/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.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:40:08,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:40:08,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:40:08,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:40:08,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:40:08,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:40:08,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:40:08,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:40:08,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:40:08,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:40:08,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:40:08,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:40:08,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:40:08,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:40:08,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:40:08,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:40:08,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:40:08,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:40:08,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:40:08,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:40:08,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:40:08,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:40:08,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:40:08,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:40:08,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:40:08,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:40:08,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:40:08,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:40:08,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:40:08,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:40:08,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:40:08,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:40:08,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:40:08,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:40:08,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:40:08,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:40:08,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:40:08,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:40:08,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:40:08,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:40:08,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:40:08,490 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 08:40:08,544 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:40:08,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:40:08,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:40:08,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:40:08,548 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:40:08,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:40:08,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:40:08,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:40:08,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:40:08,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:40:08,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:40:08,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:40:08,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:40:08,550 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:40:08,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:40:08,551 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:40:08,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:40:08,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:40:08,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:40:08,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:40:08,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:40:08,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:40:08,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:40:08,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:40:08,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:40:08,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:40:08,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:40:08,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:40:08,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:40:08,554 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 08:40:08,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:40:08,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:40:08,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:40:08,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:40:08,902 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:40:08,903 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:40:08,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7530ffaad/15773c17adaf4c18b865e7b4aa404ba1/FLAGce3d45510 [2020-10-14 08:40:09,507 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:40:09,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:40:09,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7530ffaad/15773c17adaf4c18b865e7b4aa404ba1/FLAGce3d45510 [2020-10-14 08:40:09,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7530ffaad/15773c17adaf4c18b865e7b4aa404ba1 [2020-10-14 08:40:09,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:40:09,802 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:40:09,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:40:09,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:40:09,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:40:09,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:40:09" (1/1) ... [2020-10-14 08:40:09,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e093328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:09, skipping insertion in model container [2020-10-14 08:40:09,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:40:09" (1/1) ... [2020-10-14 08:40:09,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:40:09,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:40:10,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:40:10,557 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:40:10,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:40:10,699 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:40:10,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:10 WrapperNode [2020-10-14 08:40:10,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:40:10,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:40:10,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:40:10,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:40:10,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:10" (1/1) ... [2020-10-14 08:40:10,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:10" (1/1) ... [2020-10-14 08:40:10,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:10" (1/1) ... [2020-10-14 08:40:10,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:10" (1/1) ... [2020-10-14 08:40:10,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:10" (1/1) ... [2020-10-14 08:40:10,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:10" (1/1) ... [2020-10-14 08:40:10,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:10" (1/1) ... [2020-10-14 08:40:10,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:40:10,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:40:10,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:40:10,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:40:10,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:10" (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 08:40:10,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:40:10,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:40:10,912 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:40:10,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:40:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:40:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:40:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:40:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:40:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:40:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:40:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:40:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:40:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:40:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:40:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:40:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:40:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:40:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:40:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:40:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:40:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:40:12,076 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:40:12,077 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:40:12,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:40:12 BoogieIcfgContainer [2020-10-14 08:40:12,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:40:12,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:40:12,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:40:12,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:40:12,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:40:09" (1/3) ... [2020-10-14 08:40:12,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2528a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:40:12, skipping insertion in model container [2020-10-14 08:40:12,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:40:10" (2/3) ... [2020-10-14 08:40:12,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2528a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:40:12, skipping insertion in model container [2020-10-14 08:40:12,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:40:12" (3/3) ... [2020-10-14 08:40:12,092 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:40:12,103 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:40:12,112 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-14 08:40:12,127 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-14 08:40:12,155 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:40:12,155 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:40:12,156 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:40:12,156 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:40:12,156 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:40:12,156 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:40:12,156 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:40:12,156 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:40:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-14 08:40:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 08:40:12,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:12,195 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] [2020-10-14 08:40:12,196 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:12,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1846019956, now seen corresponding path program 1 times [2020-10-14 08:40:12,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:12,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745237994] [2020-10-14 08:40:12,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:12,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:12,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:12,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:13,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:13,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:13,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:17,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:17,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:17,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:17,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 08:40:17,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:40:17,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 08:40:17,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:17,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:40:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:40:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 08:40:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 08:40:17,863 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:40:17,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:17,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:17,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:17,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:17,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:17,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:40:17,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:17,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:17,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:40:17,903 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 08:40:17,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745237994] [2020-10-14 08:40:17,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:17,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:40:17,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773100313] [2020-10-14 08:40:17,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:40:17,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:17,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:40:17,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:40:17,932 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 7 states. [2020-10-14 08:40:18,151 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:40:19,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:19,770 INFO L93 Difference]: Finished difference Result 693 states and 1116 transitions. [2020-10-14 08:40:19,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 08:40:19,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-14 08:40:19,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:19,808 INFO L225 Difference]: With dead ends: 693 [2020-10-14 08:40:19,808 INFO L226 Difference]: Without dead ends: 548 [2020-10-14 08:40:19,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:40:19,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-10-14 08:40:19,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 259. [2020-10-14 08:40:19,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-14 08:40:19,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 330 transitions. [2020-10-14 08:40:19,944 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 330 transitions. Word has length 50 [2020-10-14 08:40:19,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:19,944 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 330 transitions. [2020-10-14 08:40:19,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:40:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 330 transitions. [2020-10-14 08:40:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 08:40:19,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:19,955 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] [2020-10-14 08:40:19,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:40:19,956 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:19,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1477961815, now seen corresponding path program 1 times [2020-10-14 08:40:19,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:19,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108758008] [2020-10-14 08:40:19,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:20,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:20,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:20,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:20,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:20,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:20,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:21,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:21,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:22,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:22,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:22,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:22,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:23,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:23,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:23,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:23,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:24,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:24,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:24,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 08:40:24,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 08:40:24,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:40:24,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:24,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:40:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:40:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 08:40:25,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:40:25,223 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:40:25,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:25,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:25,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:25,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:25,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:25,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 08:40:25,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:25,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:25,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:40:25,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:25,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:40:25,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:40:25,299 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 08:40:25,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108758008] [2020-10-14 08:40:25,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:25,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:40:25,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005693647] [2020-10-14 08:40:25,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:40:25,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:25,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:40:25,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:40:25,309 INFO L87 Difference]: Start difference. First operand 259 states and 330 transitions. Second operand 6 states. [2020-10-14 08:40:25,553 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:40:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:26,239 INFO L93 Difference]: Finished difference Result 389 states and 514 transitions. [2020-10-14 08:40:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:40:26,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-14 08:40:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:26,242 INFO L225 Difference]: With dead ends: 389 [2020-10-14 08:40:26,242 INFO L226 Difference]: Without dead ends: 234 [2020-10-14 08:40:26,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:40:26,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-14 08:40:26,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-14 08:40:26,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-14 08:40:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 299 transitions. [2020-10-14 08:40:26,274 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 299 transitions. Word has length 50 [2020-10-14 08:40:26,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:26,274 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 299 transitions. [2020-10-14 08:40:26,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:40:26,275 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 299 transitions. [2020-10-14 08:40:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 08:40:26,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:26,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:26,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:40:26,284 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:26,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:26,285 INFO L82 PathProgramCache]: Analyzing trace with hash -870789754, now seen corresponding path program 1 times [2020-10-14 08:40:26,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:26,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925533154] [2020-10-14 08:40:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:26,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:26,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:26,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:26,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:26,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:26,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:28,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:31,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:31,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 08:40:31,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:40:31,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:40:31,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:31,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:40:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 08:40:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 08:40:31,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:40:31,537 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:40:31,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:31,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:31,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:31,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:31,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:31,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:40:31,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:31,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:31,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:31,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:40:31,567 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 08:40:31,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925533154] [2020-10-14 08:40:31,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:31,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:40:31,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299384573] [2020-10-14 08:40:31,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:40:31,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:31,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:40:31,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:40:31,570 INFO L87 Difference]: Start difference. First operand 234 states and 299 transitions. Second operand 6 states. [2020-10-14 08:40:31,723 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 08:40:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:33,165 INFO L93 Difference]: Finished difference Result 1171 states and 1640 transitions. [2020-10-14 08:40:33,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:40:33,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-14 08:40:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:33,182 INFO L225 Difference]: With dead ends: 1171 [2020-10-14 08:40:33,182 INFO L226 Difference]: Without dead ends: 1055 [2020-10-14 08:40:33,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:40:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-10-14 08:40:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 559. [2020-10-14 08:40:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-14 08:40:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 781 transitions. [2020-10-14 08:40:33,235 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 781 transitions. Word has length 51 [2020-10-14 08:40:33,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:33,236 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 781 transitions. [2020-10-14 08:40:33,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:40:33,236 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 781 transitions. [2020-10-14 08:40:33,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 08:40:33,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:33,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:33,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:40:33,238 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:33,238 INFO L82 PathProgramCache]: Analyzing trace with hash -502731613, now seen corresponding path program 1 times [2020-10-14 08:40:33,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:33,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133533817] [2020-10-14 08:40:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:33,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:33,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:33,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:33,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:33,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:36,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:36,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:36,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:36,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:37,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:37,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:37,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:37,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:37,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:37,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:38,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:38,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 08:40:38,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:40:38,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:40:38,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:38,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:40:38,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:40:38,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 08:40:38,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:38,449 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:40:38,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:38,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:38,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:38,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:38,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:38,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:40:38,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:38,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:40:38,484 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 08:40:38,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133533817] [2020-10-14 08:40:38,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:38,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:40:38,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033426428] [2020-10-14 08:40:38,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:40:38,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:38,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:40:38,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:40:38,488 INFO L87 Difference]: Start difference. First operand 559 states and 781 transitions. Second operand 7 states. [2020-10-14 08:40:38,662 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 08:40:39,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:39,497 INFO L93 Difference]: Finished difference Result 979 states and 1392 transitions. [2020-10-14 08:40:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:40:39,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-14 08:40:39,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:39,502 INFO L225 Difference]: With dead ends: 979 [2020-10-14 08:40:39,502 INFO L226 Difference]: Without dead ends: 583 [2020-10-14 08:40:39,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:40:39,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-10-14 08:40:39,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 559. [2020-10-14 08:40:39,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-14 08:40:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 779 transitions. [2020-10-14 08:40:39,545 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 779 transitions. Word has length 51 [2020-10-14 08:40:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:39,546 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 779 transitions. [2020-10-14 08:40:39,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:40:39,546 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 779 transitions. [2020-10-14 08:40:39,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 08:40:39,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:39,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:39,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:40:39,548 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:39,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:39,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1859329898, now seen corresponding path program 1 times [2020-10-14 08:40:39,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:39,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643569277] [2020-10-14 08:40:39,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:39,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:39,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:39,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:40,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:40,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:40,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:40,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:40,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:41,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:41,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:42,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:43,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:44,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:44,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 08:40:44,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:40:44,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:40:44,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:44,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:40:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:40:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 08:40:44,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:44,753 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:40:44,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:44,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:44,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:44,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:44,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 08:40:44,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:44,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:40:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:40:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:40:44,799 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 08:40:44,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643569277] [2020-10-14 08:40:44,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:44,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:40:44,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431644973] [2020-10-14 08:40:44,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:40:44,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:44,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:40:44,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:40:44,802 INFO L87 Difference]: Start difference. First operand 559 states and 779 transitions. Second operand 6 states. [2020-10-14 08:40:44,973 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 08:40:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:45,657 INFO L93 Difference]: Finished difference Result 1474 states and 2099 transitions. [2020-10-14 08:40:45,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:40:45,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-14 08:40:45,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:45,664 INFO L225 Difference]: With dead ends: 1474 [2020-10-14 08:40:45,664 INFO L226 Difference]: Without dead ends: 963 [2020-10-14 08:40:45,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:40:45,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-10-14 08:40:45,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 945. [2020-10-14 08:40:45,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2020-10-14 08:40:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1347 transitions. [2020-10-14 08:40:45,747 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1347 transitions. Word has length 52 [2020-10-14 08:40:45,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:45,750 INFO L479 AbstractCegarLoop]: Abstraction has 945 states and 1347 transitions. [2020-10-14 08:40:45,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:40:45,750 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1347 transitions. [2020-10-14 08:40:45,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 08:40:45,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:45,753 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] [2020-10-14 08:40:45,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:40:45,754 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:45,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:45,754 INFO L82 PathProgramCache]: Analyzing trace with hash -2019662876, now seen corresponding path program 1 times [2020-10-14 08:40:45,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:45,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100516885] [2020-10-14 08:40:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:45,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:47,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:47,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:47,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:47,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:48,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:49,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:49,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:50,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:50,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:50,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:50,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:50,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 08:40:50,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 08:40:50,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:40:50,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:50,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:40:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:40:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 08:40:50,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:51,012 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:40:51,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:51,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:51,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:51,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:51,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:51,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:40:51,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:51,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:51,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:40:51,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:51,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:40:51,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:40:51,050 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 08:40:51,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100516885] [2020-10-14 08:40:51,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:51,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:40:51,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968187073] [2020-10-14 08:40:51,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:40:51,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:51,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:40:51,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:40:51,055 INFO L87 Difference]: Start difference. First operand 945 states and 1347 transitions. Second operand 10 states. [2020-10-14 08:40:51,243 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 08:40:52,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:52,467 INFO L93 Difference]: Finished difference Result 2010 states and 2948 transitions. [2020-10-14 08:40:52,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 08:40:52,467 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-14 08:40:52,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:52,474 INFO L225 Difference]: With dead ends: 2010 [2020-10-14 08:40:52,474 INFO L226 Difference]: Without dead ends: 1224 [2020-10-14 08:40:52,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-14 08:40:52,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2020-10-14 08:40:52,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 520. [2020-10-14 08:40:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-10-14 08:40:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 725 transitions. [2020-10-14 08:40:52,521 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 725 transitions. Word has length 53 [2020-10-14 08:40:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:52,521 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 725 transitions. [2020-10-14 08:40:52,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:40:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 725 transitions. [2020-10-14 08:40:52,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 08:40:52,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:52,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:52,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:40:52,523 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:52,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:52,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1462230076, now seen corresponding path program 1 times [2020-10-14 08:40:52,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:52,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956905956] [2020-10-14 08:40:52,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:52,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:52,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:52,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:52,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:53,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:53,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:53,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:53,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:53,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:53,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:54,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:54,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:54,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:55,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:55,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:55,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:56,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:56,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:56,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:56,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:57,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:57,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 08:40:57,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 08:40:57,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:40:57,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:57,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:40:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:40:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 08:40:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:57,779 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:40:57,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:57,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:57,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:57,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:57,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:57,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:40:57,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:57,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:40:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:40:57,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:40:57,832 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 08:40:57,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956905956] [2020-10-14 08:40:57,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:57,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:40:57,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190798167] [2020-10-14 08:40:57,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:40:57,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:57,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:40:57,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:40:57,836 INFO L87 Difference]: Start difference. First operand 520 states and 725 transitions. Second operand 10 states. [2020-10-14 08:40:58,037 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 08:40:59,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:59,361 INFO L93 Difference]: Finished difference Result 1843 states and 2743 transitions. [2020-10-14 08:40:59,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 08:40:59,361 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-14 08:40:59,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:59,371 INFO L225 Difference]: With dead ends: 1843 [2020-10-14 08:40:59,372 INFO L226 Difference]: Without dead ends: 1838 [2020-10-14 08:40:59,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-14 08:40:59,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-10-14 08:40:59,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 520. [2020-10-14 08:40:59,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-10-14 08:40:59,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 724 transitions. [2020-10-14 08:40:59,426 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 724 transitions. Word has length 53 [2020-10-14 08:40:59,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:59,427 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 724 transitions. [2020-10-14 08:40:59,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:40:59,427 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 724 transitions. [2020-10-14 08:40:59,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 08:40:59,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:59,428 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] [2020-10-14 08:40:59,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:40:59,428 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:59,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:59,429 INFO L82 PathProgramCache]: Analyzing trace with hash -392381215, now seen corresponding path program 1 times [2020-10-14 08:40:59,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:59,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104204665] [2020-10-14 08:40:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:59,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:01,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:01,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:01,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:02,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:02,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:02,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:03,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:03,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:03,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:04,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:04,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 08:41:04,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 08:41:04,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:41:04,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:04,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:04,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:41:04,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:41:04,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 08:41:04,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:04,720 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:04,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:04,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:04,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:04,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:04,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:04,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:41:04,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:04,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:04,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:04,757 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 08:41:04,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104204665] [2020-10-14 08:41:04,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:04,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:04,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569000292] [2020-10-14 08:41:04,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:41:04,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:04,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:41:04,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:41:04,760 INFO L87 Difference]: Start difference. First operand 520 states and 724 transitions. Second operand 9 states. [2020-10-14 08:41:04,945 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:41:06,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:06,112 INFO L93 Difference]: Finished difference Result 1022 states and 1485 transitions. [2020-10-14 08:41:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:41:06,112 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-14 08:41:06,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:06,116 INFO L225 Difference]: With dead ends: 1022 [2020-10-14 08:41:06,116 INFO L226 Difference]: Without dead ends: 699 [2020-10-14 08:41:06,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:41:06,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2020-10-14 08:41:06,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 519. [2020-10-14 08:41:06,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2020-10-14 08:41:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 722 transitions. [2020-10-14 08:41:06,164 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 722 transitions. Word has length 55 [2020-10-14 08:41:06,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:06,164 INFO L479 AbstractCegarLoop]: Abstraction has 519 states and 722 transitions. [2020-10-14 08:41:06,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:41:06,165 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 722 transitions. [2020-10-14 08:41:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 08:41:06,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:06,165 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] [2020-10-14 08:41:06,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:41:06,166 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:06,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:06,166 INFO L82 PathProgramCache]: Analyzing trace with hash -836854007, now seen corresponding path program 1 times [2020-10-14 08:41:06,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:06,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507030069] [2020-10-14 08:41:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:06,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:06,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:06,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:06,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:06,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:07,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:07,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:08,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:08,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 08:41:08,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:41:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2620 [2020-10-14 08:41:08,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:08,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:41:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:41:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:41:08,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:08,998 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:08,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:09,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:09,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:09,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:09,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:09,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:41:09,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:09,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:09,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:09,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:09,025 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 08:41:09,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507030069] [2020-10-14 08:41:09,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:09,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:09,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389052835] [2020-10-14 08:41:09,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:41:09,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:09,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:41:09,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:41:09,027 INFO L87 Difference]: Start difference. First operand 519 states and 722 transitions. Second operand 9 states. [2020-10-14 08:41:09,184 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:41:09,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:09,950 INFO L93 Difference]: Finished difference Result 867 states and 1243 transitions. [2020-10-14 08:41:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:41:09,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-14 08:41:09,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:09,955 INFO L225 Difference]: With dead ends: 867 [2020-10-14 08:41:09,955 INFO L226 Difference]: Without dead ends: 857 [2020-10-14 08:41:09,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 08:41:09,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2020-10-14 08:41:10,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 509. [2020-10-14 08:41:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-14 08:41:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 711 transitions. [2020-10-14 08:41:10,010 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 711 transitions. Word has length 55 [2020-10-14 08:41:10,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:10,010 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 711 transitions. [2020-10-14 08:41:10,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:41:10,011 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 711 transitions. [2020-10-14 08:41:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 08:41:10,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:10,012 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] [2020-10-14 08:41:10,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:41:10,012 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:10,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:10,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1891360352, now seen corresponding path program 1 times [2020-10-14 08:41:10,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:10,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894999835] [2020-10-14 08:41:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:10,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:10,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:10,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:10,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:10,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:10,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:10,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:10,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:12,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:12,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 08:41:12,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:41:12,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2044 [2020-10-14 08:41:12,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:12,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:12,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:41:12,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:41:12,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 08:41:12,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:12,270 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:12,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:12,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:12,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:12,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:12,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:12,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:41:12,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:12,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:12,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:12,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:12,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:12,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:12,291 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 08:41:12,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894999835] [2020-10-14 08:41:12,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:12,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:12,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000283509] [2020-10-14 08:41:12,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:41:12,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:12,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:41:12,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:41:12,293 INFO L87 Difference]: Start difference. First operand 509 states and 711 transitions. Second operand 9 states. [2020-10-14 08:41:12,454 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:41:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:13,197 INFO L93 Difference]: Finished difference Result 1009 states and 1471 transitions. [2020-10-14 08:41:13,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:41:13,198 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-14 08:41:13,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:13,200 INFO L225 Difference]: With dead ends: 1009 [2020-10-14 08:41:13,201 INFO L226 Difference]: Without dead ends: 681 [2020-10-14 08:41:13,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-14 08:41:13,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-10-14 08:41:13,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 497. [2020-10-14 08:41:13,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-10-14 08:41:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 694 transitions. [2020-10-14 08:41:13,250 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 694 transitions. Word has length 55 [2020-10-14 08:41:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:13,251 INFO L479 AbstractCegarLoop]: Abstraction has 497 states and 694 transitions. [2020-10-14 08:41:13,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:41:13,251 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 694 transitions. [2020-10-14 08:41:13,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 08:41:13,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:13,252 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] [2020-10-14 08:41:13,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:41:13,252 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:13,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:13,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1287156098, now seen corresponding path program 1 times [2020-10-14 08:41:13,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:13,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326760140] [2020-10-14 08:41:13,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:13,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:13,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:13,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:13,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:13,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:13,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:14,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:16,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:16,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 08:41:16,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:41:16,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3202 [2020-10-14 08:41:16,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:16,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:41:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:41:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 08:41:16,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:16,669 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:16,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:16,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:16,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:16,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:41:16,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:16,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:16,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:16,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:16,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:16,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:16,688 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 08:41:16,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326760140] [2020-10-14 08:41:16,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:16,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:16,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243295514] [2020-10-14 08:41:16,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:41:16,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:16,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:41:16,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:41:16,690 INFO L87 Difference]: Start difference. First operand 497 states and 694 transitions. Second operand 9 states. [2020-10-14 08:41:16,850 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:41:17,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:17,547 INFO L93 Difference]: Finished difference Result 681 states and 965 transitions. [2020-10-14 08:41:17,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:41:17,548 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-14 08:41:17,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:17,553 INFO L225 Difference]: With dead ends: 681 [2020-10-14 08:41:17,554 INFO L226 Difference]: Without dead ends: 677 [2020-10-14 08:41:17,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:41:17,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-10-14 08:41:17,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 493. [2020-10-14 08:41:17,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-10-14 08:41:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 690 transitions. [2020-10-14 08:41:17,622 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 690 transitions. Word has length 55 [2020-10-14 08:41:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:17,623 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 690 transitions. [2020-10-14 08:41:17,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:41:17,623 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 690 transitions. [2020-10-14 08:41:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:41:17,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:17,632 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] [2020-10-14 08:41:17,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:41:17,633 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:17,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:17,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1743464555, now seen corresponding path program 1 times [2020-10-14 08:41:17,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:17,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650475685] [2020-10-14 08:41:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:17,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:17,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:18,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:19,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:19,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:41:19,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:41:19,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1652 [2020-10-14 08:41:19,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:19,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:19,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:41:19,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:41:19,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:41:19,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:19,510 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:19,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:19,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:19,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:19,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:19,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:19,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:41:19,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:19,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:41:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:41:19,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:19,538 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 08:41:19,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650475685] [2020-10-14 08:41:19,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:19,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:19,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562186435] [2020-10-14 08:41:19,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:41:19,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:19,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:41:19,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:41:19,540 INFO L87 Difference]: Start difference. First operand 493 states and 690 transitions. Second operand 10 states. [2020-10-14 08:41:19,740 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 08:41:20,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:20,576 INFO L93 Difference]: Finished difference Result 692 states and 975 transitions. [2020-10-14 08:41:20,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 08:41:20,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-14 08:41:20,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:20,583 INFO L225 Difference]: With dead ends: 692 [2020-10-14 08:41:20,583 INFO L226 Difference]: Without dead ends: 685 [2020-10-14 08:41:20,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-10-14 08:41:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-10-14 08:41:20,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 493. [2020-10-14 08:41:20,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-10-14 08:41:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 689 transitions. [2020-10-14 08:41:20,621 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 689 transitions. Word has length 56 [2020-10-14 08:41:20,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:20,621 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 689 transitions. [2020-10-14 08:41:20,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:41:20,621 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 689 transitions. [2020-10-14 08:41:20,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:41:20,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:20,622 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] [2020-10-14 08:41:20,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:41:20,623 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:20,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:20,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1271259923, now seen corresponding path program 1 times [2020-10-14 08:41:20,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:20,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058887787] [2020-10-14 08:41:20,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:20,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:20,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:20,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:21,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:21,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:41:21,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:41:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-10-14 08:41:21,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:21,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:41:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:41:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 08:41:21,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:21,938 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:21,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:21,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:21,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:41:21,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:21,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:41:21,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:21,967 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 08:41:21,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058887787] [2020-10-14 08:41:21,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:21,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:21,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930830451] [2020-10-14 08:41:21,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:41:21,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:21,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:41:21,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:41:21,969 INFO L87 Difference]: Start difference. First operand 493 states and 689 transitions. Second operand 10 states. [2020-10-14 08:41:22,159 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 08:41:23,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:23,276 INFO L93 Difference]: Finished difference Result 1057 states and 1521 transitions. [2020-10-14 08:41:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 08:41:23,276 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-14 08:41:23,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:23,279 INFO L225 Difference]: With dead ends: 1057 [2020-10-14 08:41:23,280 INFO L226 Difference]: Without dead ends: 691 [2020-10-14 08:41:23,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:41:23,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-10-14 08:41:23,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 493. [2020-10-14 08:41:23,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-10-14 08:41:23,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 687 transitions. [2020-10-14 08:41:23,337 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 687 transitions. Word has length 56 [2020-10-14 08:41:23,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:23,338 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 687 transitions. [2020-10-14 08:41:23,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:41:23,338 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 687 transitions. [2020-10-14 08:41:23,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:41:23,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:23,339 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] [2020-10-14 08:41:23,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:41:23,339 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:23,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:23,340 INFO L82 PathProgramCache]: Analyzing trace with hash -694501888, now seen corresponding path program 1 times [2020-10-14 08:41:23,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:23,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986007381] [2020-10-14 08:41:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:23,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:23,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:23,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:23,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:23,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:23,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:24,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:24,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:25,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:27,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:27,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:41:27,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:41:27,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4598 [2020-10-14 08:41:27,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:27,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:41:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:41:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:41:27,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:28,155 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:28,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:28,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:28,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:28,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:28,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:41:28,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:28,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:41:28,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:28,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:41:28,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:28,182 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 08:41:28,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986007381] [2020-10-14 08:41:28,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:28,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:28,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754281637] [2020-10-14 08:41:28,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:41:28,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:28,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:41:28,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:41:28,185 INFO L87 Difference]: Start difference. First operand 493 states and 687 transitions. Second operand 10 states. [2020-10-14 08:41:28,385 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 08:41:29,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:29,474 INFO L93 Difference]: Finished difference Result 692 states and 971 transitions. [2020-10-14 08:41:29,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 08:41:29,475 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-14 08:41:29,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:29,479 INFO L225 Difference]: With dead ends: 692 [2020-10-14 08:41:29,479 INFO L226 Difference]: Without dead ends: 685 [2020-10-14 08:41:29,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-14 08:41:29,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-10-14 08:41:29,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 493. [2020-10-14 08:41:29,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-10-14 08:41:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 686 transitions. [2020-10-14 08:41:29,554 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 686 transitions. Word has length 56 [2020-10-14 08:41:29,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:29,554 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 686 transitions. [2020-10-14 08:41:29,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:41:29,555 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 686 transitions. [2020-10-14 08:41:29,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 08:41:29,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:29,556 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] [2020-10-14 08:41:29,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:41:29,557 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:29,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2111474818, now seen corresponding path program 1 times [2020-10-14 08:41:29,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:29,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404790085] [2020-10-14 08:41:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:29,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:29,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:29,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:29,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:30,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:30,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 08:41:30,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:41:30,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-14 08:41:30,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:30,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:30,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 08:41:30,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:41:30,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 08:41:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:41:30,578 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:30,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:30,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:30,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:30,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:30,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:30,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:41:30,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:30,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:30,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:41:30,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404790085] [2020-10-14 08:41:30,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:30,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 08:41:30,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661350898] [2020-10-14 08:41:30,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 08:41:30,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:30,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 08:41:30,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:41:30,613 INFO L87 Difference]: Start difference. First operand 493 states and 686 transitions. Second operand 8 states. [2020-10-14 08:41:30,805 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:41:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:31,347 INFO L93 Difference]: Finished difference Result 503 states and 694 transitions. [2020-10-14 08:41:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:41:31,348 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-14 08:41:31,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:31,351 INFO L225 Difference]: With dead ends: 503 [2020-10-14 08:41:31,351 INFO L226 Difference]: Without dead ends: 485 [2020-10-14 08:41:31,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-14 08:41:31,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-10-14 08:41:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 475. [2020-10-14 08:41:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-14 08:41:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 666 transitions. [2020-10-14 08:41:31,409 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 666 transitions. Word has length 58 [2020-10-14 08:41:31,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:31,409 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 666 transitions. [2020-10-14 08:41:31,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 08:41:31,409 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 666 transitions. [2020-10-14 08:41:31,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 08:41:31,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:31,410 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] [2020-10-14 08:41:31,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:41:31,411 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:31,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:31,411 INFO L82 PathProgramCache]: Analyzing trace with hash -548300718, now seen corresponding path program 1 times [2020-10-14 08:41:31,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:31,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338316409] [2020-10-14 08:41:31,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:31,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:31,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:31,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:31,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:32,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:32,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 08:41:32,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:41:32,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-10-14 08:41:32,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:32,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:41:32,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:41:32,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 08:41:32,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:32,380 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:32,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:32,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:32,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:32,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:32,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:32,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:41:32,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:32,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:32,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:32,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:32,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:32,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:32,403 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 08:41:32,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338316409] [2020-10-14 08:41:32,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:32,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:32,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444126890] [2020-10-14 08:41:32,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:41:32,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:32,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:41:32,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:41:32,406 INFO L87 Difference]: Start difference. First operand 475 states and 666 transitions. Second operand 9 states. [2020-10-14 08:41:32,571 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:41:33,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:33,288 INFO L93 Difference]: Finished difference Result 639 states and 917 transitions. [2020-10-14 08:41:33,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:41:33,289 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-14 08:41:33,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:33,291 INFO L225 Difference]: With dead ends: 639 [2020-10-14 08:41:33,291 INFO L226 Difference]: Without dead ends: 633 [2020-10-14 08:41:33,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 08:41:33,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-10-14 08:41:33,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 469. [2020-10-14 08:41:33,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-10-14 08:41:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 657 transitions. [2020-10-14 08:41:33,341 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 657 transitions. Word has length 58 [2020-10-14 08:41:33,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:33,341 INFO L479 AbstractCegarLoop]: Abstraction has 469 states and 657 transitions. [2020-10-14 08:41:33,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:41:33,342 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 657 transitions. [2020-10-14 08:41:33,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 08:41:33,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:33,342 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] [2020-10-14 08:41:33,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:41:33,343 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:33,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:33,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1824557352, now seen corresponding path program 1 times [2020-10-14 08:41:33,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:33,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422077079] [2020-10-14 08:41:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:33,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:33,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:33,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:34,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:34,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 08:41:34,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:41:34,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-10-14 08:41:34,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:34,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:34,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:41:34,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:41:34,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 08:41:34,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:34,744 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:34,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:34,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:34,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:34,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:34,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:41:34,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:34,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:34,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:34,765 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 08:41:34,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422077079] [2020-10-14 08:41:34,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:34,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:41:34,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071510220] [2020-10-14 08:41:34,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:41:34,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:34,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:41:34,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:41:34,768 INFO L87 Difference]: Start difference. First operand 469 states and 657 transitions. Second operand 9 states. [2020-10-14 08:41:34,929 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:41:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:35,712 INFO L93 Difference]: Finished difference Result 471 states and 658 transitions. [2020-10-14 08:41:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:41:35,712 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-14 08:41:35,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:35,715 INFO L225 Difference]: With dead ends: 471 [2020-10-14 08:41:35,715 INFO L226 Difference]: Without dead ends: 459 [2020-10-14 08:41:35,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-14 08:41:35,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-10-14 08:41:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 457. [2020-10-14 08:41:35,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-10-14 08:41:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 643 transitions. [2020-10-14 08:41:35,768 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 643 transitions. Word has length 58 [2020-10-14 08:41:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:35,768 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 643 transitions. [2020-10-14 08:41:35,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:41:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 643 transitions. [2020-10-14 08:41:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 08:41:35,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:35,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:41:35,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:41:35,770 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:35,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:35,770 INFO L82 PathProgramCache]: Analyzing trace with hash -394206342, now seen corresponding path program 1 times [2020-10-14 08:41:35,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:35,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771239835] [2020-10-14 08:41:35,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:35,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:35,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:35,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:35,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:36,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:36,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:36,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:36,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:37,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:37,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:39,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:39,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:40,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:40,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:40,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 08:41:40,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:41:40,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:41:40,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:40,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:41:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 08:41:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 08:41:40,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:40,956 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:40,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:40,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:40,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:40,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:40,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:41:40,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:40,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:40,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:40,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:40,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:40,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:40,982 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 08:41:40,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771239835] [2020-10-14 08:41:40,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:40,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:41:40,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135908231] [2020-10-14 08:41:40,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:41:40,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:40,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:41:40,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:41:40,984 INFO L87 Difference]: Start difference. First operand 457 states and 643 transitions. Second operand 4 states. [2020-10-14 08:41:41,129 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 08:41:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:41,572 INFO L93 Difference]: Finished difference Result 1069 states and 1581 transitions. [2020-10-14 08:41:41,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:41:41,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-14 08:41:41,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:41,577 INFO L225 Difference]: With dead ends: 1069 [2020-10-14 08:41:41,578 INFO L226 Difference]: Without dead ends: 747 [2020-10-14 08:41:41,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:41:41,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-10-14 08:41:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 717. [2020-10-14 08:41:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-10-14 08:41:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1043 transitions. [2020-10-14 08:41:41,672 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1043 transitions. Word has length 76 [2020-10-14 08:41:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:41,673 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 1043 transitions. [2020-10-14 08:41:41,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:41:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1043 transitions. [2020-10-14 08:41:41,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 08:41:41,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:41,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:41:41,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:41:41,674 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:41,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:41,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1936730167, now seen corresponding path program 1 times [2020-10-14 08:41:41,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:41,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739786064] [2020-10-14 08:41:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:41,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:41,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:41,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:41,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:41,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:42,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:42,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:42,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:42,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:43,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:44,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:44,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:46,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:46,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 08:41:46,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:41:46,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:41:46,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:46,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:41:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 08:41:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 08:41:46,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:46,856 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:46,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:46,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:46,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:46,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:46,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:46,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:41:46,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:46,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:46,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:46,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:46,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:46,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:46,876 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 08:41:46,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739786064] [2020-10-14 08:41:46,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:46,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:41:46,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163500929] [2020-10-14 08:41:46,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:41:46,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:46,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:41:46,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:41:46,879 INFO L87 Difference]: Start difference. First operand 717 states and 1043 transitions. Second operand 4 states. [2020-10-14 08:41:47,033 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 08:41:47,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:47,528 INFO L93 Difference]: Finished difference Result 1817 states and 2725 transitions. [2020-10-14 08:41:47,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:41:47,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-14 08:41:47,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:47,533 INFO L225 Difference]: With dead ends: 1817 [2020-10-14 08:41:47,533 INFO L226 Difference]: Without dead ends: 1235 [2020-10-14 08:41:47,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:41:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2020-10-14 08:41:47,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1177. [2020-10-14 08:41:47,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-10-14 08:41:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1739 transitions. [2020-10-14 08:41:47,694 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1739 transitions. Word has length 77 [2020-10-14 08:41:47,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:47,694 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 1739 transitions. [2020-10-14 08:41:47,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:41:47,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1739 transitions. [2020-10-14 08:41:47,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 08:41:47,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:47,696 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] [2020-10-14 08:41:47,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:41:47,696 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:47,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:47,697 INFO L82 PathProgramCache]: Analyzing trace with hash -298372889, now seen corresponding path program 1 times [2020-10-14 08:41:47,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:47,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701690533] [2020-10-14 08:41:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:47,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:47,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:47,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:47,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:47,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:48,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:48,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:48,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:49,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:49,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:52,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:52,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 08:41:52,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:41:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:41:52,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:52,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:41:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:41:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 08:41:52,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:52,891 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:52,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:52,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:52,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:52,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:52,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:41:52,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:52,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:41:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:41:52,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:52,926 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 08:41:52,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701690533] [2020-10-14 08:41:52,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:52,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:41:52,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884251101] [2020-10-14 08:41:52,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:41:52,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:52,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:41:52,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:41:52,928 INFO L87 Difference]: Start difference. First operand 1177 states and 1739 transitions. Second operand 6 states. [2020-10-14 08:41:53,090 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:41:53,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:53,560 INFO L93 Difference]: Finished difference Result 1699 states and 2544 transitions. [2020-10-14 08:41:53,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:41:53,561 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-14 08:41:53,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:53,565 INFO L225 Difference]: With dead ends: 1699 [2020-10-14 08:41:53,565 INFO L226 Difference]: Without dead ends: 1177 [2020-10-14 08:41:53,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:41:53,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2020-10-14 08:41:53,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 611. [2020-10-14 08:41:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-14 08:41:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 884 transitions. [2020-10-14 08:41:53,673 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 884 transitions. Word has length 78 [2020-10-14 08:41:53,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:53,673 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 884 transitions. [2020-10-14 08:41:53,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:41:53,673 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 884 transitions. [2020-10-14 08:41:53,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 08:41:53,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:53,675 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] [2020-10-14 08:41:53,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:41:53,675 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:53,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:53,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2088349922, now seen corresponding path program 1 times [2020-10-14 08:41:53,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:53,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194335004] [2020-10-14 08:41:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:53,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:53,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:53,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:54,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:54,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:56,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:56,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 08:41:56,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:41:56,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2453 [2020-10-14 08:41:56,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:56,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:41:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 08:41:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:41:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:56,293 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:41:56,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:56,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:56,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:56,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:56,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:56,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:41:56,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:56,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:56,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:56,312 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 08:41:56,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194335004] [2020-10-14 08:41:56,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:41:56,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:41:56,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715573003] [2020-10-14 08:41:56,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:41:56,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:56,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:41:56,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:41:56,314 INFO L87 Difference]: Start difference. First operand 611 states and 884 transitions. Second operand 4 states. [2020-10-14 08:41:56,454 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:41:56,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:56,911 INFO L93 Difference]: Finished difference Result 1591 states and 2334 transitions. [2020-10-14 08:41:56,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:41:56,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-10-14 08:41:56,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:56,915 INFO L225 Difference]: With dead ends: 1591 [2020-10-14 08:41:56,915 INFO L226 Difference]: Without dead ends: 1069 [2020-10-14 08:41:56,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:41:56,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2020-10-14 08:41:57,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1067. [2020-10-14 08:41:57,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1067 states. [2020-10-14 08:41:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1528 transitions. [2020-10-14 08:41:57,180 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1528 transitions. Word has length 78 [2020-10-14 08:41:57,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:57,180 INFO L479 AbstractCegarLoop]: Abstraction has 1067 states and 1528 transitions. [2020-10-14 08:41:57,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:41:57,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1528 transitions. [2020-10-14 08:41:57,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 08:41:57,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:57,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:41:57,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 08:41:57,182 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:57,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:57,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1578766981, now seen corresponding path program 1 times [2020-10-14 08:41:57,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:57,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063472603] [2020-10-14 08:41:57,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:57,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:57,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:57,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:57,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:57,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:57,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:59,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:59,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 08:41:59,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:41:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2728 [2020-10-14 08:41:59,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:59,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:41:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 08:41:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:41:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:00,079 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:00,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:00,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:00,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:00,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:00,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:00,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:42:00,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:00,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:00,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:00,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:00,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:00,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:00,101 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 08:42:00,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063472603] [2020-10-14 08:42:00,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:00,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:42:00,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774023673] [2020-10-14 08:42:00,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:42:00,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:00,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:42:00,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:00,103 INFO L87 Difference]: Start difference. First operand 1067 states and 1528 transitions. Second operand 4 states. [2020-10-14 08:42:00,252 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:42:00,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:00,825 INFO L93 Difference]: Finished difference Result 2567 states and 3734 transitions. [2020-10-14 08:42:00,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:42:00,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-14 08:42:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:00,833 INFO L225 Difference]: With dead ends: 2567 [2020-10-14 08:42:00,834 INFO L226 Difference]: Without dead ends: 1589 [2020-10-14 08:42:00,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:42:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2020-10-14 08:42:01,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1587. [2020-10-14 08:42:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-10-14 08:42:01,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2268 transitions. [2020-10-14 08:42:01,110 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2268 transitions. Word has length 80 [2020-10-14 08:42:01,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:01,110 INFO L479 AbstractCegarLoop]: Abstraction has 1587 states and 2268 transitions. [2020-10-14 08:42:01,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:42:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2268 transitions. [2020-10-14 08:42:01,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 08:42:01,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:01,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:42:01,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 08:42:01,112 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:01,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:01,112 INFO L82 PathProgramCache]: Analyzing trace with hash 868579332, now seen corresponding path program 1 times [2020-10-14 08:42:01,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:01,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414338474] [2020-10-14 08:42:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:01,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:01,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:01,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:01,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:01,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:01,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:02,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:03,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:04,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:04,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 08:42:04,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:42:04,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3315 [2020-10-14 08:42:04,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:04,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:04,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:04,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 08:42:04,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:42:04,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:04,588 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:04,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:04,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:04,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:04,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:04,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:42:04,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:04,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:04,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:04,607 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 08:42:04,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414338474] [2020-10-14 08:42:04,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:04,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:42:04,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269899739] [2020-10-14 08:42:04,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:42:04,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:04,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:42:04,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:04,608 INFO L87 Difference]: Start difference. First operand 1587 states and 2268 transitions. Second operand 4 states. [2020-10-14 08:42:04,761 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:42:05,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:05,533 INFO L93 Difference]: Finished difference Result 4311 states and 6150 transitions. [2020-10-14 08:42:05,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:42:05,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-14 08:42:05,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:05,544 INFO L225 Difference]: With dead ends: 4311 [2020-10-14 08:42:05,544 INFO L226 Difference]: Without dead ends: 2813 [2020-10-14 08:42:05,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:42:05,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2020-10-14 08:42:06,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2763. [2020-10-14 08:42:06,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2763 states. [2020-10-14 08:42:06,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3832 transitions. [2020-10-14 08:42:06,047 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3832 transitions. Word has length 80 [2020-10-14 08:42:06,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:06,048 INFO L479 AbstractCegarLoop]: Abstraction has 2763 states and 3832 transitions. [2020-10-14 08:42:06,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:42:06,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3832 transitions. [2020-10-14 08:42:06,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 08:42:06,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:06,050 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] [2020-10-14 08:42:06,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 08:42:06,050 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:06,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:06,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1637968547, now seen corresponding path program 1 times [2020-10-14 08:42:06,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:06,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753213780] [2020-10-14 08:42:06,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:06,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:06,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:06,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:06,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:07,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:07,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 08:42:07,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:42:07,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1501 [2020-10-14 08:42:07,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:07,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:07,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:42:07,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 08:42:07,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:42:07,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:07,748 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:07,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:07,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:07,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:07,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:07,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:42:07,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:07,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:07,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:07,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:07,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:07,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:42:07,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753213780] [2020-10-14 08:42:07,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:07,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:42:07,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811048745] [2020-10-14 08:42:07,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:42:07,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:07,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:42:07,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:42:07,768 INFO L87 Difference]: Start difference. First operand 2763 states and 3832 transitions. Second operand 6 states. [2020-10-14 08:42:09,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:09,150 INFO L93 Difference]: Finished difference Result 4891 states and 6679 transitions. [2020-10-14 08:42:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:42:09,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-10-14 08:42:09,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:09,169 INFO L225 Difference]: With dead ends: 4891 [2020-10-14 08:42:09,169 INFO L226 Difference]: Without dead ends: 4889 [2020-10-14 08:42:09,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:42:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4889 states. [2020-10-14 08:42:09,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4889 to 2859. [2020-10-14 08:42:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2859 states. [2020-10-14 08:42:09,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 3912 transitions. [2020-10-14 08:42:09,693 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 3912 transitions. Word has length 81 [2020-10-14 08:42:09,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:09,693 INFO L479 AbstractCegarLoop]: Abstraction has 2859 states and 3912 transitions. [2020-10-14 08:42:09,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:42:09,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 3912 transitions. [2020-10-14 08:42:09,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 08:42:09,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:09,694 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] [2020-10-14 08:42:09,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 08:42:09,695 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:09,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:09,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1293213142, now seen corresponding path program 1 times [2020-10-14 08:42:09,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:09,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6077064] [2020-10-14 08:42:09,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:09,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:09,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:09,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:09,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:09,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:11,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:11,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:11,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:11,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:12,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:12,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:13,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:14,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:14,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 08:42:14,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 08:42:14,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:42:14,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:14,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:14,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:14,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 08:42:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 08:42:14,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:14,872 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:14,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:14,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:14,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:14,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:14,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:14,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:42:14,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:14,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:14,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:14,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:14,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:14,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:14,893 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 08:42:14,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6077064] [2020-10-14 08:42:14,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:14,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:42:14,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277422037] [2020-10-14 08:42:14,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:42:14,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:14,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:42:14,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:14,894 INFO L87 Difference]: Start difference. First operand 2859 states and 3912 transitions. Second operand 4 states. [2020-10-14 08:42:15,060 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 08:42:16,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:16,281 INFO L93 Difference]: Finished difference Result 7239 states and 9902 transitions. [2020-10-14 08:42:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:42:16,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-14 08:42:16,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:16,293 INFO L225 Difference]: With dead ends: 7239 [2020-10-14 08:42:16,294 INFO L226 Difference]: Without dead ends: 4469 [2020-10-14 08:42:16,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:42:16,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2020-10-14 08:42:17,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 4147. [2020-10-14 08:42:17,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4147 states. [2020-10-14 08:42:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 5604 transitions. [2020-10-14 08:42:17,117 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 5604 transitions. Word has length 81 [2020-10-14 08:42:17,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:17,117 INFO L479 AbstractCegarLoop]: Abstraction has 4147 states and 5604 transitions. [2020-10-14 08:42:17,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:42:17,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 5604 transitions. [2020-10-14 08:42:17,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 08:42:17,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:17,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:42:17,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 08:42:17,120 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:17,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:17,120 INFO L82 PathProgramCache]: Analyzing trace with hash -367256601, now seen corresponding path program 1 times [2020-10-14 08:42:17,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:17,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671409339] [2020-10-14 08:42:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:17,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:17,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:17,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:17,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:18,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:18,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:19,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:19,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:20,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:20,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:20,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:20,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:21,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:21,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:21,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:21,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:21,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:22,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:22,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 08:42:22,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 08:42:22,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:42:22,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:22,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:22,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:22,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 08:42:22,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 08:42:22,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:22,295 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:22,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:22,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:22,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:22,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:22,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:42:22,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:22,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:22,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:42:22,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671409339] [2020-10-14 08:42:22,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:22,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:42:22,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136229893] [2020-10-14 08:42:22,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:42:22,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:22,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:42:22,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:22,321 INFO L87 Difference]: Start difference. First operand 4147 states and 5604 transitions. Second operand 4 states. [2020-10-14 08:42:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:23,412 INFO L93 Difference]: Finished difference Result 7985 states and 10806 transitions. [2020-10-14 08:42:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:42:23,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-14 08:42:23,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:23,422 INFO L225 Difference]: With dead ends: 7985 [2020-10-14 08:42:23,422 INFO L226 Difference]: Without dead ends: 3927 [2020-10-14 08:42:23,429 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 08:42:23,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2020-10-14 08:42:24,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3925. [2020-10-14 08:42:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3925 states. [2020-10-14 08:42:24,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3925 states to 3925 states and 5204 transitions. [2020-10-14 08:42:24,406 INFO L78 Accepts]: Start accepts. Automaton has 3925 states and 5204 transitions. Word has length 101 [2020-10-14 08:42:24,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:24,406 INFO L479 AbstractCegarLoop]: Abstraction has 3925 states and 5204 transitions. [2020-10-14 08:42:24,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:42:24,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3925 states and 5204 transitions. [2020-10-14 08:42:24,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:42:24,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:24,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:42:24,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 08:42:24,409 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:24,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:24,409 INFO L82 PathProgramCache]: Analyzing trace with hash -53762353, now seen corresponding path program 1 times [2020-10-14 08:42:24,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:24,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135355729] [2020-10-14 08:42:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:24,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:24,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:24,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:24,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:25,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:25,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:26,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:26,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:26,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:26,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:26,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:27,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:27,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:29,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:29,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:42:29,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:42:29,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:42:29,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:29,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:42:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:42:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 08:42:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:29,589 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:29,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:29,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:29,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:29,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:29,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:42:29,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:29,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 08:42:29,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135355729] [2020-10-14 08:42:29,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:42:29,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:42:29,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232098029] [2020-10-14 08:42:29,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:42:29,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:29,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:42:29,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:42:29,615 INFO L87 Difference]: Start difference. First operand 3925 states and 5204 transitions. Second operand 6 states. [2020-10-14 08:42:29,777 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:42:31,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:31,163 INFO L93 Difference]: Finished difference Result 9445 states and 12571 transitions. [2020-10-14 08:42:31,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:42:31,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-14 08:42:31,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:31,176 INFO L225 Difference]: With dead ends: 9445 [2020-10-14 08:42:31,176 INFO L226 Difference]: Without dead ends: 5609 [2020-10-14 08:42:31,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:42:31,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5609 states. [2020-10-14 08:42:32,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5609 to 5373. [2020-10-14 08:42:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5373 states. [2020-10-14 08:42:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5373 states to 5373 states and 7136 transitions. [2020-10-14 08:42:32,636 INFO L78 Accepts]: Start accepts. Automaton has 5373 states and 7136 transitions. Word has length 102 [2020-10-14 08:42:32,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:32,636 INFO L479 AbstractCegarLoop]: Abstraction has 5373 states and 7136 transitions. [2020-10-14 08:42:32,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:42:32,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5373 states and 7136 transitions. [2020-10-14 08:42:32,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:42:32,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:32,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:42:32,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 08:42:32,640 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:32,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:32,640 INFO L82 PathProgramCache]: Analyzing trace with hash 799820425, now seen corresponding path program 1 times [2020-10-14 08:42:32,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:32,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224673324] [2020-10-14 08:42:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:32,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:32,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:32,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:32,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:32,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:34,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:34,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:34,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:34,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:35,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:35,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:36,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:37,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:37,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:42:37,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:42:37,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:42:37,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:37,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:42:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:42:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 08:42:37,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:37,825 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:37,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:37,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:37,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:37,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:37,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:37,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:42:37,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:37,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:37,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:37,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:37,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:37,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 08:42:37,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224673324] [2020-10-14 08:42:37,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:42:37,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:42:37,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788184408] [2020-10-14 08:42:37,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:42:37,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:37,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:42:37,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:42:37,853 INFO L87 Difference]: Start difference. First operand 5373 states and 7136 transitions. Second operand 6 states. [2020-10-14 08:42:38,007 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:42:41,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:41,259 INFO L93 Difference]: Finished difference Result 20765 states and 27613 transitions. [2020-10-14 08:42:41,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:42:41,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-14 08:42:41,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:41,283 INFO L225 Difference]: With dead ends: 20765 [2020-10-14 08:42:41,283 INFO L226 Difference]: Without dead ends: 15481 [2020-10-14 08:42:41,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:42:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15481 states. [2020-10-14 08:42:43,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15481 to 9749. [2020-10-14 08:42:43,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9749 states. [2020-10-14 08:42:43,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9749 states to 9749 states and 12932 transitions. [2020-10-14 08:42:43,494 INFO L78 Accepts]: Start accepts. Automaton has 9749 states and 12932 transitions. Word has length 102 [2020-10-14 08:42:43,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:43,495 INFO L479 AbstractCegarLoop]: Abstraction has 9749 states and 12932 transitions. [2020-10-14 08:42:43,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:42:43,495 INFO L276 IsEmpty]: Start isEmpty. Operand 9749 states and 12932 transitions. [2020-10-14 08:42:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:42:43,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:43,498 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:42:43,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 08:42:43,498 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:43,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:43,498 INFO L82 PathProgramCache]: Analyzing trace with hash -615188797, now seen corresponding path program 1 times [2020-10-14 08:42:43,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:43,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599929823] [2020-10-14 08:42:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:43,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:43,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:43,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:43,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:43,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:44,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:47,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:48,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:48,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:42:48,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:42:48,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:42:48,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:48,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:42:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:42:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 08:42:48,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:48,687 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:42:48,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:48,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:48,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:48,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:48,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:48,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:42:48,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:48,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:48,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:48,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 08:42:48,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599929823] [2020-10-14 08:42:48,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:42:48,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:42:48,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875068331] [2020-10-14 08:42:48,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:42:48,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:48,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:42:48,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:42:48,717 INFO L87 Difference]: Start difference. First operand 9749 states and 12932 transitions. Second operand 6 states. [2020-10-14 08:42:48,864 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:42:53,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:53,288 INFO L93 Difference]: Finished difference Result 26597 states and 35285 transitions. [2020-10-14 08:42:53,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:42:53,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-14 08:42:53,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:53,326 INFO L225 Difference]: With dead ends: 26597 [2020-10-14 08:42:53,326 INFO L226 Difference]: Without dead ends: 21313 [2020-10-14 08:42:53,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:42:53,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21313 states. [2020-10-14 08:42:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21313 to 15509. [2020-10-14 08:42:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15509 states. [2020-10-14 08:42:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15509 states to 15509 states and 20532 transitions. [2020-10-14 08:42:56,800 INFO L78 Accepts]: Start accepts. Automaton has 15509 states and 20532 transitions. Word has length 102 [2020-10-14 08:42:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:56,801 INFO L479 AbstractCegarLoop]: Abstraction has 15509 states and 20532 transitions. [2020-10-14 08:42:56,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:42:56,801 INFO L276 IsEmpty]: Start isEmpty. Operand 15509 states and 20532 transitions. [2020-10-14 08:42:56,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:42:56,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:56,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:42:56,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 08:42:56,804 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:56,804 INFO L82 PathProgramCache]: Analyzing trace with hash 493715320, now seen corresponding path program 1 times [2020-10-14 08:42:56,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:56,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028013180] [2020-10-14 08:42:56,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:56,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:56,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:56,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:56,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:57,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:57,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:57,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:58,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:00,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:00,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:01,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:01,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:43:01,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:43:01,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:43:01,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:01,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 08:43:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:43:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 08:43:01,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:02,012 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:43:02,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:02,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:02,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:02,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:02,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:43:02,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:02,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 08:43:02,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028013180] [2020-10-14 08:43:02,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:02,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 08:43:02,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503759555] [2020-10-14 08:43:02,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 08:43:02,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:02,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 08:43:02,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:43:02,037 INFO L87 Difference]: Start difference. First operand 15509 states and 20532 transitions. Second operand 8 states. [2020-10-14 08:43:02,216 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 08:43:07,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:07,940 INFO L93 Difference]: Finished difference Result 38972 states and 51520 transitions. [2020-10-14 08:43:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 08:43:07,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-14 08:43:07,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:07,965 INFO L225 Difference]: With dead ends: 38972 [2020-10-14 08:43:07,965 INFO L226 Difference]: Without dead ends: 23540 [2020-10-14 08:43:07,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-14 08:43:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23540 states. [2020-10-14 08:43:11,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23540 to 15509. [2020-10-14 08:43:11,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15509 states. [2020-10-14 08:43:11,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15509 states to 15509 states and 20530 transitions. [2020-10-14 08:43:11,302 INFO L78 Accepts]: Start accepts. Automaton has 15509 states and 20530 transitions. Word has length 103 [2020-10-14 08:43:11,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:11,302 INFO L479 AbstractCegarLoop]: Abstraction has 15509 states and 20530 transitions. [2020-10-14 08:43:11,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 08:43:11,302 INFO L276 IsEmpty]: Start isEmpty. Operand 15509 states and 20530 transitions. [2020-10-14 08:43:11,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 08:43:11,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:11,304 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:43:11,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 08:43:11,304 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:11,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:11,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1687175227, now seen corresponding path program 1 times [2020-10-14 08:43:11,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:11,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835860990] [2020-10-14 08:43:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:11,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:11,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:11,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:11,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:11,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:12,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:16,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:16,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 08:43:16,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:43:16,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:43:16,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:16,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:16,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 08:43:16,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:43:16,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 08:43:16,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:16,619 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:43:16,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:16,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:16,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:16,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:16,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:16,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:43:16,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:16,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:16,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:16,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:16,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:43:16,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:16,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835860990] [2020-10-14 08:43:16,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:43:16,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 08:43:16,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051323362] [2020-10-14 08:43:16,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 08:43:16,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:16,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 08:43:16,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-14 08:43:16,662 INFO L87 Difference]: Start difference. First operand 15509 states and 20530 transitions. Second operand 12 states. [2020-10-14 08:43:16,871 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-14 08:43:34,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:34,437 INFO L93 Difference]: Finished difference Result 84311 states and 110457 transitions. [2020-10-14 08:43:34,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 08:43:34,438 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2020-10-14 08:43:34,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:34,516 INFO L225 Difference]: With dead ends: 84311 [2020-10-14 08:43:34,516 INFO L226 Difference]: Without dead ends: 68891 [2020-10-14 08:43:34,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=361, Invalid=1279, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 08:43:34,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68891 states. [2020-10-14 08:43:44,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68891 to 36619. [2020-10-14 08:43:44,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36619 states. [2020-10-14 08:43:44,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36619 states to 36619 states and 48287 transitions. [2020-10-14 08:43:44,433 INFO L78 Accepts]: Start accepts. Automaton has 36619 states and 48287 transitions. Word has length 105 [2020-10-14 08:43:44,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:44,433 INFO L479 AbstractCegarLoop]: Abstraction has 36619 states and 48287 transitions. [2020-10-14 08:43:44,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 08:43:44,433 INFO L276 IsEmpty]: Start isEmpty. Operand 36619 states and 48287 transitions. [2020-10-14 08:43:44,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 08:43:44,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:44,438 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:43:44,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 08:43:44,438 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:44,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:44,439 INFO L82 PathProgramCache]: Analyzing trace with hash -209659104, now seen corresponding path program 1 times [2020-10-14 08:43:44,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:44,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307891403] [2020-10-14 08:43:44,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:44,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:44,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:44,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:44,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:44,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:45,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:45,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:47,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:47,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:47,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:47,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:47,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:48,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:48,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:48,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:48,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:49,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:49,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:49,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 08:43:49,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:43:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:43:49,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:49,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:43:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:43:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 08:43:49,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:49,825 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 08:43:49,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:49,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:49,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:49,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:49,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:43:49,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:49,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:43:49,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:49,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307891403] [2020-10-14 08:43:49,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:43:49,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 08:43:49,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254647329] [2020-10-14 08:43:49,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:43:49,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:49,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:43:49,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:43:49,903 INFO L87 Difference]: Start difference. First operand 36619 states and 48287 transitions. Second operand 11 states. [2020-10-14 08:43:50,123 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 151