/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-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:05:06,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:05:06,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:05:06,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:05:06,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:05:06,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:05:06,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:05:06,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:05:06,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:05:06,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:05:06,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:05:06,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:05:06,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:05:06,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:05:06,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:05:06,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:05:06,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:05:06,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:05:06,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:05:06,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:05:06,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:05:06,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:05:06,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:05:06,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:05:06,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:05:06,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:05:06,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:05:06,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:05:06,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:05:06,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:05:06,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:05:06,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:05:06,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:05:06,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:05:06,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:05:06,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:05:06,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:05:06,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:05:06,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:05:06,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:05:06,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:05:06,456 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:05:06,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:05:06,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:05:06,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:05:06,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:05:06,496 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:05:06,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:05:06,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:05:06,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:05:06,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:05:06,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:05:06,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:05:06,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:05:06,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:05:06,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:05:06,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:05:06,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:05:06,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:05:06,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:05:06,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:05:06,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:05:06,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:05:06,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:05:06,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:05:06,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:05:06,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:05:06,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:05:06,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:05:06,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:05:06,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:05:06,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:05:06,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:05:06,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:05:06,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:05:06,824 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:05:06,824 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:05:06,825 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:05:06,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c3a3da7e/2a81502afeab46569212435a8733b524/FLAGabcfb73e6 [2020-10-14 09:05:07,470 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:05:07,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:05:07,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c3a3da7e/2a81502afeab46569212435a8733b524/FLAGabcfb73e6 [2020-10-14 09:05:07,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c3a3da7e/2a81502afeab46569212435a8733b524 [2020-10-14 09:05:07,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:05:07,746 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:05:07,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:05:07,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:05:07,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:05:07,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:05:07" (1/1) ... [2020-10-14 09:05:07,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0b5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:07, skipping insertion in model container [2020-10-14 09:05:07,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:05:07" (1/1) ... [2020-10-14 09:05:07,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:05:07,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:05:08,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:05:08,610 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:05:08,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:05:08,993 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:05:08,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:08 WrapperNode [2020-10-14 09:05:08,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:05:08,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:05:08,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:05:08,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:05:09,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:08" (1/1) ... [2020-10-14 09:05:09,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:08" (1/1) ... [2020-10-14 09:05:09,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:08" (1/1) ... [2020-10-14 09:05:09,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:08" (1/1) ... [2020-10-14 09:05:09,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:08" (1/1) ... [2020-10-14 09:05:09,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:08" (1/1) ... [2020-10-14 09:05:09,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:08" (1/1) ... [2020-10-14 09:05:09,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:05:09,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:05:09,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:05:09,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:05:09,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:05:09,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:05:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:05:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:05:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:05:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:05:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:05:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:05:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:05:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:05:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:05:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:05:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:05:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:05:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:05:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:05:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:05:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:05:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:05:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:05:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:05:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:05:10,844 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:05:10,844 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:05:10,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:05:10 BoogieIcfgContainer [2020-10-14 09:05:10,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:05:10,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:05:10,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:05:10,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:05:10,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:05:07" (1/3) ... [2020-10-14 09:05:10,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484bd3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:05:10, skipping insertion in model container [2020-10-14 09:05:10,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:08" (2/3) ... [2020-10-14 09:05:10,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484bd3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:05:10, skipping insertion in model container [2020-10-14 09:05:10,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:05:10" (3/3) ... [2020-10-14 09:05:10,861 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:05:10,871 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:05:10,880 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-14 09:05:10,895 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-14 09:05:10,924 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:05:10,924 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:05:10,924 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:05:10,925 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:05:10,925 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:05:10,925 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:05:10,925 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:05:10,925 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:05:10,954 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states. [2020-10-14 09:05:10,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 09:05:10,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:10,969 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 09:05:10,970 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash 252211112, now seen corresponding path program 1 times [2020-10-14 09:05:10,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:10,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404368724] [2020-10-14 09:05:10,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:11,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:11,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:11,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:12,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:12,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:12,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:12,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:14,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:16,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:16,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 09:05:16,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:05:16,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:05:16,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:16,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 09:05:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 09:05:16,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:05:17,013 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:17,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:17,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:17,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:17,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:17,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 09:05:17,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:17,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:17,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:17,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:17,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404368724] [2020-10-14 09:05:17,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:17,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:17,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607823483] [2020-10-14 09:05:17,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:17,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:17,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:17,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:17,109 INFO L87 Difference]: Start difference. First operand 446 states. Second operand 4 states. [2020-10-14 09:05:17,587 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-14 09:05:20,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:20,322 INFO L93 Difference]: Finished difference Result 701 states and 1229 transitions. [2020-10-14 09:05:20,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:20,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 09:05:20,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:20,354 INFO L225 Difference]: With dead ends: 701 [2020-10-14 09:05:20,354 INFO L226 Difference]: Without dead ends: 544 [2020-10-14 09:05:20,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:20,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-10-14 09:05:20,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 538. [2020-10-14 09:05:20,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-14 09:05:20,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 713 transitions. [2020-10-14 09:05:20,464 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 713 transitions. Word has length 53 [2020-10-14 09:05:20,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:20,465 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 713 transitions. [2020-10-14 09:05:20,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:20,465 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 713 transitions. [2020-10-14 09:05:20,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 09:05:20,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:20,470 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 09:05:20,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:05:20,470 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:20,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:20,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1200777621, now seen corresponding path program 1 times [2020-10-14 09:05:20,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:20,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598120496] [2020-10-14 09:05:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:20,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:20,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:20,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:21,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:24,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:24,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:24,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:25,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 09:05:25,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:05:25,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 09:05:25,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:25,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 09:05:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 09:05:25,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:25,967 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:25,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:25,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:25,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:25,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:25,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:05:25,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:25,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:25,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:25,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:25,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:26,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598120496] [2020-10-14 09:05:26,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:26,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:26,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013824936] [2020-10-14 09:05:26,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:26,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:26,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:26,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:26,030 INFO L87 Difference]: Start difference. First operand 538 states and 713 transitions. Second operand 4 states. [2020-10-14 09:05:26,504 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-14 09:05:28,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:28,453 INFO L93 Difference]: Finished difference Result 939 states and 1299 transitions. [2020-10-14 09:05:28,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:28,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 09:05:28,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:28,460 INFO L225 Difference]: With dead ends: 939 [2020-10-14 09:05:28,460 INFO L226 Difference]: Without dead ends: 717 [2020-10-14 09:05:28,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:28,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-10-14 09:05:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 711. [2020-10-14 09:05:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2020-10-14 09:05:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 964 transitions. [2020-10-14 09:05:28,500 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 964 transitions. Word has length 53 [2020-10-14 09:05:28,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:28,501 INFO L479 AbstractCegarLoop]: Abstraction has 711 states and 964 transitions. [2020-10-14 09:05:28,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:28,501 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 964 transitions. [2020-10-14 09:05:28,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 09:05:28,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:28,504 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 09:05:28,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:05:28,504 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:28,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:28,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1521732498, now seen corresponding path program 1 times [2020-10-14 09:05:28,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:28,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146434501] [2020-10-14 09:05:28,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:28,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:28,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:28,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:29,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:29,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:29,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:29,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:30,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:31,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:33,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:33,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 09:05:33,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:05:33,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:05:33,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:33,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:05:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 09:05:33,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:34,020 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:34,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:34,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:34,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:34,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:34,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:34,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 09:05:34,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:34,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:05:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:34,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146434501] [2020-10-14 09:05:34,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:34,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:05:34,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753761715] [2020-10-14 09:05:34,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:34,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:34,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:34,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:34,085 INFO L87 Difference]: Start difference. First operand 711 states and 964 transitions. Second operand 6 states. [2020-10-14 09:05:34,457 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 09:05:36,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:36,378 INFO L93 Difference]: Finished difference Result 1460 states and 2028 transitions. [2020-10-14 09:05:36,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:05:36,380 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-14 09:05:36,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:36,386 INFO L225 Difference]: With dead ends: 1460 [2020-10-14 09:05:36,386 INFO L226 Difference]: Without dead ends: 957 [2020-10-14 09:05:36,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:05:36,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-10-14 09:05:36,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 949. [2020-10-14 09:05:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2020-10-14 09:05:36,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1296 transitions. [2020-10-14 09:05:36,492 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1296 transitions. Word has length 53 [2020-10-14 09:05:36,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:36,494 INFO L479 AbstractCegarLoop]: Abstraction has 949 states and 1296 transitions. [2020-10-14 09:05:36,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:05:36,494 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1296 transitions. [2020-10-14 09:05:36,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 09:05:36,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:36,499 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 09:05:36,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:05:36,500 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:36,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:36,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1415691567, now seen corresponding path program 1 times [2020-10-14 09:05:36,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:36,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670930442] [2020-10-14 09:05:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:36,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:36,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:37,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:37,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:37,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:37,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:39,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:39,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:39,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:41,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:41,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:41,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 09:05:41,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:05:41,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:05:41,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:41,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:41,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:41,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 09:05:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:05:41,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:42,027 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:42,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:42,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:42,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:42,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:42,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:42,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:05:42,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:42,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:42,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670930442] [2020-10-14 09:05:42,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:42,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:42,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603796023] [2020-10-14 09:05:42,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:42,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:42,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:42,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:42,086 INFO L87 Difference]: Start difference. First operand 949 states and 1296 transitions. Second operand 4 states. [2020-10-14 09:05:42,458 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-14 09:05:44,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:44,555 INFO L93 Difference]: Finished difference Result 2109 states and 2975 transitions. [2020-10-14 09:05:44,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:44,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 09:05:44,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:44,566 INFO L225 Difference]: With dead ends: 2109 [2020-10-14 09:05:44,566 INFO L226 Difference]: Without dead ends: 1506 [2020-10-14 09:05:44,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:44,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2020-10-14 09:05:44,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1495. [2020-10-14 09:05:44,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1495 states. [2020-10-14 09:05:44,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2072 transitions. [2020-10-14 09:05:44,664 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2072 transitions. Word has length 53 [2020-10-14 09:05:44,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:44,665 INFO L479 AbstractCegarLoop]: Abstraction has 1495 states and 2072 transitions. [2020-10-14 09:05:44,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:44,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2072 transitions. [2020-10-14 09:05:44,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 09:05:44,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:44,669 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] [2020-10-14 09:05:44,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:05:44,669 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:44,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:44,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1093828955, now seen corresponding path program 1 times [2020-10-14 09:05:44,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:44,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916621875] [2020-10-14 09:05:44,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:44,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:46,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:46,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:46,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:49,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:49,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:49,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:49,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:49,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 09:05:49,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:05:49,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:05:49,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:49,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:49,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 09:05:49,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:05:49,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 09:05:49,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:50,248 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:50,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:50,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:50,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:50,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:50,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:50,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:05:50,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:50,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:50,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:50,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:50,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:50,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:05:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:50,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916621875] [2020-10-14 09:05:50,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:50,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 09:05:50,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764408270] [2020-10-14 09:05:50,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 09:05:50,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:50,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 09:05:50,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:05:50,296 INFO L87 Difference]: Start difference. First operand 1495 states and 2072 transitions. Second operand 7 states. [2020-10-14 09:05:50,695 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-14 09:05:54,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:54,126 INFO L93 Difference]: Finished difference Result 4130 states and 5896 transitions. [2020-10-14 09:05:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:05:54,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-10-14 09:05:54,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:54,143 INFO L225 Difference]: With dead ends: 4130 [2020-10-14 09:05:54,144 INFO L226 Difference]: Without dead ends: 3152 [2020-10-14 09:05:54,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 09:05:54,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2020-10-14 09:05:54,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 1495. [2020-10-14 09:05:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1495 states. [2020-10-14 09:05:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2068 transitions. [2020-10-14 09:05:54,231 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2068 transitions. Word has length 54 [2020-10-14 09:05:54,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:54,232 INFO L479 AbstractCegarLoop]: Abstraction has 1495 states and 2068 transitions. [2020-10-14 09:05:54,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 09:05:54,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2068 transitions. [2020-10-14 09:05:54,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 09:05:54,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:54,235 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] [2020-10-14 09:05:54,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:05:54,235 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:54,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:54,236 INFO L82 PathProgramCache]: Analyzing trace with hash -86396493, now seen corresponding path program 1 times [2020-10-14 09:05:54,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:54,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398665675] [2020-10-14 09:05:54,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:54,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:54,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:54,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:54,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:54,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:54,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:54,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:54,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:55,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:55,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:55,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:56,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:57,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:58,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:59,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:59,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 09:05:59,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:05:59,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:05:59,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:59,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:05:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:05:59,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:59,713 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:05:59,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:59,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:59,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:59,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:59,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:59,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:05:59,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:59,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:59,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:59,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398665675] [2020-10-14 09:05:59,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:59,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:05:59,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679418490] [2020-10-14 09:05:59,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:59,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:59,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:59,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:59,763 INFO L87 Difference]: Start difference. First operand 1495 states and 2068 transitions. Second operand 6 states. [2020-10-14 09:06:00,104 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:06:03,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:03,778 INFO L93 Difference]: Finished difference Result 8544 states and 12465 transitions. [2020-10-14 09:06:03,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:06:03,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-14 09:06:03,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:03,812 INFO L225 Difference]: With dead ends: 8544 [2020-10-14 09:06:03,812 INFO L226 Difference]: Without dead ends: 7553 [2020-10-14 09:06:03,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:06:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7553 states. [2020-10-14 09:06:04,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7553 to 4451. [2020-10-14 09:06:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4451 states. [2020-10-14 09:06:04,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 6359 transitions. [2020-10-14 09:06:04,084 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 6359 transitions. Word has length 54 [2020-10-14 09:06:04,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:04,084 INFO L479 AbstractCegarLoop]: Abstraction has 4451 states and 6359 transitions. [2020-10-14 09:06:04,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:06:04,085 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 6359 transitions. [2020-10-14 09:06:04,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 09:06:04,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:04,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:06:04,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:06:04,091 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:04,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:04,091 INFO L82 PathProgramCache]: Analyzing trace with hash -190823730, now seen corresponding path program 1 times [2020-10-14 09:06:04,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:04,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803083729] [2020-10-14 09:06:04,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:04,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:04,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:04,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:04,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:04,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:05,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:05,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:05,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:05,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:05,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:06,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:08,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:08,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:09,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:09,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 09:06:09,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:06:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:06:09,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:09,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:06:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:06:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 09:06:09,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:09,491 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:06:09,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:09,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:09,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:09,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:09,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:09,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:06:09,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:09,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:09,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:09,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:09,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:09,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:09,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803083729] [2020-10-14 09:06:09,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:09,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:06:09,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688435337] [2020-10-14 09:06:09,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:06:09,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:09,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:06:09,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:06:09,521 INFO L87 Difference]: Start difference. First operand 4451 states and 6359 transitions. Second operand 6 states. [2020-10-14 09:06:09,896 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:06:13,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:13,056 INFO L93 Difference]: Finished difference Result 9083 states and 13259 transitions. [2020-10-14 09:06:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:06:13,056 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-14 09:06:13,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:13,081 INFO L225 Difference]: With dead ends: 9083 [2020-10-14 09:06:13,082 INFO L226 Difference]: Without dead ends: 7609 [2020-10-14 09:06:13,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:06:13,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7609 states. [2020-10-14 09:06:13,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7609 to 4399. [2020-10-14 09:06:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4399 states. [2020-10-14 09:06:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 6293 transitions. [2020-10-14 09:06:13,364 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 6293 transitions. Word has length 55 [2020-10-14 09:06:13,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:13,364 INFO L479 AbstractCegarLoop]: Abstraction has 4399 states and 6293 transitions. [2020-10-14 09:06:13,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:06:13,364 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 6293 transitions. [2020-10-14 09:06:13,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 09:06:13,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:13,368 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 09:06:13,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:06:13,370 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:13,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:13,371 INFO L82 PathProgramCache]: Analyzing trace with hash -2070839846, now seen corresponding path program 1 times [2020-10-14 09:06:13,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:13,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215387984] [2020-10-14 09:06:13,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:13,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:13,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:13,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:13,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:13,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:14,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:15,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:15,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:15,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:15,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:15,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:15,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:16,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:16,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:18,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:18,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 09:06:18,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:06:18,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:06:18,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:18,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:18,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:06:18,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:06:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:06:18,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:18,769 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:06:18,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:18,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:18,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:18,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:18,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:18,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:06:18,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:18,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:18,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:18,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:18,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:18,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:18,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215387984] [2020-10-14 09:06:18,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:18,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:06:18,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398920502] [2020-10-14 09:06:18,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:06:18,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:18,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:06:18,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:06:18,794 INFO L87 Difference]: Start difference. First operand 4399 states and 6293 transitions. Second operand 6 states. [2020-10-14 09:06:19,160 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:06:23,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:23,078 INFO L93 Difference]: Finished difference Result 30149 states and 44536 transitions. [2020-10-14 09:06:23,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:06:23,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-14 09:06:23,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:23,156 INFO L225 Difference]: With dead ends: 30149 [2020-10-14 09:06:23,156 INFO L226 Difference]: Without dead ends: 26790 [2020-10-14 09:06:23,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:06:23,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26790 states. [2020-10-14 09:06:23,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26790 to 10744. [2020-10-14 09:06:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10744 states. [2020-10-14 09:06:24,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10744 states to 10744 states and 15761 transitions. [2020-10-14 09:06:24,002 INFO L78 Accepts]: Start accepts. Automaton has 10744 states and 15761 transitions. Word has length 55 [2020-10-14 09:06:24,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:24,003 INFO L479 AbstractCegarLoop]: Abstraction has 10744 states and 15761 transitions. [2020-10-14 09:06:24,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:06:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 10744 states and 15761 transitions. [2020-10-14 09:06:24,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:06:24,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:24,009 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 09:06:24,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:06:24,009 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:24,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:24,010 INFO L82 PathProgramCache]: Analyzing trace with hash 313610927, now seen corresponding path program 1 times [2020-10-14 09:06:24,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:24,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864957442] [2020-10-14 09:06:24,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:24,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:24,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:24,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:24,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:24,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:25,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:25,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:25,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:25,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:26,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:27,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:27,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:06:27,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:06:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3624 [2020-10-14 09:06:27,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:27,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:06:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:06:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:06:27,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:28,032 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:06:28,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:28,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:28,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:28,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:28,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:28,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:06:28,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:28,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:28,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:28,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:28,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:28,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:28,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:28,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864957442] [2020-10-14 09:06:28,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:28,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:06:28,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018892911] [2020-10-14 09:06:28,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:06:28,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:28,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:06:28,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:06:28,060 INFO L87 Difference]: Start difference. First operand 10744 states and 15761 transitions. Second operand 6 states. [2020-10-14 09:06:31,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:31,439 INFO L93 Difference]: Finished difference Result 48850 states and 72447 transitions. [2020-10-14 09:06:31,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:06:31,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-14 09:06:31,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:31,541 INFO L225 Difference]: With dead ends: 48850 [2020-10-14 09:06:31,541 INFO L226 Difference]: Without dead ends: 41306 [2020-10-14 09:06:31,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:06:31,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41306 states. [2020-10-14 09:06:32,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41306 to 10642. [2020-10-14 09:06:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10642 states. [2020-10-14 09:06:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10642 states to 10642 states and 15479 transitions. [2020-10-14 09:06:32,373 INFO L78 Accepts]: Start accepts. Automaton has 10642 states and 15479 transitions. Word has length 56 [2020-10-14 09:06:32,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:32,373 INFO L479 AbstractCegarLoop]: Abstraction has 10642 states and 15479 transitions. [2020-10-14 09:06:32,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:06:32,374 INFO L276 IsEmpty]: Start isEmpty. Operand 10642 states and 15479 transitions. [2020-10-14 09:06:32,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:06:32,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:32,380 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 09:06:32,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:06:32,380 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:32,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:32,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1032473279, now seen corresponding path program 1 times [2020-10-14 09:06:32,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:32,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637847599] [2020-10-14 09:06:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:32,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:32,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:32,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:32,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:32,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:33,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:33,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:33,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:33,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:33,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:34,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:34,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:34,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:34,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:35,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:35,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:35,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:36,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:37,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:37,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:06:37,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 09:06:37,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:06:37,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:37,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:06:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:06:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 09:06:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:37,843 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:06:37,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:37,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:37,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:37,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:37,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:37,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 09:06:37,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:37,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:37,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:06:37,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:37,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:06:37,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:37,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637847599] [2020-10-14 09:06:37,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:37,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:06:37,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588272889] [2020-10-14 09:06:37,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:06:37,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:37,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:06:37,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:06:37,910 INFO L87 Difference]: Start difference. First operand 10642 states and 15479 transitions. Second operand 10 states. [2020-10-14 09:06:38,256 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2020-10-14 09:06:41,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:41,919 INFO L93 Difference]: Finished difference Result 34480 states and 51146 transitions. [2020-10-14 09:06:41,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 09:06:41,920 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-14 09:06:41,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:41,979 INFO L225 Difference]: With dead ends: 34480 [2020-10-14 09:06:41,980 INFO L226 Difference]: Without dead ends: 25962 [2020-10-14 09:06:42,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-14 09:06:42,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25962 states. [2020-10-14 09:06:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25962 to 13810. [2020-10-14 09:06:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13810 states. [2020-10-14 09:06:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13810 states to 13810 states and 20251 transitions. [2020-10-14 09:06:43,091 INFO L78 Accepts]: Start accepts. Automaton has 13810 states and 20251 transitions. Word has length 56 [2020-10-14 09:06:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:43,092 INFO L479 AbstractCegarLoop]: Abstraction has 13810 states and 20251 transitions. [2020-10-14 09:06:43,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:06:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 13810 states and 20251 transitions. [2020-10-14 09:06:43,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:06:43,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:43,097 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 09:06:43,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:06:43,097 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:43,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:43,097 INFO L82 PathProgramCache]: Analyzing trace with hash 127028172, now seen corresponding path program 1 times [2020-10-14 09:06:43,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:43,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840144116] [2020-10-14 09:06:43,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:43,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:43,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:43,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:43,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:43,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:43,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:45,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:45,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:46,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:46,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:46,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:47,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:48,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:48,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:06:48,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 09:06:48,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:06:48,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:48,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:06:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:06:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 09:06:48,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:48,495 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:06:48,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:48,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:48,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:48,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:48,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:06:48,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:48,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:48,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:48,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840144116] [2020-10-14 09:06:48,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:48,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:06:48,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585041858] [2020-10-14 09:06:48,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:06:48,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:48,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:06:48,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:06:48,518 INFO L87 Difference]: Start difference. First operand 13810 states and 20251 transitions. Second operand 6 states. [2020-10-14 09:06:51,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:51,558 INFO L93 Difference]: Finished difference Result 41018 states and 60455 transitions. [2020-10-14 09:06:51,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:06:51,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-14 09:06:51,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:51,612 INFO L225 Difference]: With dead ends: 41018 [2020-10-14 09:06:51,612 INFO L226 Difference]: Without dead ends: 29378 [2020-10-14 09:06:51,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:06:51,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29378 states. [2020-10-14 09:06:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29378 to 13139. [2020-10-14 09:06:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13139 states. [2020-10-14 09:06:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13139 states to 13139 states and 19251 transitions. [2020-10-14 09:06:52,489 INFO L78 Accepts]: Start accepts. Automaton has 13139 states and 19251 transitions. Word has length 56 [2020-10-14 09:06:52,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:52,489 INFO L479 AbstractCegarLoop]: Abstraction has 13139 states and 19251 transitions. [2020-10-14 09:06:52,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:06:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand 13139 states and 19251 transitions. [2020-10-14 09:06:52,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:06:52,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:52,493 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] [2020-10-14 09:06:52,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:06:52,494 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:52,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:52,494 INFO L82 PathProgramCache]: Analyzing trace with hash -516448296, now seen corresponding path program 1 times [2020-10-14 09:06:52,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:52,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292126377] [2020-10-14 09:06:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:52,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:52,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:52,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:53,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:53,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:53,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:53,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:53,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:53,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:56,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:56,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:57,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:57,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:57,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:57,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:57,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:57,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:06:57,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:06:57,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:06:57,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:57,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:06:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 09:06:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:06:57,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:57,883 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:06:57,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:57,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:57,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:57,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:57,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:57,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:06:57,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:57,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:57,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:57,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292126377] [2020-10-14 09:06:57,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:57,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:06:57,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671684443] [2020-10-14 09:06:57,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:06:57,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:57,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:06:57,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:06:57,913 INFO L87 Difference]: Start difference. First operand 13139 states and 19251 transitions. Second operand 4 states. [2020-10-14 09:07:00,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:00,106 INFO L93 Difference]: Finished difference Result 15075 states and 22037 transitions. [2020-10-14 09:07:00,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:07:00,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-14 09:07:00,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:00,122 INFO L225 Difference]: With dead ends: 15075 [2020-10-14 09:07:00,122 INFO L226 Difference]: Without dead ends: 12894 [2020-10-14 09:07:00,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:07:00,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12894 states. [2020-10-14 09:07:00,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12894 to 12892. [2020-10-14 09:07:00,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12892 states. [2020-10-14 09:07:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12892 states to 12892 states and 18354 transitions. [2020-10-14 09:07:00,893 INFO L78 Accepts]: Start accepts. Automaton has 12892 states and 18354 transitions. Word has length 57 [2020-10-14 09:07:00,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:00,893 INFO L479 AbstractCegarLoop]: Abstraction has 12892 states and 18354 transitions. [2020-10-14 09:07:00,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:07:00,893 INFO L276 IsEmpty]: Start isEmpty. Operand 12892 states and 18354 transitions. [2020-10-14 09:07:00,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:07:00,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:00,896 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] [2020-10-14 09:07:00,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:07:00,897 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:00,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:00,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1084530960, now seen corresponding path program 1 times [2020-10-14 09:07:00,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:00,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391727516] [2020-10-14 09:07:00,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:00,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:00,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:01,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:01,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:01,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:01,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:01,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:01,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:02,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:02,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:03,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:03,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:03,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:03,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:05,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:05,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:05,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:05,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:05,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:07:05,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:07:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:07:05,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:05,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:07:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:07:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:07:05,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:06,462 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:07:06,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:06,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:06,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:06,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:06,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:06,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:07:06,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:06,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:06,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:06,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:06,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:06,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:06,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:06,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391727516] [2020-10-14 09:07:06,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:06,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:07:06,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138657673] [2020-10-14 09:07:06,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:07:06,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:06,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:07:06,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:07:06,499 INFO L87 Difference]: Start difference. First operand 12892 states and 18354 transitions. Second operand 9 states. [2020-10-14 09:07:06,913 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-14 09:07:11,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:11,477 INFO L93 Difference]: Finished difference Result 37958 states and 54583 transitions. [2020-10-14 09:07:11,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 09:07:11,478 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-14 09:07:11,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:11,519 INFO L225 Difference]: With dead ends: 37958 [2020-10-14 09:07:11,519 INFO L226 Difference]: Without dead ends: 37954 [2020-10-14 09:07:11,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-14 09:07:11,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37954 states. [2020-10-14 09:07:12,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37954 to 12882. [2020-10-14 09:07:12,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12882 states. [2020-10-14 09:07:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12882 states to 12882 states and 18339 transitions. [2020-10-14 09:07:12,660 INFO L78 Accepts]: Start accepts. Automaton has 12882 states and 18339 transitions. Word has length 57 [2020-10-14 09:07:12,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:12,660 INFO L479 AbstractCegarLoop]: Abstraction has 12882 states and 18339 transitions. [2020-10-14 09:07:12,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:07:12,660 INFO L276 IsEmpty]: Start isEmpty. Operand 12882 states and 18339 transitions. [2020-10-14 09:07:12,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:07:12,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:12,663 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] [2020-10-14 09:07:12,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:07:12,663 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:12,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:12,664 INFO L82 PathProgramCache]: Analyzing trace with hash 30470376, now seen corresponding path program 1 times [2020-10-14 09:07:12,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:12,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043135182] [2020-10-14 09:07:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:12,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:12,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:13,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:13,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:14,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:14,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:14,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:14,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:14,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:14,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:15,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:15,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:15,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:16,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:16,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:16,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:17,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:17,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:17,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:17,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:07:17,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 09:07:17,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:07:17,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:17,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:17,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:07:17,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:07:17,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 09:07:17,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:18,121 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:07:18,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:18,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:18,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:18,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:18,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:18,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:07:18,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:18,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:07:18,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:18,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043135182] [2020-10-14 09:07:18,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:18,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:07:18,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141212582] [2020-10-14 09:07:18,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:07:18,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:18,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:07:18,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:07:18,162 INFO L87 Difference]: Start difference. First operand 12882 states and 18339 transitions. Second operand 10 states. [2020-10-14 09:07:18,586 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-14 09:07:22,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:22,303 INFO L93 Difference]: Finished difference Result 25881 states and 37173 transitions. [2020-10-14 09:07:22,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 09:07:22,304 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-14 09:07:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:22,325 INFO L225 Difference]: With dead ends: 25881 [2020-10-14 09:07:22,325 INFO L226 Difference]: Without dead ends: 19747 [2020-10-14 09:07:22,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-14 09:07:22,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19747 states. [2020-10-14 09:07:22,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19747 to 6755. [2020-10-14 09:07:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6755 states. [2020-10-14 09:07:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6755 states to 6755 states and 9557 transitions. [2020-10-14 09:07:22,865 INFO L78 Accepts]: Start accepts. Automaton has 6755 states and 9557 transitions. Word has length 57 [2020-10-14 09:07:22,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:22,866 INFO L479 AbstractCegarLoop]: Abstraction has 6755 states and 9557 transitions. [2020-10-14 09:07:22,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:07:22,866 INFO L276 IsEmpty]: Start isEmpty. Operand 6755 states and 9557 transitions. [2020-10-14 09:07:22,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 09:07:22,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:22,868 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 09:07:22,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:07:22,868 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:22,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:22,868 INFO L82 PathProgramCache]: Analyzing trace with hash -8613455, now seen corresponding path program 1 times [2020-10-14 09:07:22,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:22,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526409587] [2020-10-14 09:07:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:22,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:22,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:23,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:23,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:25,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:25,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 09:07:25,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:07:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2224 [2020-10-14 09:07:25,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:25,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 09:07:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:07:25,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:25,470 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:07:25,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:25,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:25,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:25,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:25,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:25,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:07:25,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:25,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:25,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:25,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:25,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:25,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:25,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526409587] [2020-10-14 09:07:25,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:25,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:07:25,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98818476] [2020-10-14 09:07:25,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:07:25,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:25,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:07:25,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:07:25,502 INFO L87 Difference]: Start difference. First operand 6755 states and 9557 transitions. Second operand 4 states. [2020-10-14 09:07:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:27,284 INFO L93 Difference]: Finished difference Result 9332 states and 13228 transitions. [2020-10-14 09:07:27,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:07:27,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-14 09:07:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:27,291 INFO L225 Difference]: With dead ends: 9332 [2020-10-14 09:07:27,291 INFO L226 Difference]: Without dead ends: 6593 [2020-10-14 09:07:27,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:07:27,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6593 states. [2020-10-14 09:07:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6593 to 6591. [2020-10-14 09:07:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6591 states. [2020-10-14 09:07:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6591 states to 6591 states and 9198 transitions. [2020-10-14 09:07:27,770 INFO L78 Accepts]: Start accepts. Automaton has 6591 states and 9198 transitions. Word has length 58 [2020-10-14 09:07:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:27,771 INFO L479 AbstractCegarLoop]: Abstraction has 6591 states and 9198 transitions. [2020-10-14 09:07:27,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:07:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 6591 states and 9198 transitions. [2020-10-14 09:07:27,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 09:07:27,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:27,773 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] [2020-10-14 09:07:27,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:07:27,773 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:27,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:27,774 INFO L82 PathProgramCache]: Analyzing trace with hash -560205859, now seen corresponding path program 1 times [2020-10-14 09:07:27,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:27,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181085551] [2020-10-14 09:07:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:27,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:27,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:28,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:28,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:28,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:28,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:28,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:28,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:29,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:29,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:29,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:29,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:29,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:30,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:30,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:30,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:30,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:30,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:30,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:30,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:31,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:32,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:32,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 09:07:32,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-14 09:07:32,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:07:32,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:32,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:07:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:07:32,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 09:07:32,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:33,163 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:07:33,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:33,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:33,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:33,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:33,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:33,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:07:33,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:33,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:33,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:33,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:33,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:07:33,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:33,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181085551] [2020-10-14 09:07:33,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:33,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:07:33,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939793920] [2020-10-14 09:07:33,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:07:33,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:33,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:07:33,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:07:33,200 INFO L87 Difference]: Start difference. First operand 6591 states and 9198 transitions. Second operand 6 states. [2020-10-14 09:07:33,595 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 09:07:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:35,003 INFO L93 Difference]: Finished difference Result 8049 states and 11290 transitions. [2020-10-14 09:07:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:07:35,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-14 09:07:35,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:35,008 INFO L225 Difference]: With dead ends: 8049 [2020-10-14 09:07:35,008 INFO L226 Difference]: Without dead ends: 4309 [2020-10-14 09:07:35,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:07:35,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2020-10-14 09:07:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 2648. [2020-10-14 09:07:35,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2648 states. [2020-10-14 09:07:35,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 3625 transitions. [2020-10-14 09:07:35,233 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 3625 transitions. Word has length 59 [2020-10-14 09:07:35,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:35,233 INFO L479 AbstractCegarLoop]: Abstraction has 2648 states and 3625 transitions. [2020-10-14 09:07:35,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:07:35,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 3625 transitions. [2020-10-14 09:07:35,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 09:07:35,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:35,235 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] [2020-10-14 09:07:35,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:07:35,235 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:35,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:35,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1131243407, now seen corresponding path program 1 times [2020-10-14 09:07:35,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:35,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939294528] [2020-10-14 09:07:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:35,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:35,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:35,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:35,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:35,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:36,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:38,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:38,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 09:07:38,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:07:38,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3290 [2020-10-14 09:07:38,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:38,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:38,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:07:38,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:07:38,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 09:07:38,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:38,993 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:07:38,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:39,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:39,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:39,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:39,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:39,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:07:39,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:39,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:39,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:39,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:39,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:39,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:39,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:39,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939294528] [2020-10-14 09:07:39,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:39,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:07:39,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097429523] [2020-10-14 09:07:39,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:07:39,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:39,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:07:39,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:07:39,021 INFO L87 Difference]: Start difference. First operand 2648 states and 3625 transitions. Second operand 9 states. [2020-10-14 09:07:39,419 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 09:07:41,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:41,421 INFO L93 Difference]: Finished difference Result 4386 states and 6062 transitions. [2020-10-14 09:07:41,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:07:41,422 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-14 09:07:41,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:41,427 INFO L225 Difference]: With dead ends: 4386 [2020-10-14 09:07:41,427 INFO L226 Difference]: Without dead ends: 4382 [2020-10-14 09:07:41,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 09:07:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2020-10-14 09:07:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 2644. [2020-10-14 09:07:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2644 states. [2020-10-14 09:07:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3621 transitions. [2020-10-14 09:07:41,844 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3621 transitions. Word has length 60 [2020-10-14 09:07:41,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:41,845 INFO L479 AbstractCegarLoop]: Abstraction has 2644 states and 3621 transitions. [2020-10-14 09:07:41,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:07:41,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3621 transitions. [2020-10-14 09:07:41,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 09:07:41,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:41,847 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] [2020-10-14 09:07:41,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:07:41,847 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:41,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:41,848 INFO L82 PathProgramCache]: Analyzing trace with hash 668709274, now seen corresponding path program 1 times [2020-10-14 09:07:41,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:41,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318284402] [2020-10-14 09:07:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:41,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:41,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:42,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:42,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:42,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:43,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:43,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:43,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:44,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:44,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:44,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:44,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:45,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:45,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:45,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:45,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:46,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:46,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 09:07:46,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:07:46,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 09:07:46,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:46,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:07:46,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:07:46,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 09:07:46,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:47,345 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:07:47,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:47,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:47,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:47,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:47,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:47,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:07:47,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:47,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:47,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:47,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:47,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:47,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:47,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:47,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318284402] [2020-10-14 09:07:47,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:47,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:07:47,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292716454] [2020-10-14 09:07:47,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:07:47,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:47,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:07:47,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:07:47,373 INFO L87 Difference]: Start difference. First operand 2644 states and 3621 transitions. Second operand 9 states. [2020-10-14 09:07:47,765 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-14 09:07:49,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:49,188 INFO L93 Difference]: Finished difference Result 3606 states and 4968 transitions. [2020-10-14 09:07:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:07:49,188 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-14 09:07:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:49,191 INFO L225 Difference]: With dead ends: 3606 [2020-10-14 09:07:49,191 INFO L226 Difference]: Without dead ends: 3085 [2020-10-14 09:07:49,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 09:07:49,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2020-10-14 09:07:49,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 2643. [2020-10-14 09:07:49,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2643 states. [2020-10-14 09:07:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3619 transitions. [2020-10-14 09:07:49,413 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3619 transitions. Word has length 60 [2020-10-14 09:07:49,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:49,413 INFO L479 AbstractCegarLoop]: Abstraction has 2643 states and 3619 transitions. [2020-10-14 09:07:49,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:07:49,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3619 transitions. [2020-10-14 09:07:49,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 09:07:49,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:49,415 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] [2020-10-14 09:07:49,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:07:49,415 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:49,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:49,416 INFO L82 PathProgramCache]: Analyzing trace with hash 224351670, now seen corresponding path program 1 times [2020-10-14 09:07:49,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:49,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21478103] [2020-10-14 09:07:49,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:49,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:49,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:49,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:50,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:50,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:50,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:52,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:52,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 09:07:52,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:07:52,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2680 [2020-10-14 09:07:52,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:52,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:07:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:07:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 09:07:52,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:52,579 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:07:52,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:52,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:52,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:52,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:52,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:52,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:07:52,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:52,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:52,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:52,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:52,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21478103] [2020-10-14 09:07:52,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:52,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:07:52,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141799297] [2020-10-14 09:07:52,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:07:52,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:52,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:07:52,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:07:52,610 INFO L87 Difference]: Start difference. First operand 2643 states and 3619 transitions. Second operand 9 states. [2020-10-14 09:07:53,019 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-14 09:07:55,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:55,137 INFO L93 Difference]: Finished difference Result 5466 states and 7596 transitions. [2020-10-14 09:07:55,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:07:55,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-14 09:07:55,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:55,142 INFO L225 Difference]: With dead ends: 5466 [2020-10-14 09:07:55,142 INFO L226 Difference]: Without dead ends: 5455 [2020-10-14 09:07:55,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-14 09:07:55,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2020-10-14 09:07:55,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 2632. [2020-10-14 09:07:55,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2632 states. [2020-10-14 09:07:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2632 states to 2632 states and 3607 transitions. [2020-10-14 09:07:55,404 INFO L78 Accepts]: Start accepts. Automaton has 2632 states and 3607 transitions. Word has length 60 [2020-10-14 09:07:55,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:55,404 INFO L479 AbstractCegarLoop]: Abstraction has 2632 states and 3607 transitions. [2020-10-14 09:07:55,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:07:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2632 states and 3607 transitions. [2020-10-14 09:07:55,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:07:55,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:55,407 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] [2020-10-14 09:07:55,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 09:07:55,407 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:55,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:55,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1823621868, now seen corresponding path program 1 times [2020-10-14 09:07:55,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:55,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465880701] [2020-10-14 09:07:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:55,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:55,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:55,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:55,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:55,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:55,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:57,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:57,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:07:57,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:07:57,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1820 [2020-10-14 09:07:57,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:57,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:57,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:57,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 09:07:57,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 09:07:57,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:57,606 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:07:57,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:57,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:57,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:57,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:57,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:57,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:07:57,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:57,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:57,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:57,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:57,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:57,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:57,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465880701] [2020-10-14 09:07:57,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:57,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:07:57,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982212941] [2020-10-14 09:07:57,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:07:57,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:57,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:07:57,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:07:57,633 INFO L87 Difference]: Start difference. First operand 2632 states and 3607 transitions. Second operand 4 states. [2020-10-14 09:07:58,024 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-14 09:07:59,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:59,316 INFO L93 Difference]: Finished difference Result 6332 states and 8833 transitions. [2020-10-14 09:07:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:07:59,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 09:07:59,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:59,320 INFO L225 Difference]: With dead ends: 6332 [2020-10-14 09:07:59,320 INFO L226 Difference]: Without dead ends: 4442 [2020-10-14 09:07:59,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:07:59,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2020-10-14 09:07:59,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 4440. [2020-10-14 09:07:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4440 states. [2020-10-14 09:07:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 6083 transitions. [2020-10-14 09:07:59,766 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 6083 transitions. Word has length 67 [2020-10-14 09:07:59,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:59,766 INFO L479 AbstractCegarLoop]: Abstraction has 4440 states and 6083 transitions. [2020-10-14 09:07:59,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:07:59,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 6083 transitions. [2020-10-14 09:07:59,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:07:59,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:59,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:07:59,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 09:07:59,768 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:59,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:59,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1537280012, now seen corresponding path program 1 times [2020-10-14 09:07:59,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:59,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080702416] [2020-10-14 09:07:59,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:59,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:59,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:59,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:59,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:01,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:01,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:08:01,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:08:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1547 [2020-10-14 09:08:01,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:01,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 09:08:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 09:08:01,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:01,719 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:08:01,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:01,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:01,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:01,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:01,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:01,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:08:01,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:01,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:01,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:01,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:01,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:01,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080702416] [2020-10-14 09:08:01,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:01,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:01,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911521735] [2020-10-14 09:08:01,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:01,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:01,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:01,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:01,757 INFO L87 Difference]: Start difference. First operand 4440 states and 6083 transitions. Second operand 4 states. [2020-10-14 09:08:02,154 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-14 09:08:04,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:04,015 INFO L93 Difference]: Finished difference Result 11452 states and 15861 transitions. [2020-10-14 09:08:04,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:04,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-14 09:08:04,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:04,023 INFO L225 Difference]: With dead ends: 11452 [2020-10-14 09:08:04,023 INFO L226 Difference]: Without dead ends: 7770 [2020-10-14 09:08:04,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:04,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7770 states. [2020-10-14 09:08:04,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7770 to 7288. [2020-10-14 09:08:04,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7288 states. [2020-10-14 09:08:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7288 states to 7288 states and 10059 transitions. [2020-10-14 09:08:04,792 INFO L78 Accepts]: Start accepts. Automaton has 7288 states and 10059 transitions. Word has length 68 [2020-10-14 09:08:04,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:04,792 INFO L479 AbstractCegarLoop]: Abstraction has 7288 states and 10059 transitions. [2020-10-14 09:08:04,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:04,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7288 states and 10059 transitions. [2020-10-14 09:08:04,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:08:04,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:04,794 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] [2020-10-14 09:08:04,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 09:08:04,794 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:04,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:04,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1590017297, now seen corresponding path program 1 times [2020-10-14 09:08:04,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:04,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561810521] [2020-10-14 09:08:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:04,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:04,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:04,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:05,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:05,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:05,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:05,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:05,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:08:05,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:08:05,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 923 [2020-10-14 09:08:05,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:05,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 09:08:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 09:08:05,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:06,109 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:08:06,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:06,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:06,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:06,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:06,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:06,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:08:06,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:06,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:06,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:06,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:06,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:06,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:06,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:06,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561810521] [2020-10-14 09:08:06,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:06,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:06,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245838522] [2020-10-14 09:08:06,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:06,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:06,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:06,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:06,135 INFO L87 Difference]: Start difference. First operand 7288 states and 10059 transitions. Second operand 4 states. [2020-10-14 09:08:06,514 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-14 09:08:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:09,087 INFO L93 Difference]: Finished difference Result 19628 states and 27133 transitions. [2020-10-14 09:08:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:09,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-14 09:08:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:09,101 INFO L225 Difference]: With dead ends: 19628 [2020-10-14 09:08:09,101 INFO L226 Difference]: Without dead ends: 13098 [2020-10-14 09:08:09,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:09,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13098 states. [2020-10-14 09:08:10,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13098 to 12056. [2020-10-14 09:08:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12056 states. [2020-10-14 09:08:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12056 states to 12056 states and 16427 transitions. [2020-10-14 09:08:10,468 INFO L78 Accepts]: Start accepts. Automaton has 12056 states and 16427 transitions. Word has length 69 [2020-10-14 09:08:10,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:10,468 INFO L479 AbstractCegarLoop]: Abstraction has 12056 states and 16427 transitions. [2020-10-14 09:08:10,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 12056 states and 16427 transitions. [2020-10-14 09:08:10,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 09:08:10,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:10,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:08:10,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 09:08:10,470 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:10,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:10,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1234704297, now seen corresponding path program 1 times [2020-10-14 09:08:10,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:10,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916277436] [2020-10-14 09:08:10,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:10,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:10,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:10,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:10,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:10,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:10,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:10,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:11,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:11,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 09:08:11,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:08:11,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-10-14 09:08:11,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:11,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:11,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:08:11,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 09:08:11,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 09:08:11,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:11,911 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:08:11,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:11,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:11,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:11,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:11,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:11,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:08:11,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:11,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:11,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:11,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916277436] [2020-10-14 09:08:11,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:11,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:08:11,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278070895] [2020-10-14 09:08:11,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:08:11,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:11,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:08:11,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:08:11,952 INFO L87 Difference]: Start difference. First operand 12056 states and 16427 transitions. Second operand 6 states. [2020-10-14 09:08:14,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:14,768 INFO L93 Difference]: Finished difference Result 14818 states and 20127 transitions. [2020-10-14 09:08:14,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:08:14,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-14 09:08:14,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:14,779 INFO L225 Difference]: With dead ends: 14818 [2020-10-14 09:08:14,780 INFO L226 Difference]: Without dead ends: 11267 [2020-10-14 09:08:14,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:08:14,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11267 states. [2020-10-14 09:08:16,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11267 to 10834. [2020-10-14 09:08:16,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10834 states. [2020-10-14 09:08:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10834 states to 10834 states and 14745 transitions. [2020-10-14 09:08:16,152 INFO L78 Accepts]: Start accepts. Automaton has 10834 states and 14745 transitions. Word has length 70 [2020-10-14 09:08:16,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:16,152 INFO L479 AbstractCegarLoop]: Abstraction has 10834 states and 14745 transitions. [2020-10-14 09:08:16,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:08:16,152 INFO L276 IsEmpty]: Start isEmpty. Operand 10834 states and 14745 transitions. [2020-10-14 09:08:16,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 09:08:16,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:16,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:08:16,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 09:08:16,154 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:16,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:16,154 INFO L82 PathProgramCache]: Analyzing trace with hash 734092754, now seen corresponding path program 1 times [2020-10-14 09:08:16,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:16,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787974494] [2020-10-14 09:08:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:16,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:17,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:17,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 09:08:17,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:08:17,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1802 [2020-10-14 09:08:17,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:17,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:08:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 09:08:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:08:17,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:18,364 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:08:18,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:18,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:18,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:18,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:18,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:18,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:08:18,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:18,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:18,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:18,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:18,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:18,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:18,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787974494] [2020-10-14 09:08:18,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:18,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:08:18,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381169663] [2020-10-14 09:08:18,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:08:18,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:18,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:08:18,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:08:18,390 INFO L87 Difference]: Start difference. First operand 10834 states and 14745 transitions. Second operand 6 states. [2020-10-14 09:08:22,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:22,151 INFO L93 Difference]: Finished difference Result 19699 states and 26342 transitions. [2020-10-14 09:08:22,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:08:22,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-14 09:08:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:22,172 INFO L225 Difference]: With dead ends: 19699 [2020-10-14 09:08:22,172 INFO L226 Difference]: Without dead ends: 19692 [2020-10-14 09:08:22,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:08:22,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19692 states. [2020-10-14 09:08:23,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19692 to 11338. [2020-10-14 09:08:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11338 states. [2020-10-14 09:08:23,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11338 states to 11338 states and 15247 transitions. [2020-10-14 09:08:23,779 INFO L78 Accepts]: Start accepts. Automaton has 11338 states and 15247 transitions. Word has length 73 [2020-10-14 09:08:23,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:23,780 INFO L479 AbstractCegarLoop]: Abstraction has 11338 states and 15247 transitions. [2020-10-14 09:08:23,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:08:23,780 INFO L276 IsEmpty]: Start isEmpty. Operand 11338 states and 15247 transitions. [2020-10-14 09:08:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 09:08:23,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:23,782 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] [2020-10-14 09:08:23,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 09:08:23,782 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:23,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:23,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1000638395, now seen corresponding path program 1 times [2020-10-14 09:08:23,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:23,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533914718] [2020-10-14 09:08:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:23,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:23,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:23,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:23,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:25,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:25,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 09:08:25,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:08:25,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-10-14 09:08:25,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:25,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:25,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:25,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 09:08:25,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:08:25,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:25,810 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:08:25,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:25,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:25,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:25,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:08:25,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:25,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:25,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533914718] [2020-10-14 09:08:25,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:25,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:25,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785210831] [2020-10-14 09:08:25,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:25,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:25,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:25,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:25,837 INFO L87 Difference]: Start difference. First operand 11338 states and 15247 transitions. Second operand 4 states. [2020-10-14 09:08:26,232 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 09:08:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:29,806 INFO L93 Difference]: Finished difference Result 30089 states and 40332 transitions. [2020-10-14 09:08:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:29,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-14 09:08:29,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:29,828 INFO L225 Difference]: With dead ends: 30089 [2020-10-14 09:08:29,828 INFO L226 Difference]: Without dead ends: 19314 [2020-10-14 09:08:29,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19314 states. [2020-10-14 09:08:32,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19314 to 18973. [2020-10-14 09:08:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18973 states. [2020-10-14 09:08:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18973 states to 18973 states and 24877 transitions. [2020-10-14 09:08:32,457 INFO L78 Accepts]: Start accepts. Automaton has 18973 states and 24877 transitions. Word has length 74 [2020-10-14 09:08:32,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:32,458 INFO L479 AbstractCegarLoop]: Abstraction has 18973 states and 24877 transitions. [2020-10-14 09:08:32,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:32,458 INFO L276 IsEmpty]: Start isEmpty. Operand 18973 states and 24877 transitions. [2020-10-14 09:08:32,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 09:08:32,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:32,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:08:32,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 09:08:32,461 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:32,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:32,461 INFO L82 PathProgramCache]: Analyzing trace with hash 537610048, now seen corresponding path program 1 times [2020-10-14 09:08:32,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:32,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927091949] [2020-10-14 09:08:32,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:32,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:32,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:32,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:32,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:33,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:33,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 09:08:33,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:08:33,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1433 [2020-10-14 09:08:33,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:33,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:33,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:33,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 09:08:33,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 09:08:33,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:34,397 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:08:34,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:34,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:34,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:34,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:34,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:08:34,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:34,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:34,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927091949] [2020-10-14 09:08:34,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:34,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:34,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026317366] [2020-10-14 09:08:34,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:34,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:34,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:34,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:34,423 INFO L87 Difference]: Start difference. First operand 18973 states and 24877 transitions. Second operand 4 states. [2020-10-14 09:08:34,812 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-14 09:08:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:39,647 INFO L93 Difference]: Finished difference Result 45210 states and 59751 transitions. [2020-10-14 09:08:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:39,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-14 09:08:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:39,676 INFO L225 Difference]: With dead ends: 45210 [2020-10-14 09:08:39,676 INFO L226 Difference]: Without dead ends: 26796 [2020-10-14 09:08:39,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:39,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26796 states. [2020-10-14 09:08:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26796 to 26755. [2020-10-14 09:08:43,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26755 states. [2020-10-14 09:08:43,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26755 states to 26755 states and 34935 transitions. [2020-10-14 09:08:43,498 INFO L78 Accepts]: Start accepts. Automaton has 26755 states and 34935 transitions. Word has length 75 [2020-10-14 09:08:43,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:43,498 INFO L479 AbstractCegarLoop]: Abstraction has 26755 states and 34935 transitions. [2020-10-14 09:08:43,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:43,498 INFO L276 IsEmpty]: Start isEmpty. Operand 26755 states and 34935 transitions. [2020-10-14 09:08:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 09:08:43,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:43,503 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 09:08:43,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 09:08:43,503 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:43,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:43,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1030854856, now seen corresponding path program 1 times [2020-10-14 09:08:43,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:43,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681090599] [2020-10-14 09:08:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:43,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:43,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:43,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:43,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:43,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:44,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:44,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:47,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:47,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:47,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:47,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:48,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:48,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:48,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 09:08:48,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:08:48,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:08:48,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:48,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 09:08:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 09:08:48,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:49,059 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-14 09:08:49,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:49,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:49,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:49,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:49,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:49,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:08:49,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:49,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:49,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:49,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:49,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:49,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:49,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681090599] [2020-10-14 09:08:49,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:49,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:49,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103607445] [2020-10-14 09:08:49,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:49,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:49,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:49,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:49,088 INFO L87 Difference]: Start difference. First operand 26755 states and 34935 transitions. Second operand 4 states. [2020-10-14 09:08:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:53,635 INFO L93 Difference]: Finished difference Result 50507 states and 66043 transitions. [2020-10-14 09:08:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:08:53,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-10-14 09:08:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:53,659 INFO L225 Difference]: With dead ends: 50507 [2020-10-14 09:08:53,659 INFO L226 Difference]: Without dead ends: 24311 [2020-10-14 09:08:53,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:53,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24311 states. [2020-10-14 09:08:57,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24311 to 24270. [2020-10-14 09:08:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24270 states. [2020-10-14 09:08:57,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24270 states to 24270 states and 31085 transitions. [2020-10-14 09:08:57,257 INFO L78 Accepts]: Start accepts. Automaton has 24270 states and 31085 transitions. Word has length 92 [2020-10-14 09:08:57,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:57,258 INFO L479 AbstractCegarLoop]: Abstraction has 24270 states and 31085 transitions. [2020-10-14 09:08:57,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:57,258 INFO L276 IsEmpty]: Start isEmpty. Operand 24270 states and 31085 transitions. [2020-10-14 09:08:57,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 09:08:57,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:57,262 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] [2020-10-14 09:08:57,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 09:08:57,262 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:57,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:57,263 INFO L82 PathProgramCache]: Analyzing trace with hash 416198303, now seen corresponding path program 1 times [2020-10-14 09:08:57,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:57,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218123179] [2020-10-14 09:08:57,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:57,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:57,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:57,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:57,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:57,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:57,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:58,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking...