:09,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:30:09,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:30:09,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:30:09,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:30:09,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:30:09,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:30:09,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:30:09,638 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 08:30:09,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:30:09,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:30:09,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:30:09,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:30:09,975 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:30:09,976 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-14 08:30:10,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaa548f6c/236de049f64d4dfcad36212dd5ff4ee0/FLAG0b5c653bf [2020-10-14 08:30:10,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:30:10,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-14 08:30:10,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaa548f6c/236de049f64d4dfcad36212dd5ff4ee0/FLAG0b5c653bf [2020-10-14 08:30:10,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaa548f6c/236de049f64d4dfcad36212dd5ff4ee0 [2020-10-14 08:30:10,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:30:10,898 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:30:10,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:30:10,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:30:10,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:30:10,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:30:10" (1/1) ... [2020-10-14 08:30:10,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b134fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:30:10, skipping insertion in model container [2020-10-14 08:30:10,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:30:10" (1/1) ... [2020-10-14 08:30:10,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:30:10,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:30:11,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:30:11,532 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:30:11,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:30:11,741 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:30:11,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:30:11 WrapperNode [2020-10-14 08:30:11,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:30:11,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:30:11,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:30:11,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:30:11,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:30:11" (1/1) ... [2020-10-14 08:30:11,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:30:11" (1/1) ... [2020-10-14 08:30:11,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:30:11" (1/1) ... [2020-10-14 08:30:11,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:30:11" (1/1) ... [2020-10-14 08:30:11,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:30:11" (1/1) ... [2020-10-14 08:30:11,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:30:11" (1/1) ... [2020-10-14 08:30:11,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:30:11" (1/1) ... [2020-10-14 08:30:11,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:30:11,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:30:11,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:30:11,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:30:11,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:30:11" (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 08:30:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:30:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:30:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:30:11,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:30:11,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:30:11,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:30:11,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:30:11,936 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:30:11,936 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:30:11,937 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:30:11,937 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:30:11,937 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:30:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:30:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:30:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:30:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:30:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:30:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:30:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:30:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:30:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:30:13,446 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:30:13,447 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:30:13,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:30:13 BoogieIcfgContainer [2020-10-14 08:30:13,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:30:13,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:30:13,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:30:13,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:30:13,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:30:10" (1/3) ... [2020-10-14 08:30:13,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14939312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:30:13, skipping insertion in model container [2020-10-14 08:30:13,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:30:11" (2/3) ... [2020-10-14 08:30:13,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14939312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:30:13, skipping insertion in model container [2020-10-14 08:30:13,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:30:13" (3/3) ... [2020-10-14 08:30:13,462 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-14 08:30:13,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:30:13,482 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:30:13,497 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:30:13,525 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:30:13,525 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:30:13,525 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:30:13,525 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:30:13,526 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:30:13,526 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:30:13,526 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:30:13,526 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:30:13,551 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states. [2020-10-14 08:30:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 08:30:13,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:13,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:13,579 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:13,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:13,585 INFO L82 PathProgramCache]: Analyzing trace with hash 564017095, now seen corresponding path program 1 times [2020-10-14 08:30:13,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:13,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561427749] [2020-10-14 08:30:13,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:14,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:14,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:15,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:15,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:19,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:19,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 08:30:19,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:30:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-14 08:30:19,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:19,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:19,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:19,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 08:30:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:30:19,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 08:30:19,762 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:30:19,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:19,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:19,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:19,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:19,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 08:30:19,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:19,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:19,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:19,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:30:19,914 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 08:30:19,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561427749] [2020-10-14 08:30:19,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:19,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:19,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575902457] [2020-10-14 08:30:19,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:19,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:19,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:19,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:19,946 INFO L87 Difference]: Start difference. First operand 324 states. Second operand 4 states. [2020-10-14 08:30:20,400 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-14 08:30:22,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:22,397 INFO L93 Difference]: Finished difference Result 577 states and 1002 transitions. [2020-10-14 08:30:22,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:30:22,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-14 08:30:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:22,419 INFO L225 Difference]: With dead ends: 577 [2020-10-14 08:30:22,419 INFO L226 Difference]: Without dead ends: 438 [2020-10-14 08:30:22,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:30:22,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-14 08:30:22,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 436. [2020-10-14 08:30:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-14 08:30:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 726 transitions. [2020-10-14 08:30:22,511 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 726 transitions. Word has length 115 [2020-10-14 08:30:22,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:22,512 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 726 transitions. [2020-10-14 08:30:22,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:22,513 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 726 transitions. [2020-10-14 08:30:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 08:30:22,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:22,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:22,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:30:22,518 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:22,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:22,518 INFO L82 PathProgramCache]: Analyzing trace with hash 551140886, now seen corresponding path program 1 times [2020-10-14 08:30:22,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:22,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759018530] [2020-10-14 08:30:22,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:22,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:22,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:22,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:23,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:23,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:24,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:24,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:27,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:27,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 08:30:27,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:30:27,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 08:30:27,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:27,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 08:30:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 08:30:27,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:30:28,073 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:30:28,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:28,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:28,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:28,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:28,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:28,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:30:28,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:28,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:28,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:30:28,138 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 08:30:28,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759018530] [2020-10-14 08:30:28,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:28,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:28,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419336569] [2020-10-14 08:30:28,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:28,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:28,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:28,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:28,143 INFO L87 Difference]: Start difference. First operand 436 states and 726 transitions. Second operand 4 states. [2020-10-14 08:30:28,490 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-14 08:30:30,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:30,239 INFO L93 Difference]: Finished difference Result 904 states and 1518 transitions. [2020-10-14 08:30:30,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:30:30,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-10-14 08:30:30,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:30,264 INFO L225 Difference]: With dead ends: 904 [2020-10-14 08:30:30,264 INFO L226 Difference]: Without dead ends: 661 [2020-10-14 08:30:30,267 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 08:30:30,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-10-14 08:30:30,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 659. [2020-10-14 08:30:30,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-10-14 08:30:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1102 transitions. [2020-10-14 08:30:30,324 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1102 transitions. Word has length 118 [2020-10-14 08:30:30,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:30,325 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 1102 transitions. [2020-10-14 08:30:30,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1102 transitions. [2020-10-14 08:30:30,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 08:30:30,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:30,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:30,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:30:30,329 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:30,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:30,329 INFO L82 PathProgramCache]: Analyzing trace with hash 78161563, now seen corresponding path program 1 times [2020-10-14 08:30:30,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:30,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302910305] [2020-10-14 08:30:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:30,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:30,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:30,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:31,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:35,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:35,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 08:30:35,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:30:35,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 08:30:35,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:35,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:35,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 08:30:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 08:30:35,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:30:35,909 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:30:35,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:35,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:35,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:35,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:35,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:35,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 08:30:35,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:35,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:35,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:30:35,986 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 08:30:35,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302910305] [2020-10-14 08:30:35,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:35,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:35,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035652548] [2020-10-14 08:30:35,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:35,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:35,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:35,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:35,990 INFO L87 Difference]: Start difference. First operand 659 states and 1102 transitions. Second operand 4 states. [2020-10-14 08:30:36,467 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-14 08:30:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:38,184 INFO L93 Difference]: Finished difference Result 1555 states and 2612 transitions. [2020-10-14 08:30:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:30:38,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-14 08:30:38,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:38,192 INFO L225 Difference]: With dead ends: 1555 [2020-10-14 08:30:38,193 INFO L226 Difference]: Without dead ends: 1089 [2020-10-14 08:30:38,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:30:38,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2020-10-14 08:30:38,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1087. [2020-10-14 08:30:38,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-10-14 08:30:38,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1818 transitions. [2020-10-14 08:30:38,256 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1818 transitions. Word has length 121 [2020-10-14 08:30:38,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:38,257 INFO L479 AbstractCegarLoop]: Abstraction has 1087 states and 1818 transitions. [2020-10-14 08:30:38,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:38,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1818 transitions. [2020-10-14 08:30:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 08:30:38,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:38,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:38,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:30:38,267 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:38,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:38,267 INFO L82 PathProgramCache]: Analyzing trace with hash -234016918, now seen corresponding path program 1 times [2020-10-14 08:30:38,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:38,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609811333] [2020-10-14 08:30:38,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:38,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:38,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:38,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:38,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:38,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:39,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:39,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:39,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:43,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:43,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 08:30:43,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:30:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 08:30:43,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:43,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 08:30:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 08:30:43,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:30:43,857 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:30:43,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:43,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:43,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:43,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:43,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:43,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:30:43,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:43,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:43,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:30:43,945 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 08:30:43,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609811333] [2020-10-14 08:30:43,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:43,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:43,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26154053] [2020-10-14 08:30:43,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:43,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:43,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:43,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:43,949 INFO L87 Difference]: Start difference. First operand 1087 states and 1818 transitions. Second operand 4 states. [2020-10-14 08:30:44,412 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-14 08:30:45,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:45,999 INFO L93 Difference]: Finished difference Result 2787 states and 4660 transitions. [2020-10-14 08:30:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:30:45,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-10-14 08:30:46,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:46,009 INFO L225 Difference]: With dead ends: 2787 [2020-10-14 08:30:46,010 INFO L226 Difference]: Without dead ends: 1893 [2020-10-14 08:30:46,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:30:46,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2020-10-14 08:30:46,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1891. [2020-10-14 08:30:46,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1891 states. [2020-10-14 08:30:46,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 3114 transitions. [2020-10-14 08:30:46,104 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 3114 transitions. Word has length 124 [2020-10-14 08:30:46,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:46,104 INFO L479 AbstractCegarLoop]: Abstraction has 1891 states and 3114 transitions. [2020-10-14 08:30:46,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:46,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 3114 transitions. [2020-10-14 08:30:46,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 08:30:46,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:46,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:46,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:30:46,108 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:46,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:46,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1633822303, now seen corresponding path program 1 times [2020-10-14 08:30:46,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:46,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770101895] [2020-10-14 08:30:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:46,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:46,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:46,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:46,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:47,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:47,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:47,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:47,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:48,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:48,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:51,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:51,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 08:30:51,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:30:51,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 08:30:51,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:51,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 08:30:51,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 08:30:51,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:30:51,545 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:30:51,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:51,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:51,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:51,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:51,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:51,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:30:51,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:51,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:51,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:51,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:51,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:51,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:30:51,602 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 08:30:51,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770101895] [2020-10-14 08:30:51,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:51,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:51,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290674323] [2020-10-14 08:30:51,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:51,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:51,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:51,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:51,605 INFO L87 Difference]: Start difference. First operand 1891 states and 3114 transitions. Second operand 4 states. [2020-10-14 08:30:52,032 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-14 08:30:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:53,952 INFO L93 Difference]: Finished difference Result 3541 states and 5852 transitions. [2020-10-14 08:30:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:30:53,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-14 08:30:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:53,971 INFO L225 Difference]: With dead ends: 3541 [2020-10-14 08:30:53,971 INFO L226 Difference]: Without dead ends: 2655 [2020-10-14 08:30:53,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:30:53,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2020-10-14 08:30:54,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2653. [2020-10-14 08:30:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2653 states. [2020-10-14 08:30:54,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4366 transitions. [2020-10-14 08:30:54,084 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4366 transitions. Word has length 127 [2020-10-14 08:30:54,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:54,085 INFO L479 AbstractCegarLoop]: Abstraction has 2653 states and 4366 transitions. [2020-10-14 08:30:54,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:54,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4366 transitions. [2020-10-14 08:30:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 08:30:54,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:54,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:54,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:30:54,090 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:54,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:54,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1921259219, now seen corresponding path program 1 times [2020-10-14 08:30:54,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:54,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332614364] [2020-10-14 08:30:54,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:54,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:54,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:54,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:54,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:54,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:55,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:55,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:55,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:59,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:59,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 08:30:59,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:30:59,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 08:30:59,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:59,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:59,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:30:59,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:30:59,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 08:30:59,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:59,603 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:30:59,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:59,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:59,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:59,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:59,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:59,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:30:59,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:59,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:59,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:30:59,682 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 08:30:59,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332614364] [2020-10-14 08:30:59,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:59,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:30:59,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514853009] [2020-10-14 08:30:59,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:30:59,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:59,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:30:59,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:30:59,685 INFO L87 Difference]: Start difference. First operand 2653 states and 4366 transitions. Second operand 5 states. [2020-10-14 08:31:02,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:31:02,381 INFO L93 Difference]: Finished difference Result 7786 states and 12808 transitions. [2020-10-14 08:31:02,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:31:02,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-14 08:31:02,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:31:02,407 INFO L225 Difference]: With dead ends: 7786 [2020-10-14 08:31:02,407 INFO L226 Difference]: Without dead ends: 5198 [2020-10-14 08:31:02,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:31:02,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5198 states. [2020-10-14 08:31:02,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5198 to 5196. [2020-10-14 08:31:02,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5196 states. [2020-10-14 08:31:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5196 states to 5196 states and 8524 transitions. [2020-10-14 08:31:02,698 INFO L78 Accepts]: Start accepts. Automaton has 5196 states and 8524 transitions. Word has length 127 [2020-10-14 08:31:02,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:31:02,698 INFO L479 AbstractCegarLoop]: Abstraction has 5196 states and 8524 transitions. [2020-10-14 08:31:02,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:31:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 5196 states and 8524 transitions. [2020-10-14 08:31:02,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 08:31:02,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:31:02,702 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, 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 08:31:02,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:31:02,702 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:31:02,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:31:02,703 INFO L82 PathProgramCache]: Analyzing trace with hash -171825772, now seen corresponding path program 1 times [2020-10-14 08:31:02,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:31:02,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724228678] [2020-10-14 08:31:02,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:31:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:02,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:02,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:02,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:03,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:04,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:04,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:04,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:04,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:04,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:07,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:07,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 08:31:07,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:31:07,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:31:07,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:07,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:07,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:31:07,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:31:07,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 08:31:07,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:08,082 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:31:08,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:31:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:08,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:08,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:31:08,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:31:08,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:31:08,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:08,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:31:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:31:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:31:08,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:08,169 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 08:31:08,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724228678] [2020-10-14 08:31:08,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:31:08,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:31:08,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075423380] [2020-10-14 08:31:08,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:31:08,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:31:08,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:31:08,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:31:08,172 INFO L87 Difference]: Start difference. First operand 5196 states and 8524 transitions. Second operand 4 states. [2020-10-14 08:31:11,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:31:11,180 INFO L93 Difference]: Finished difference Result 15440 states and 25308 transitions. [2020-10-14 08:31:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:31:11,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-14 08:31:11,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:31:11,231 INFO L225 Difference]: With dead ends: 15440 [2020-10-14 08:31:11,231 INFO L226 Difference]: Without dead ends: 10318 [2020-10-14 08:31:11,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:31:11,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10318 states. [2020-10-14 08:31:11,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10318 to 5209. [2020-10-14 08:31:11,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5209 states. [2020-10-14 08:31:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 8542 transitions. [2020-10-14 08:31:11,593 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 8542 transitions. Word has length 129 [2020-10-14 08:31:11,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:31:11,593 INFO L479 AbstractCegarLoop]: Abstraction has 5209 states and 8542 transitions. [2020-10-14 08:31:11,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:31:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 8542 transitions. [2020-10-14 08:31:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 08:31:11,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:31:11,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:31:11,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:31:11,597 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:31:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:31:11,598 INFO L82 PathProgramCache]: Analyzing trace with hash -571189319, now seen corresponding path program 1 times [2020-10-14 08:31:11,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:31:11,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321630747] [2020-10-14 08:31:11,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:31:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:11,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:11,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:11,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:11,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:11,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:12,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:12,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:16,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:16,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 08:31:16,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:31:16,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:31:16,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:16,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:16,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:31:16,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:31:16,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 08:31:16,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:17,006 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:31:17,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:31:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:17,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:17,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:17,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:31:17,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:31:17,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:31:17,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:17,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:17,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:31:17,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:31:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:31:17,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:17,052 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 08:31:17,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321630747] [2020-10-14 08:31:17,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:31:17,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:31:17,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339372452] [2020-10-14 08:31:17,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:31:17,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:31:17,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:31:17,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:31:17,054 INFO L87 Difference]: Start difference. First operand 5209 states and 8542 transitions. Second operand 4 states. [2020-10-14 08:31:20,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:31:20,123 INFO L93 Difference]: Finished difference Result 15211 states and 24946 transitions. [2020-10-14 08:31:20,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:31:20,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-14 08:31:20,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:31:20,161 INFO L225 Difference]: With dead ends: 15211 [2020-10-14 08:31:20,161 INFO L226 Difference]: Without dead ends: 10110 [2020-10-14 08:31:20,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:31:20,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10110 states. [2020-10-14 08:31:20,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10110 to 10108. [2020-10-14 08:31:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10108 states. [2020-10-14 08:31:20,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 16506 transitions. [2020-10-14 08:31:20,762 INFO L78 Accepts]: Start accepts. Automaton has 10108 states and 16506 transitions. Word has length 129 [2020-10-14 08:31:20,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:31:20,762 INFO L479 AbstractCegarLoop]: Abstraction has 10108 states and 16506 transitions. [2020-10-14 08:31:20,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:31:20,762 INFO L276 IsEmpty]: Start isEmpty. Operand 10108 states and 16506 transitions. [2020-10-14 08:31:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 08:31:20,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:31:20,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:31:20,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:31:20,768 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:31:20,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:31:20,769 INFO L82 PathProgramCache]: Analyzing trace with hash 505472295, now seen corresponding path program 1 times [2020-10-14 08:31:20,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:31:20,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077181583] [2020-10-14 08:31:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:31:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:20,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:21,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:21,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:21,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:21,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:21,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:21,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:25,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:25,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 08:31:25,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:31:25,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 08:31:25,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:25,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:31:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 08:31:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 08:31:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:31:26,209 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:31:26,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:31:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:26,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:26,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:26,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:31:26,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:31:26,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:31:26,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:26,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:26,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:31:26,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:31:26,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:31:26,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:31:26,267 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 08:31:26,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077181583] [2020-10-14 08:31:26,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:31:26,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:31:26,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365430186] [2020-10-14 08:31:26,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:31:26,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:31:26,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:31:26,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:31:26,270 INFO L87 Difference]: Start difference. First operand 10108 states and 16506 transitions. Second operand 4 states. [2020-10-14 08:31:26,617 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-14 08:31:28,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:31:28,965 INFO L93 Difference]: Finished difference Result 18512 states and 30372 transitions. [2020-10-14 08:31:28,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:31:28,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-14 08:31:28,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:31:29,004 INFO L225 Difference]: With dead ends: 18512 [2020-10-14 08:31:29,004 INFO L226 Difference]: Without dead ends: 13654 [2020-10-14 08:31:29,018 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 08:31:29,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13654 states. [2020-10-14 08:31:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13654 to 13652. [2020-10-14 08:31:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13652 states. [2020-10-14 08:31:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13652 states to 13652 states and 22266 transitions. [2020-10-14 08:31:29,698 INFO L78 Accepts]: Start accepts. Automaton has 13652 states and 22266 transitions. Word has length 129 [2020-10-14 08:31:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:31:29,699 INFO L479 AbstractCegarLoop]: Abstraction has 13652 states and 22266 transitions. [2020-10-14 08:31:29,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:31:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 13652 states and 22266 transitions. [2020-10-14 08:31:29,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 08:31:29,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:31:29,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:31:29,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:31:29,703 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:31:29,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:31:29,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1011228302, now seen corresponding path program 1 times [2020-10-14 08:31:29,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:31:29,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011611856] [2020-10-14 08:31:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:31:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:29,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:30,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:30,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:30,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:30,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:34,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:34,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 08:31:34,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:31:34,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:31:34,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:34,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:34,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:31:34,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:31:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 08:31:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:35,171 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:31:35,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:31:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:35,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:35,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:35,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:31:35,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:31:35,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:31:35,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:35,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:35,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:31:35,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:31:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:31:35,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:35,231 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 08:31:35,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011611856] [2020-10-14 08:31:35,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:31:35,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:31:35,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370564081] [2020-10-14 08:31:35,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:31:35,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:31:35,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:31:35,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:31:35,233 INFO L87 Difference]: Start difference. First operand 13652 states and 22266 transitions. Second operand 5 states. [2020-10-14 08:31:38,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:31:38,965 INFO L93 Difference]: Finished difference Result 40316 states and 65769 transitions. [2020-10-14 08:31:38,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:31:38,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-14 08:31:38,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:31:39,010 INFO L225 Difference]: With dead ends: 40316 [2020-10-14 08:31:39,011 INFO L226 Difference]: Without dead ends: 26790 [2020-10-14 08:31:39,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:31:39,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26790 states. [2020-10-14 08:31:40,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26790 to 26788. [2020-10-14 08:31:40,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26788 states. [2020-10-14 08:31:40,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26788 states to 26788 states and 43531 transitions. [2020-10-14 08:31:40,663 INFO L78 Accepts]: Start accepts. Automaton has 26788 states and 43531 transitions. Word has length 130 [2020-10-14 08:31:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:31:40,664 INFO L479 AbstractCegarLoop]: Abstraction has 26788 states and 43531 transitions. [2020-10-14 08:31:40,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:31:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 26788 states and 43531 transitions. [2020-10-14 08:31:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 08:31:40,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:31:40,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:31:40,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:31:40,668 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:31:40,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:31:40,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1805876629, now seen corresponding path program 1 times [2020-10-14 08:31:40,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:31:40,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512933358] [2020-10-14 08:31:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:31:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:40,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:40,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:40,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:45,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:45,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 08:31:45,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:31:45,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:31:45,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:45,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:31:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 08:31:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 08:31:45,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:46,083 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:31:46,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:31:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:46,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:46,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:31:46,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:31:46,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:31:46,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:46,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:31:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:31:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:31:46,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:46,129 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 08:31:46,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512933358] [2020-10-14 08:31:46,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:31:46,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:31:46,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697598107] [2020-10-14 08:31:46,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:31:46,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:31:46,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:31:46,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:31:46,131 INFO L87 Difference]: Start difference. First operand 26788 states and 43531 transitions. Second operand 4 states. [2020-10-14 08:31:52,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:31:52,552 INFO L93 Difference]: Finished difference Result 78530 states and 127639 transitions. [2020-10-14 08:31:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:31:52,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-14 08:31:52,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:31:52,614 INFO L225 Difference]: With dead ends: 78530 [2020-10-14 08:31:52,614 INFO L226 Difference]: Without dead ends: 52168 [2020-10-14 08:31:52,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:31:52,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52168 states. [2020-10-14 08:31:55,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52168 to 52166. [2020-10-14 08:31:55,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52166 states. [2020-10-14 08:31:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52166 states to 52166 states and 84395 transitions. [2020-10-14 08:31:55,856 INFO L78 Accepts]: Start accepts. Automaton has 52166 states and 84395 transitions. Word has length 132 [2020-10-14 08:31:55,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:31:55,857 INFO L479 AbstractCegarLoop]: Abstraction has 52166 states and 84395 transitions. [2020-10-14 08:31:55,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:31:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 52166 states and 84395 transitions. [2020-10-14 08:31:55,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 08:31:55,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:31:55,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:31:55,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:31:55,868 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:31:55,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:31:55,868 INFO L82 PathProgramCache]: Analyzing trace with hash 2127955264, now seen corresponding path program 1 times [2020-10-14 08:31:55,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:31:55,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347977151] [2020-10-14 08:31:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:31:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:55,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:55,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:55,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:56,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:56,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:56,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:56,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:57,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:57,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:57,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:00,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:00,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:00,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 08:32:00,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:32:00,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 08:32:00,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:00,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:00,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:32:00,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 08:32:00,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 08:32:00,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:32:01,473 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:32:01,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:32:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:32:01,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:01,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:01,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:32:01,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:32:01,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:32:01,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:01,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:32:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:32:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:32:01,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:32:01,522 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 08:32:01,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347977151] [2020-10-14 08:32:01,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:32:01,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:32:01,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334829906] [2020-10-14 08:32:01,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:32:01,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:32:01,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:32:01,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:32:01,525 INFO L87 Difference]: Start difference. First operand 52166 states and 84395 transitions. Second operand 4 states. [2020-10-14 08:32:10,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:32:10,167 INFO L93 Difference]: Finished difference Result 152994 states and 247567 transitions. [2020-10-14 08:32:10,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:32:10,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-14 08:32:10,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:32:10,293 INFO L225 Difference]: With dead ends: 152994 [2020-10-14 08:32:10,293 INFO L226 Difference]: Without dead ends: 101514 [2020-10-14 08:32:10,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:32:10,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101514 states. [2020-10-14 08:32:18,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101514 to 101512. [2020-10-14 08:32:18,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101512 states. [2020-10-14 08:32:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101512 states to 101512 states and 163452 transitions. [2020-10-14 08:32:18,353 INFO L78 Accepts]: Start accepts. Automaton has 101512 states and 163452 transitions. Word has length 132 [2020-10-14 08:32:18,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:32:18,353 INFO L479 AbstractCegarLoop]: Abstraction has 101512 states and 163452 transitions. [2020-10-14 08:32:18,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:32:18,354 INFO L276 IsEmpty]: Start isEmpty. Operand 101512 states and 163452 transitions. [2020-10-14 08:32:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 08:32:18,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:32:18,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:32:18,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:32:18,370 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:32:18,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:32:18,370 INFO L82 PathProgramCache]: Analyzing trace with hash 570078403, now seen corresponding path program 1 times [2020-10-14 08:32:18,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:32:18,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240767210] [2020-10-14 08:32:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:32:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:32:18,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:18,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:18,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:20,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:20,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:20,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:20,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:23,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:23,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 08:32:23,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:32:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:32:23,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:23,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:32:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 08:32:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 08:32:23,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:32:24,030 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:32:24,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:32:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:32:24,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:24,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:24,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:32:24,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:32:24,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:32:24,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:24,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:24,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:32:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:32:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:32:24,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:32:24,073 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 08:32:24,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240767210] [2020-10-14 08:32:24,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:32:24,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:32:24,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884928947] [2020-10-14 08:32:24,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:32:24,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:32:24,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:32:24,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:32:24,076 INFO L87 Difference]: Start difference. First operand 101512 states and 163452 transitions. Second operand 4 states. [2020-10-14 08:32:24,443 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-14 08:32:35,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:32:35,938 INFO L93 Difference]: Finished difference Result 188972 states and 308606 transitions. [2020-10-14 08:32:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:32:35,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-14 08:32:35,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:32:36,132 INFO L225 Difference]: With dead ends: 188972 [2020-10-14 08:32:36,132 INFO L226 Difference]: Without dead ends: 138042 [2020-10-14 08:32:36,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:32:36,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138042 states. [2020-10-14 08:32:45,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138042 to 138040. [2020-10-14 08:32:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138040 states. [2020-10-14 08:32:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138040 states to 138040 states and 223980 transitions. [2020-10-14 08:32:45,905 INFO L78 Accepts]: Start accepts. Automaton has 138040 states and 223980 transitions. Word has length 132 [2020-10-14 08:32:45,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:32:45,905 INFO L479 AbstractCegarLoop]: Abstraction has 138040 states and 223980 transitions. [2020-10-14 08:32:45,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:32:45,905 INFO L276 IsEmpty]: Start isEmpty. Operand 138040 states and 223980 transitions. [2020-10-14 08:32:45,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 08:32:45,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:32:45,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:32:45,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:32:45,914 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:32:45,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:32:45,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1680071312, now seen corresponding path program 1 times [2020-10-14 08:32:45,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:32:45,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486603032] [2020-10-14 08:32:45,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:32:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:32:45,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:46,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:46,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:46,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:47,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:47,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:47,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:51,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:51,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 08:32:51,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:32:51,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-14 08:32:51,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:51,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:32:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 08:32:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 08:32:51,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:32:51,354 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:32:51,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:32:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:32:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:51,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:51,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:32:51,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:32:51,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:32:51,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:51,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:51,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:32:51,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:32:51,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:32:51,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:32:51,384 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 08:32:51,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486603032] [2020-10-14 08:32:51,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:32:51,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:32:51,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027752245] [2020-10-14 08:32:51,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:32:51,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:32:51,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:32:51,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:32:51,385 INFO L87 Difference]: Start difference. First operand 138040 states and 223980 transitions. Second operand 4 states. [2020-10-14 08:33:11,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:33:11,928 INFO L93 Difference]: Finished difference Result 413266 states and 670465 transitions. [2020-10-14 08:33:11,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:33:11,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-14 08:33:11,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:33:12,345 INFO L225 Difference]: With dead ends: 413266 [2020-10-14 08:33:12,346 INFO L226 Difference]: Without dead ends: 275368 [2020-10-14 08:33:12,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:33:12,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275368 states. [2020-10-14 08:33:25,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275368 to 138069. [2020-10-14 08:33:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138069 states. [2020-10-14 08:33:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138069 states to 138069 states and 224024 transitions. [2020-10-14 08:33:25,940 INFO L78 Accepts]: Start accepts. Automaton has 138069 states and 224024 transitions. Word has length 132 [2020-10-14 08:33:25,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:33:25,940 INFO L479 AbstractCegarLoop]: Abstraction has 138069 states and 224024 transitions. [2020-10-14 08:33:25,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:33:25,940 INFO L276 IsEmpty]: Start isEmpty. Operand 138069 states and 224024 transitions. [2020-10-14 08:33:25,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 08:33:25,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:33:25,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:33:25,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:33:25,950 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:33:25,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:33:25,950 INFO L82 PathProgramCache]: Analyzing trace with hash -99461235, now seen corresponding path program 1 times [2020-10-14 08:33:25,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:33:25,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947441329] [2020-10-14 08:33:25,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:33:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:26,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:26,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:26,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:26,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:30,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:30,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 08:33:30,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:33:30,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:33:30,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:30,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:33:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:33:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 08:33:30,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:33:31,384 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 08:33:31,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:33:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:31,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:31,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:33:31,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:33:31,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:33:31,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:31,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:33:31,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:33:31,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:33:31,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:33:31,434 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 08:33:31,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947441329] [2020-10-14 08:33:31,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:33:31,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:33:31,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966540393] [2020-10-14 08:33:31,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:33:31,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:33:31,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:33:31,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:33:31,436 INFO L87 Difference]: Start difference. First operand 138069 states and 224024 transitions. Second operand 5 states.