/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:54:56,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:54:56,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:54:56,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:54:56,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:54:56,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:54:56,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:54:56,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:54:56,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:54:56,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:54:56,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:54:56,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:54:56,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:54:56,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:54:56,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:54:56,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:54:56,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:54:56,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:54:56,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:54:56,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:54:56,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:54:56,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:54:56,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:54:56,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:54:56,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:54:56,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:54:56,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:54:56,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:54:56,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:54:56,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:54:56,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:54:56,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:54:56,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:54:56,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:54:56,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:54:56,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:54:56,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:54:56,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:54:56,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:54:56,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:54:56,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:54:56,508 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 08:54:56,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:54:56,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:54:56,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:54:56,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:54:56,533 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:54:56,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:54:56,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:54:56,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:54:56,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:54:56,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:54:56,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:54:56,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:54:56,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:54:56,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:54:56,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:54:56,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:54:56,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:54:56,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:54:56,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:54:56,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:54:56,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:54:56,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:54:56,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:54:56,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:54:56,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:54:56,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:54:56,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:54:56,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:54:56,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:54:56,538 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 08:54:56,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:54:56,866 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:54:56,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:54:56,876 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:54:56,876 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:54:56,877 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-14 08:54:56,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01c0731e2/e3b6bb1698ab4f19b1901cfaf9c522fa/FLAGb699ba1e5 [2020-10-14 08:54:57,532 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:54:57,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-14 08:54:57,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01c0731e2/e3b6bb1698ab4f19b1901cfaf9c522fa/FLAGb699ba1e5 [2020-10-14 08:54:57,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01c0731e2/e3b6bb1698ab4f19b1901cfaf9c522fa [2020-10-14 08:54:57,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:54:57,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:54:57,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:54:57,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:54:57,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:54:57,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:54:57" (1/1) ... [2020-10-14 08:54:57,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a39462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:57, skipping insertion in model container [2020-10-14 08:54:57,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:54:57" (1/1) ... [2020-10-14 08:54:57,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:54:57,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:54:58,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:54:58,475 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:54:58,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:54:58,868 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:54:58,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:58 WrapperNode [2020-10-14 08:54:58,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:54:58,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:54:58,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:54:58,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:54:58,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:58" (1/1) ... [2020-10-14 08:54:58,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:58" (1/1) ... [2020-10-14 08:54:58,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:58" (1/1) ... [2020-10-14 08:54:58,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:58" (1/1) ... [2020-10-14 08:54:58,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:58" (1/1) ... [2020-10-14 08:54:58,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:58" (1/1) ... [2020-10-14 08:54:58,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:58" (1/1) ... [2020-10-14 08:54:59,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:54:59,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:54:59,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:54:59,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:54:59,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:58" (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 08:54:59,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:54:59,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:54:59,078 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:54:59,078 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:54:59,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:54:59,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:54:59,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:54:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:54:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:54:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:54:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:54:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:54:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:54:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:54:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:54:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:54:59,081 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:54:59,081 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:54:59,081 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 08:54:59,081 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:54:59,081 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:54:59,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:54:59,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:54:59,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:55:00,247 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:55:00,248 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:55:00,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:55:00 BoogieIcfgContainer [2020-10-14 08:55:00,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:55:00,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:55:00,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:55:00,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:55:00,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:54:57" (1/3) ... [2020-10-14 08:55:00,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157d46d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:55:00, skipping insertion in model container [2020-10-14 08:55:00,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:58" (2/3) ... [2020-10-14 08:55:00,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157d46d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:55:00, skipping insertion in model container [2020-10-14 08:55:00,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:55:00" (3/3) ... [2020-10-14 08:55:00,262 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-14 08:55:00,273 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:55:00,281 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:55:00,295 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:55:00,321 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:55:00,322 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:55:00,322 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:55:00,322 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:55:00,322 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:55:00,322 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:55:00,322 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:55:00,322 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:55:00,346 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-14 08:55:00,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 08:55:00,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:00,364 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] [2020-10-14 08:55:00,364 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:00,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:00,371 INFO L82 PathProgramCache]: Analyzing trace with hash 870041976, now seen corresponding path program 1 times [2020-10-14 08:55:00,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:00,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506260695] [2020-10-14 08:55:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:00,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:00,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:01,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:01,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:01,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:01,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:01,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:02,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:02,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:04,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:05,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:05,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 08:55:05,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:55:05,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 08:55:05,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:05,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:55:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 08:55:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:55:06,043 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:06,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:06,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:06,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:06,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:06,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:06,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:55:06,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:06,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:06,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:06,109 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 08:55:06,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506260695] [2020-10-14 08:55:06,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:06,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:55:06,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004104450] [2020-10-14 08:55:06,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:55:06,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:06,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:55:06,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:06,145 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 4 states. [2020-10-14 08:55:07,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:07,911 INFO L93 Difference]: Finished difference Result 808 states and 1303 transitions. [2020-10-14 08:55:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:55:07,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-14 08:55:07,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:07,950 INFO L225 Difference]: With dead ends: 808 [2020-10-14 08:55:07,952 INFO L226 Difference]: Without dead ends: 594 [2020-10-14 08:55:07,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:07,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-10-14 08:55:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 592. [2020-10-14 08:55:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-10-14 08:55:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 956 transitions. [2020-10-14 08:55:08,097 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 956 transitions. Word has length 123 [2020-10-14 08:55:08,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:08,098 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 956 transitions. [2020-10-14 08:55:08,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:55:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 956 transitions. [2020-10-14 08:55:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 08:55:08,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:08,104 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] [2020-10-14 08:55:08,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:55:08,105 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:08,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:08,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2078435800, now seen corresponding path program 1 times [2020-10-14 08:55:08,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:08,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026922852] [2020-10-14 08:55:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:08,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:08,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:08,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:08,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:08,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:09,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:11,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:13,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:13,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 08:55:13,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:55:13,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:55:13,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:13,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:55:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 08:55:13,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:13,480 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:13,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:13,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:13,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:13,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:13,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:13,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 08:55:13,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:13,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:13,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:13,566 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 08:55:13,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026922852] [2020-10-14 08:55:13,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:13,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:55:13,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741399508] [2020-10-14 08:55:13,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:55:13,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:13,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:55:13,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:13,570 INFO L87 Difference]: Start difference. First operand 592 states and 956 transitions. Second operand 4 states. [2020-10-14 08:55:13,774 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 08:55:15,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:15,384 INFO L93 Difference]: Finished difference Result 1421 states and 2277 transitions. [2020-10-14 08:55:15,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:55:15,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-14 08:55:15,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:15,393 INFO L225 Difference]: With dead ends: 1421 [2020-10-14 08:55:15,393 INFO L226 Difference]: Without dead ends: 1059 [2020-10-14 08:55:15,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:55:15,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2020-10-14 08:55:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1033. [2020-10-14 08:55:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1033 states. [2020-10-14 08:55:15,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1655 transitions. [2020-10-14 08:55:15,469 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1655 transitions. Word has length 123 [2020-10-14 08:55:15,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:15,471 INFO L479 AbstractCegarLoop]: Abstraction has 1033 states and 1655 transitions. [2020-10-14 08:55:15,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:55:15,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1655 transitions. [2020-10-14 08:55:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 08:55:15,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:15,477 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] [2020-10-14 08:55:15,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:55:15,478 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:15,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:15,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1503671732, now seen corresponding path program 1 times [2020-10-14 08:55:15,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:15,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732348459] [2020-10-14 08:55:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:15,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:15,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:15,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:15,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:15,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:15,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:15,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:15,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:16,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:17,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:20,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:20,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 08:55:20,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:55:20,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 08:55:20,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:20,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:55:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 08:55:20,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:20,793 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:20,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:20,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:20,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:20,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:20,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:20,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:55:20,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:20,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:20,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:20,846 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 08:55:20,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732348459] [2020-10-14 08:55:20,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:20,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:55:20,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954735122] [2020-10-14 08:55:20,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:55:20,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:20,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:55:20,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:20,849 INFO L87 Difference]: Start difference. First operand 1033 states and 1655 transitions. Second operand 4 states. [2020-10-14 08:55:21,026 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 08:55:22,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:22,855 INFO L93 Difference]: Finished difference Result 2651 states and 4223 transitions. [2020-10-14 08:55:22,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:55:22,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-14 08:55:22,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:22,867 INFO L225 Difference]: With dead ends: 2651 [2020-10-14 08:55:22,867 INFO L226 Difference]: Without dead ends: 1937 [2020-10-14 08:55:22,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:55:22,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2020-10-14 08:55:22,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1887. [2020-10-14 08:55:22,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-10-14 08:55:22,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 3001 transitions. [2020-10-14 08:55:22,958 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 3001 transitions. Word has length 125 [2020-10-14 08:55:22,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:22,958 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 3001 transitions. [2020-10-14 08:55:22,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:55:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 3001 transitions. [2020-10-14 08:55:22,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 08:55:22,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:22,965 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 08:55:22,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:55:22,965 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:22,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:22,966 INFO L82 PathProgramCache]: Analyzing trace with hash 2026405878, now seen corresponding path program 1 times [2020-10-14 08:55:22,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:22,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050362148] [2020-10-14 08:55:22,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:23,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:23,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:23,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:23,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:23,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:23,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:23,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:23,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:27,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:27,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 08:55:27,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:55:27,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:55:27,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:27,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 08:55:27,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 08:55:27,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:28,212 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:28,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:28,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:28,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:28,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:55:28,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:28,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:28,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:28,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:28,302 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 08:55:28,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050362148] [2020-10-14 08:55:28,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:28,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:55:28,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074072877] [2020-10-14 08:55:28,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:55:28,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:28,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:55:28,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:28,307 INFO L87 Difference]: Start difference. First operand 1887 states and 3001 transitions. Second operand 4 states. [2020-10-14 08:55:28,574 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 08:55:30,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:30,625 INFO L93 Difference]: Finished difference Result 4551 states and 7207 transitions. [2020-10-14 08:55:30,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:55:30,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-14 08:55:30,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:30,645 INFO L225 Difference]: With dead ends: 4551 [2020-10-14 08:55:30,645 INFO L226 Difference]: Without dead ends: 3397 [2020-10-14 08:55:30,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:55:30,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2020-10-14 08:55:30,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3299. [2020-10-14 08:55:30,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3299 states. [2020-10-14 08:55:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 5205 transitions. [2020-10-14 08:55:30,838 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 5205 transitions. Word has length 127 [2020-10-14 08:55:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:30,838 INFO L479 AbstractCegarLoop]: Abstraction has 3299 states and 5205 transitions. [2020-10-14 08:55:30,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:55:30,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 5205 transitions. [2020-10-14 08:55:30,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 08:55:30,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:30,848 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 08:55:30,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:55:30,848 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:30,849 INFO L82 PathProgramCache]: Analyzing trace with hash 164100481, now seen corresponding path program 1 times [2020-10-14 08:55:30,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:30,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578083044] [2020-10-14 08:55:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:30,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:30,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:30,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:31,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:31,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:31,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:31,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:31,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:32,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:35,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:35,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:35,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:35,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 08:55:35,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:55:35,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:55:35,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:35,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 08:55:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 08:55:35,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:36,092 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:36,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:36,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:36,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:36,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:36,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:55:36,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:36,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:36,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:36,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:36,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:36,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:55:36,145 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 08:55:36,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578083044] [2020-10-14 08:55:36,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:36,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:55:36,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183428498] [2020-10-14 08:55:36,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:55:36,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:36,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:55:36,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:36,149 INFO L87 Difference]: Start difference. First operand 3299 states and 5205 transitions. Second operand 4 states. [2020-10-14 08:55:38,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:38,163 INFO L93 Difference]: Finished difference Result 7607 states and 11975 transitions. [2020-10-14 08:55:38,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:55:38,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-14 08:55:38,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:38,195 INFO L225 Difference]: With dead ends: 7607 [2020-10-14 08:55:38,195 INFO L226 Difference]: Without dead ends: 5889 [2020-10-14 08:55:38,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:38,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5889 states. [2020-10-14 08:55:38,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5889 to 5887. [2020-10-14 08:55:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5887 states. [2020-10-14 08:55:38,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5887 states to 5887 states and 9241 transitions. [2020-10-14 08:55:38,499 INFO L78 Accepts]: Start accepts. Automaton has 5887 states and 9241 transitions. Word has length 129 [2020-10-14 08:55:38,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:38,500 INFO L479 AbstractCegarLoop]: Abstraction has 5887 states and 9241 transitions. [2020-10-14 08:55:38,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:55:38,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5887 states and 9241 transitions. [2020-10-14 08:55:38,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 08:55:38,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:38,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:55:38,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:55:38,521 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:38,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:38,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1495120932, now seen corresponding path program 1 times [2020-10-14 08:55:38,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:38,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267528510] [2020-10-14 08:55:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:38,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:38,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:38,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:38,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:38,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:38,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:38,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:39,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:40,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:43,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:43,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 08:55:43,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:55:43,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 08:55:43,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:43,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:43,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:43,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 08:55:43,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 08:55:43,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:43,779 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:43,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:43,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:43,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:43,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:43,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:43,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:55:43,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:43,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:43,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:43,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:43,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:43,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:43,831 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 08:55:43,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267528510] [2020-10-14 08:55:43,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:43,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:55:43,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452784542] [2020-10-14 08:55:43,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:55:43,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:43,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:55:43,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:43,834 INFO L87 Difference]: Start difference. First operand 5887 states and 9241 transitions. Second operand 4 states. [2020-10-14 08:55:44,027 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 08:55:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:46,149 INFO L93 Difference]: Finished difference Result 15695 states and 24559 transitions. [2020-10-14 08:55:46,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:55:46,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-14 08:55:46,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:46,197 INFO L225 Difference]: With dead ends: 15695 [2020-10-14 08:55:46,197 INFO L226 Difference]: Without dead ends: 11221 [2020-10-14 08:55:46,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:55:46,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11221 states. [2020-10-14 08:55:46,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11221 to 10867. [2020-10-14 08:55:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10867 states. [2020-10-14 08:55:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10867 states to 10867 states and 16917 transitions. [2020-10-14 08:55:46,737 INFO L78 Accepts]: Start accepts. Automaton has 10867 states and 16917 transitions. Word has length 129 [2020-10-14 08:55:46,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:46,737 INFO L479 AbstractCegarLoop]: Abstraction has 10867 states and 16917 transitions. [2020-10-14 08:55:46,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:55:46,737 INFO L276 IsEmpty]: Start isEmpty. Operand 10867 states and 16917 transitions. [2020-10-14 08:55:46,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 08:55:46,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:46,765 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] [2020-10-14 08:55:46,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:55:46,765 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:46,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:46,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1250862222, now seen corresponding path program 1 times [2020-10-14 08:55:46,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:46,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300530266] [2020-10-14 08:55:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:46,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:46,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:46,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:47,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:47,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:47,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:47,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:47,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:50,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:50,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:51,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:51,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 08:55:51,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:55:51,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 08:55:51,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:51,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 08:55:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 08:55:51,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:52,024 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:52,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:52,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:52,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:52,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:52,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:52,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:55:52,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:52,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:52,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:52,071 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 08:55:52,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300530266] [2020-10-14 08:55:52,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:52,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:55:52,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534687138] [2020-10-14 08:55:52,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:55:52,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:52,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:55:52,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:52,073 INFO L87 Difference]: Start difference. First operand 10867 states and 16917 transitions. Second operand 4 states. [2020-10-14 08:55:52,272 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:55:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:54,208 INFO L93 Difference]: Finished difference Result 27615 states and 42847 transitions. [2020-10-14 08:55:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:55:54,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-14 08:55:54,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:54,257 INFO L225 Difference]: With dead ends: 27615 [2020-10-14 08:55:54,257 INFO L226 Difference]: Without dead ends: 20093 [2020-10-14 08:55:54,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:55:54,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20093 states. [2020-10-14 08:55:55,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20093 to 19323. [2020-10-14 08:55:55,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19323 states. [2020-10-14 08:55:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19323 states to 19323 states and 29757 transitions. [2020-10-14 08:55:55,052 INFO L78 Accepts]: Start accepts. Automaton has 19323 states and 29757 transitions. Word has length 131 [2020-10-14 08:55:55,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:55,052 INFO L479 AbstractCegarLoop]: Abstraction has 19323 states and 29757 transitions. [2020-10-14 08:55:55,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:55:55,052 INFO L276 IsEmpty]: Start isEmpty. Operand 19323 states and 29757 transitions. [2020-10-14 08:55:55,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 08:55:55,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:55,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:55,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:55:55,091 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:55,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:55,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1097728176, now seen corresponding path program 1 times [2020-10-14 08:55:55,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:55,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495459689] [2020-10-14 08:55:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:55,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:55,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:55,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:55,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:55,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:55,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:56,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:56,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:00,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:00,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 08:56:00,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:56:00,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:56:00,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:00,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:00,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:56:00,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 08:56:00,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 08:56:00,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:56:00,319 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:56:00,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:00,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:00,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:00,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:00,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:00,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:56:00,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:00,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:00,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495459689] [2020-10-14 08:56:00,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:00,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:56:00,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586753201] [2020-10-14 08:56:00,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:56:00,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:00,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:56:00,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:56:00,357 INFO L87 Difference]: Start difference. First operand 19323 states and 29757 transitions. Second operand 4 states. [2020-10-14 08:56:03,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:03,085 INFO L93 Difference]: Finished difference Result 53189 states and 81903 transitions. [2020-10-14 08:56:03,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:56:03,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-14 08:56:03,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:03,145 INFO L225 Difference]: With dead ends: 53189 [2020-10-14 08:56:03,146 INFO L226 Difference]: Without dead ends: 36179 [2020-10-14 08:56:03,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:56:03,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36179 states. [2020-10-14 08:56:05,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36179 to 34353. [2020-10-14 08:56:05,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34353 states. [2020-10-14 08:56:05,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34353 states to 34353 states and 52541 transitions. [2020-10-14 08:56:05,300 INFO L78 Accepts]: Start accepts. Automaton has 34353 states and 52541 transitions. Word has length 133 [2020-10-14 08:56:05,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:05,300 INFO L479 AbstractCegarLoop]: Abstraction has 34353 states and 52541 transitions. [2020-10-14 08:56:05,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:56:05,301 INFO L276 IsEmpty]: Start isEmpty. Operand 34353 states and 52541 transitions. [2020-10-14 08:56:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 08:56:05,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:05,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:05,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:56:05,350 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:05,351 INFO L82 PathProgramCache]: Analyzing trace with hash 455355857, now seen corresponding path program 1 times [2020-10-14 08:56:05,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:05,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639096819] [2020-10-14 08:56:05,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:05,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:05,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:05,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:06,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:10,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:10,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 08:56:10,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:56:10,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:56:10,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:10,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:56:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 08:56:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 08:56:10,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:10,577 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:56:10,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:10,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:10,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:10,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:10,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:10,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:56:10,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:10,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:10,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:10,620 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 08:56:10,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639096819] [2020-10-14 08:56:10,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:10,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:56:10,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714859848] [2020-10-14 08:56:10,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:56:10,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:10,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:56:10,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:56:10,622 INFO L87 Difference]: Start difference. First operand 34353 states and 52541 transitions. Second operand 4 states. [2020-10-14 08:56:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:13,594 INFO L93 Difference]: Finished difference Result 55765 states and 85343 transitions. [2020-10-14 08:56:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:56:13,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-14 08:56:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:13,640 INFO L225 Difference]: With dead ends: 55765 [2020-10-14 08:56:13,640 INFO L226 Difference]: Without dead ends: 34291 [2020-10-14 08:56:13,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:56:13,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34291 states. [2020-10-14 08:56:14,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34291 to 34289. [2020-10-14 08:56:14,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34289 states. [2020-10-14 08:56:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34289 states to 34289 states and 52093 transitions. [2020-10-14 08:56:14,863 INFO L78 Accepts]: Start accepts. Automaton has 34289 states and 52093 transitions. Word has length 135 [2020-10-14 08:56:14,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:14,863 INFO L479 AbstractCegarLoop]: Abstraction has 34289 states and 52093 transitions. [2020-10-14 08:56:14,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:56:14,864 INFO L276 IsEmpty]: Start isEmpty. Operand 34289 states and 52093 transitions. [2020-10-14 08:56:14,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 08:56:14,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:14,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:14,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:56:14,901 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:14,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:14,901 INFO L82 PathProgramCache]: Analyzing trace with hash 817821241, now seen corresponding path program 1 times [2020-10-14 08:56:14,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:14,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294360078] [2020-10-14 08:56:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:14,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:15,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:15,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:19,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:19,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 08:56:19,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:56:19,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4276 [2020-10-14 08:56:19,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:19,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:56:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 08:56:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:56:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:19,422 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:56:19,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:19,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:19,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:19,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:19,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:56:19,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:19,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:19,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:19,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:19,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:19,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:19,447 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 08:56:19,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294360078] [2020-10-14 08:56:19,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:19,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:56:19,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69695356] [2020-10-14 08:56:19,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:56:19,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:19,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:56:19,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:56:19,451 INFO L87 Difference]: Start difference. First operand 34289 states and 52093 transitions. Second operand 5 states. [2020-10-14 08:56:21,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:21,799 INFO L93 Difference]: Finished difference Result 57331 states and 86654 transitions. [2020-10-14 08:56:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:56:21,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-14 08:56:21,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:21,858 INFO L225 Difference]: With dead ends: 57331 [2020-10-14 08:56:21,859 INFO L226 Difference]: Without dead ends: 34289 [2020-10-14 08:56:21,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:56:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34289 states. [2020-10-14 08:56:23,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34289 to 34289. [2020-10-14 08:56:23,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34289 states. [2020-10-14 08:56:23,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34289 states to 34289 states and 51325 transitions. [2020-10-14 08:56:23,417 INFO L78 Accepts]: Start accepts. Automaton has 34289 states and 51325 transitions. Word has length 135 [2020-10-14 08:56:23,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:23,418 INFO L479 AbstractCegarLoop]: Abstraction has 34289 states and 51325 transitions. [2020-10-14 08:56:23,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:56:23,418 INFO L276 IsEmpty]: Start isEmpty. Operand 34289 states and 51325 transitions. [2020-10-14 08:56:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 08:56:23,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:23,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:23,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:56:23,464 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:23,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:23,464 INFO L82 PathProgramCache]: Analyzing trace with hash 123092966, now seen corresponding path program 1 times [2020-10-14 08:56:23,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:23,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534758010] [2020-10-14 08:56:23,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:23,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:23,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:23,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:23,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:23,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:23,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:23,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:27,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:28,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:28,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 08:56:28,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:56:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:56:28,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:28,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:28,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:56:28,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 08:56:28,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 08:56:28,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:28,671 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:56:28,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:28,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:28,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:28,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:28,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:28,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:56:28,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:28,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:28,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:28,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:28,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:28,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:28,707 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 08:56:28,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534758010] [2020-10-14 08:56:28,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:28,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:56:28,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761044792] [2020-10-14 08:56:28,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:56:28,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:28,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:56:28,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:56:28,709 INFO L87 Difference]: Start difference. First operand 34289 states and 51325 transitions. Second operand 4 states. [2020-10-14 08:56:28,912 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 08:56:32,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:32,380 INFO L93 Difference]: Finished difference Result 72037 states and 106467 transitions. [2020-10-14 08:56:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:56:32,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-14 08:56:32,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:32,445 INFO L225 Difference]: With dead ends: 72037 [2020-10-14 08:56:32,446 INFO L226 Difference]: Without dead ends: 60131 [2020-10-14 08:56:32,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:56:32,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60131 states. [2020-10-14 08:56:34,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60131 to 52049. [2020-10-14 08:56:34,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52049 states. [2020-10-14 08:56:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52049 states to 52049 states and 76545 transitions. [2020-10-14 08:56:34,535 INFO L78 Accepts]: Start accepts. Automaton has 52049 states and 76545 transitions. Word has length 137 [2020-10-14 08:56:34,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:34,535 INFO L479 AbstractCegarLoop]: Abstraction has 52049 states and 76545 transitions. [2020-10-14 08:56:34,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:56:34,536 INFO L276 IsEmpty]: Start isEmpty. Operand 52049 states and 76545 transitions. [2020-10-14 08:56:34,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 08:56:34,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:34,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:34,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:56:34,588 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:34,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:34,588 INFO L82 PathProgramCache]: Analyzing trace with hash -998035622, now seen corresponding path program 1 times [2020-10-14 08:56:34,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:34,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212443032] [2020-10-14 08:56:34,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:34,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:34,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:34,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:34,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:34,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:35,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:35,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:39,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:39,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 08:56:39,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:56:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 08:56:39,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:39,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:56:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 08:56:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 08:56:39,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:39,814 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:56:39,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:39,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:39,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:39,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:39,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:39,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:56:39,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:39,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:39,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:39,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:39,856 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 08:56:39,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212443032] [2020-10-14 08:56:39,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:39,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:56:39,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158946589] [2020-10-14 08:56:39,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:56:39,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:39,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:56:39,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:56:39,859 INFO L87 Difference]: Start difference. First operand 52049 states and 76545 transitions. Second operand 4 states. [2020-10-14 08:56:40,053 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:56:44,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:44,764 INFO L93 Difference]: Finished difference Result 127787 states and 186914 transitions. [2020-10-14 08:56:44,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:56:44,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-14 08:56:44,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:44,858 INFO L225 Difference]: With dead ends: 127787 [2020-10-14 08:56:44,858 INFO L226 Difference]: Without dead ends: 76990 [2020-10-14 08:56:44,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:56:44,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76990 states. [2020-10-14 08:56:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76990 to 76507. [2020-10-14 08:56:47,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76507 states. [2020-10-14 08:56:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76507 states to 76507 states and 110070 transitions. [2020-10-14 08:56:47,996 INFO L78 Accepts]: Start accepts. Automaton has 76507 states and 110070 transitions. Word has length 139 [2020-10-14 08:56:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:47,997 INFO L479 AbstractCegarLoop]: Abstraction has 76507 states and 110070 transitions. [2020-10-14 08:56:47,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:56:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 76507 states and 110070 transitions. [2020-10-14 08:56:48,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 08:56:48,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:48,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:48,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:56:48,074 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:48,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:48,074 INFO L82 PathProgramCache]: Analyzing trace with hash 722521987, now seen corresponding path program 1 times [2020-10-14 08:56:48,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:48,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904229695] [2020-10-14 08:56:48,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:48,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:48,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:48,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:48,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:53,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:53,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 08:56:53,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:56:53,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 08:56:53,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:53,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:53,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:56:53,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 08:56:53,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 08:56:53,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:53,289 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:56:53,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:53,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:53,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:53,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:53,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:53,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:56:53,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:53,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:53,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:53,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:53,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:53,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:53,324 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 08:56:53,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904229695] [2020-10-14 08:56:53,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:53,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:56:53,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942548219] [2020-10-14 08:56:53,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:56:53,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:53,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:56:53,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:56:53,326 INFO L87 Difference]: Start difference. First operand 76507 states and 110070 transitions. Second operand 4 states. [2020-10-14 08:56:57,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:57,891 INFO L93 Difference]: Finished difference Result 152555 states and 219104 transitions. [2020-10-14 08:56:57,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:56:57,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-14 08:56:57,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:57,988 INFO L225 Difference]: With dead ends: 152555 [2020-10-14 08:56:57,988 INFO L226 Difference]: Without dead ends: 89929 [2020-10-14 08:56:58,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:56:58,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89929 states. [2020-10-14 08:57:01,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89929 to 89924. [2020-10-14 08:57:01,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89924 states. [2020-10-14 08:57:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89924 states to 89924 states and 128674 transitions. [2020-10-14 08:57:01,677 INFO L78 Accepts]: Start accepts. Automaton has 89924 states and 128674 transitions. Word has length 139 [2020-10-14 08:57:01,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:01,677 INFO L479 AbstractCegarLoop]: Abstraction has 89924 states and 128674 transitions. [2020-10-14 08:57:01,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:57:01,677 INFO L276 IsEmpty]: Start isEmpty. Operand 89924 states and 128674 transitions. [2020-10-14 08:57:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 08:57:01,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:01,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:01,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:57:01,753 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:01,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:01,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1573229050, now seen corresponding path program 1 times [2020-10-14 08:57:01,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:01,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663524998] [2020-10-14 08:57:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:01,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:01,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:01,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:02,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:06,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:06,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 08:57:06,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:57:06,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 08:57:06,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:06,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:57:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 08:57:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:57:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:06,966 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:57:06,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:06,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:06,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:06,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:06,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:57:06,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:06,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:06,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:06,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:06,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:06,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:06,993 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 08:57:06,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663524998] [2020-10-14 08:57:06,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:06,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:57:06,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507505982] [2020-10-14 08:57:06,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:57:06,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:06,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:57:06,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:57:06,994 INFO L87 Difference]: Start difference. First operand 89924 states and 128674 transitions. Second operand 4 states. [2020-10-14 08:57:12,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:12,305 INFO L93 Difference]: Finished difference Result 171332 states and 245088 transitions. [2020-10-14 08:57:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:57:12,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-10-14 08:57:12,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:12,415 INFO L225 Difference]: With dead ends: 171332 [2020-10-14 08:57:12,415 INFO L226 Difference]: Without dead ends: 96310 [2020-10-14 08:57:12,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:57:12,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96310 states. [2020-10-14 08:57:18,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96310 to 95212. [2020-10-14 08:57:18,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95212 states. [2020-10-14 08:57:18,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95212 states to 95212 states and 135046 transitions. [2020-10-14 08:57:18,610 INFO L78 Accepts]: Start accepts. Automaton has 95212 states and 135046 transitions. Word has length 141 [2020-10-14 08:57:18,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:18,610 INFO L479 AbstractCegarLoop]: Abstraction has 95212 states and 135046 transitions. [2020-10-14 08:57:18,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:57:18,611 INFO L276 IsEmpty]: Start isEmpty. Operand 95212 states and 135046 transitions. [2020-10-14 08:57:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 08:57:18,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:18,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:18,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:57:18,696 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:18,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:18,697 INFO L82 PathProgramCache]: Analyzing trace with hash 56169871, now seen corresponding path program 1 times [2020-10-14 08:57:18,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:18,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585614993] [2020-10-14 08:57:18,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:18,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:18,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:18,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:18,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:18,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:23,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:23,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 08:57:23,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:57:23,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 08:57:23,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:23,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:23,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:57:23,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 08:57:23,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 08:57:23,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:23,983 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:57:23,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:23,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:23,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:23,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:23,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:23,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:57:23,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:23,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:23,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:24,028 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 08:57:24,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585614993] [2020-10-14 08:57:24,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:24,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:57:24,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581062297] [2020-10-14 08:57:24,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:57:24,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:24,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:57:24,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:57:24,030 INFO L87 Difference]: Start difference. First operand 95212 states and 135046 transitions. Second operand 5 states. [2020-10-14 08:57:24,248 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:57:34,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:34,968 INFO L93 Difference]: Finished difference Result 258866 states and 367563 transitions. [2020-10-14 08:57:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:57:34,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 08:57:34,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:35,181 INFO L225 Difference]: With dead ends: 258866 [2020-10-14 08:57:35,182 INFO L226 Difference]: Without dead ends: 187442 [2020-10-14 08:57:35,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:57:35,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187442 states. [2020-10-14 08:57:45,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187442 to 162651. [2020-10-14 08:57:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162651 states. [2020-10-14 08:57:45,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162651 states to 162651 states and 231221 transitions. [2020-10-14 08:57:45,929 INFO L78 Accepts]: Start accepts. Automaton has 162651 states and 231221 transitions. Word has length 142 [2020-10-14 08:57:45,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:45,929 INFO L479 AbstractCegarLoop]: Abstraction has 162651 states and 231221 transitions. [2020-10-14 08:57:45,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:57:45,929 INFO L276 IsEmpty]: Start isEmpty. Operand 162651 states and 231221 transitions. [2020-10-14 08:57:46,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 08:57:46,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:46,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:46,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:57:46,090 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:46,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:46,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1776727480, now seen corresponding path program 1 times [2020-10-14 08:57:46,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:46,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423361247] [2020-10-14 08:57:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:46,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:46,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:46,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:46,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:51,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:51,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 08:57:51,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:57:51,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 08:57:51,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:51,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:57:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 08:57:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 08:57:51,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:51,323 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:57:51,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:51,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:51,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:51,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:51,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:51,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:57:51,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:51,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:51,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:51,352 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 08:57:51,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423361247] [2020-10-14 08:57:51,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:51,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:57:51,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8566035] [2020-10-14 08:57:51,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:57:51,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:51,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:57:51,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:57:51,355 INFO L87 Difference]: Start difference. First operand 162651 states and 231221 transitions. Second operand 6 states. [2020-10-14 08:58:08,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:08,198 INFO L93 Difference]: Finished difference Result 417984 states and 597056 transitions. [2020-10-14 08:58:08,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:58:08,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-10-14 08:58:08,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:08,549 INFO L225 Difference]: With dead ends: 417984 [2020-10-14 08:58:08,549 INFO L226 Difference]: Without dead ends: 285800 [2020-10-14 08:58:08,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:58:08,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285800 states. [2020-10-14 08:58:22,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285800 to 161035. [2020-10-14 08:58:22,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161035 states. [2020-10-14 08:58:23,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161035 states to 161035 states and 227937 transitions. [2020-10-14 08:58:23,338 INFO L78 Accepts]: Start accepts. Automaton has 161035 states and 227937 transitions. Word has length 142 [2020-10-14 08:58:23,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:23,338 INFO L479 AbstractCegarLoop]: Abstraction has 161035 states and 227937 transitions. [2020-10-14 08:58:23,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:58:23,338 INFO L276 IsEmpty]: Start isEmpty. Operand 161035 states and 227937 transitions. [2020-10-14 08:58:23,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 08:58:23,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:23,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:58:23,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:58:23,479 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:23,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:23,479 INFO L82 PathProgramCache]: Analyzing trace with hash -947741278, now seen corresponding path program 1 times [2020-10-14 08:58:23,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:23,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312007028] [2020-10-14 08:58:23,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:23,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:24,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking...