/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=NARROWEST --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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:11:44,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:11:44,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:11:44,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:11:44,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:11:44,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:11:44,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:11:44,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:11:44,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:11:44,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:11:44,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:11:44,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:11:44,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:11:44,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:11:44,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:11:44,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:11:44,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:11:44,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:11:44,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:11:44,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:11:44,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:11:44,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:11:44,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:11:44,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:11:44,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:11:44,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:11:44,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:11:44,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:11:44,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:11:44,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:11:44,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:11:44,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:11:44,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:11:44,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:11:44,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:11:44,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:11:44,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:11:44,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:11:44,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:11:44,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:11:44,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:11:44,521 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 [2020-10-13 14:11:44,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:11:44,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:11:44,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:11:44,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:11:44,547 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:11:44,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:11:44,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:11:44,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:11:44,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:11:44,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:11:44,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:11:44,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:11:44,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:11:44,551 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:11:44,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:11:44,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:11:44,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:11:44,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:11:44,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:11:44,553 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:11:44,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:11:44,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:11:44,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:11:44,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:11:44,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:11:44,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:11:44,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:11:44,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:11:44,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:11:44,557 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:11:44,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:11:44,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:11:44,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:11:44,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:11:44,887 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:11:44,887 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:11:44,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/400af9357/040767ef3d564cfeaa5359892d8f2091/FLAG862085e98 [2020-10-13 14:11:45,582 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:11:45,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:11:45,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/400af9357/040767ef3d564cfeaa5359892d8f2091/FLAG862085e98 [2020-10-13 14:11:45,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/400af9357/040767ef3d564cfeaa5359892d8f2091 [2020-10-13 14:11:45,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:11:45,806 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:11:45,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:11:45,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:11:45,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:11:45,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:11:45" (1/1) ... [2020-10-13 14:11:45,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10140435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:11:45, skipping insertion in model container [2020-10-13 14:11:45,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:11:45" (1/1) ... [2020-10-13 14:11:45,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:11:45,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:11:46,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:11:46,563 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:11:46,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:11:46,813 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:11:46,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:11:46 WrapperNode [2020-10-13 14:11:46,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:11:46,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:11:46,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:11:46,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:11:46,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:11:46" (1/1) ... [2020-10-13 14:11:46,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:11:46" (1/1) ... [2020-10-13 14:11:46,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:11:46" (1/1) ... [2020-10-13 14:11:46,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:11:46" (1/1) ... [2020-10-13 14:11:46,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:11:46" (1/1) ... [2020-10-13 14:11:47,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:11:46" (1/1) ... [2020-10-13 14:11:47,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:11:46" (1/1) ... [2020-10-13 14:11:47,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:11:47,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:11:47,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:11:47,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:11:47,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:11:46" (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 [2020-10-13 14:11:47,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:11:47,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:11:47,156 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:11:47,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:11:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:11:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:11:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:11:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:11:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:11:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:11:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:11:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:11:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:11:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:11:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:11:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:11:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:11:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:11:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:11:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:11:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:11:48,644 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:11:48,644 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:11:48,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:11:48 BoogieIcfgContainer [2020-10-13 14:11:48,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:11:48,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:11:48,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:11:48,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:11:48,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:11:45" (1/3) ... [2020-10-13 14:11:48,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385e0b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:11:48, skipping insertion in model container [2020-10-13 14:11:48,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:11:46" (2/3) ... [2020-10-13 14:11:48,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385e0b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:11:48, skipping insertion in model container [2020-10-13 14:11:48,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:11:48" (3/3) ... [2020-10-13 14:11:48,660 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:11:48,670 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:11:48,679 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-13 14:11:48,693 INFO L251 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-13 14:11:48,722 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:11:48,723 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:11:48,723 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:11:48,723 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:11:48,723 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:11:48,723 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:11:48,724 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:11:48,724 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:11:48,754 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states. [2020-10-13 14:11:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:11:48,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:48,772 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] [2020-10-13 14:11:48,773 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:48,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:48,780 INFO L82 PathProgramCache]: Analyzing trace with hash 2049464648, now seen corresponding path program 1 times [2020-10-13 14:11:48,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:48,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616467952] [2020-10-13 14:11:48,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:49,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:52,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:53,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:54,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:54,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:11:54,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:11:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:11:54,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:11:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:11:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 14:11:54,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:11:54,687 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:11:54,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:54,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:54,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:54,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:54,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 14:11:54,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:54,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:54,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616467952] [2020-10-13 14:11:54,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:54,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:11:54,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922389615] [2020-10-13 14:11:54,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:11:54,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:54,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:11:54,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:11:54,842 INFO L87 Difference]: Start difference. First operand 363 states. Second operand 7 states. [2020-10-13 14:11:55,315 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:11:58,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:58,354 INFO L93 Difference]: Finished difference Result 1314 states and 2128 transitions. [2020-10-13 14:11:58,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:11:58,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-13 14:11:58,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:58,397 INFO L225 Difference]: With dead ends: 1314 [2020-10-13 14:11:58,397 INFO L226 Difference]: Without dead ends: 1051 [2020-10-13 14:11:58,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:11:58,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2020-10-13 14:11:58,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 567. [2020-10-13 14:11:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-10-13 14:11:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 758 transitions. [2020-10-13 14:11:58,553 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 758 transitions. Word has length 63 [2020-10-13 14:11:58,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:58,554 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 758 transitions. [2020-10-13 14:11:58,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:11:58,554 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 758 transitions. [2020-10-13 14:11:58,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:11:58,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:58,568 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] [2020-10-13 14:11:58,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:11:58,568 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:58,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:58,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1956051638, now seen corresponding path program 1 times [2020-10-13 14:11:58,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:58,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810145261] [2020-10-13 14:11:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:58,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:58,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:58,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:58,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:59,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:59,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:00,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:03,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:12:03,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:12:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:12:03,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:12:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:12:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:12:03,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 14:12:03,999 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:12:04,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:04,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:04,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:04,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:04,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:04,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:12:04,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:04,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:04,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810145261] [2020-10-13 14:12:04,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:04,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:12:04,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945639014] [2020-10-13 14:12:04,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:12:04,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:04,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:12:04,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:12:04,051 INFO L87 Difference]: Start difference. First operand 567 states and 758 transitions. Second operand 7 states. [2020-10-13 14:12:04,383 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:12:06,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:06,589 INFO L93 Difference]: Finished difference Result 2140 states and 2984 transitions. [2020-10-13 14:12:06,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:12:06,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:12:06,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:06,603 INFO L225 Difference]: With dead ends: 2140 [2020-10-13 14:12:06,604 INFO L226 Difference]: Without dead ends: 1856 [2020-10-13 14:12:06,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:12:06,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2020-10-13 14:12:06,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 859. [2020-10-13 14:12:06,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2020-10-13 14:12:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1199 transitions. [2020-10-13 14:12:06,657 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1199 transitions. Word has length 64 [2020-10-13 14:12:06,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:06,658 INFO L479 AbstractCegarLoop]: Abstraction has 859 states and 1199 transitions. [2020-10-13 14:12:06,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:12:06,658 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1199 transitions. [2020-10-13 14:12:06,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:12:06,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:06,660 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] [2020-10-13 14:12:06,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:12:06,661 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:06,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:06,661 INFO L82 PathProgramCache]: Analyzing trace with hash 783336144, now seen corresponding path program 1 times [2020-10-13 14:12:06,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:06,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259722121] [2020-10-13 14:12:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:06,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:06,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:06,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:06,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:07,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:07,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:10,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:11,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:11,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:11,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:12:11,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:12:11,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:12:11,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:12:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:12:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:12:11,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:12,028 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:12:12,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:12,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:12,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:12,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:12,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:12,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:12:12,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:12,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259722121] [2020-10-13 14:12:12,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:12,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:12:12,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212096877] [2020-10-13 14:12:12,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:12:12,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:12,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:12:12,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:12:12,076 INFO L87 Difference]: Start difference. First operand 859 states and 1199 transitions. Second operand 7 states. [2020-10-13 14:12:12,414 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:12:14,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:14,561 INFO L93 Difference]: Finished difference Result 3801 states and 5493 transitions. [2020-10-13 14:12:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:12:14,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:12:14,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:14,586 INFO L225 Difference]: With dead ends: 3801 [2020-10-13 14:12:14,588 INFO L226 Difference]: Without dead ends: 3283 [2020-10-13 14:12:14,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:12:14,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2020-10-13 14:12:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 1511. [2020-10-13 14:12:14,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1511 states. [2020-10-13 14:12:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2179 transitions. [2020-10-13 14:12:14,756 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2179 transitions. Word has length 64 [2020-10-13 14:12:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:14,759 INFO L479 AbstractCegarLoop]: Abstraction has 1511 states and 2179 transitions. [2020-10-13 14:12:14,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:12:14,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2179 transitions. [2020-10-13 14:12:14,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 14:12:14,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:14,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:14,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:12:14,765 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:14,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:14,767 INFO L82 PathProgramCache]: Analyzing trace with hash 2131578118, now seen corresponding path program 1 times [2020-10-13 14:12:14,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:14,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122020927] [2020-10-13 14:12:14,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:14,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:15,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:15,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:15,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:15,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:16,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:16,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:16,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:16,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:18,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:19,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:19,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:19,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:19,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 14:12:19,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:12:19,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 14:12:19,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:19,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:12:19,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 14:12:19,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:12:19,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:20,351 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:12:20,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:20,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:20,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:20,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:20,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:20,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:12:20,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:20,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:20,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:12:20,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:20,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122020927] [2020-10-13 14:12:20,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:20,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:12:20,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334051579] [2020-10-13 14:12:20,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:12:20,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:20,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:12:20,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:12:20,407 INFO L87 Difference]: Start difference. First operand 1511 states and 2179 transitions. Second operand 9 states. [2020-10-13 14:12:20,764 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:12:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:22,678 INFO L93 Difference]: Finished difference Result 5636 states and 8347 transitions. [2020-10-13 14:12:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:12:22,679 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-13 14:12:22,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:22,703 INFO L225 Difference]: With dead ends: 5636 [2020-10-13 14:12:22,704 INFO L226 Difference]: Without dead ends: 4781 [2020-10-13 14:12:22,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:12:22,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2020-10-13 14:12:22,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 1796. [2020-10-13 14:12:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1796 states. [2020-10-13 14:12:22,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2593 transitions. [2020-10-13 14:12:22,863 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2593 transitions. Word has length 65 [2020-10-13 14:12:22,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:22,863 INFO L479 AbstractCegarLoop]: Abstraction has 1796 states and 2593 transitions. [2020-10-13 14:12:22,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:12:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2593 transitions. [2020-10-13 14:12:22,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 14:12:22,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:22,866 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] [2020-10-13 14:12:22,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:12:22,867 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:22,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:22,867 INFO L82 PathProgramCache]: Analyzing trace with hash 886737871, now seen corresponding path program 1 times [2020-10-13 14:12:22,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:22,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364826741] [2020-10-13 14:12:22,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:22,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:22,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:23,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:24,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:25,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:25,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:27,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:27,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:27,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:27,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:27,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:27,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:27,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 14:12:27,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:12:27,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 14:12:27,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:12:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:12:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:12:27,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:28,337 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:12:28,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:28,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:28,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:28,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:28,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:12:28,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:28,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:28,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:28,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:28,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:28,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364826741] [2020-10-13 14:12:28,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:28,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:12:28,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604982967] [2020-10-13 14:12:28,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:12:28,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:28,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:12:28,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:12:28,374 INFO L87 Difference]: Start difference. First operand 1796 states and 2593 transitions. Second operand 7 states. [2020-10-13 14:12:28,701 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:12:30,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:30,848 INFO L93 Difference]: Finished difference Result 5960 states and 8703 transitions. [2020-10-13 14:12:30,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:12:30,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-13 14:12:30,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:30,870 INFO L225 Difference]: With dead ends: 5960 [2020-10-13 14:12:30,870 INFO L226 Difference]: Without dead ends: 5120 [2020-10-13 14:12:30,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:12:30,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5120 states. [2020-10-13 14:12:31,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5120 to 2330. [2020-10-13 14:12:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2330 states. [2020-10-13 14:12:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3391 transitions. [2020-10-13 14:12:31,105 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3391 transitions. Word has length 65 [2020-10-13 14:12:31,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:31,106 INFO L479 AbstractCegarLoop]: Abstraction has 2330 states and 3391 transitions. [2020-10-13 14:12:31,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:12:31,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3391 transitions. [2020-10-13 14:12:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 14:12:31,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:31,109 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] [2020-10-13 14:12:31,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:12:31,109 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:31,110 INFO L82 PathProgramCache]: Analyzing trace with hash 2059453365, now seen corresponding path program 1 times [2020-10-13 14:12:31,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:31,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104469967] [2020-10-13 14:12:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:31,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:31,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:31,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:33,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:34,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:34,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:36,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:36,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 14:12:36,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:12:36,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:12:36,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:12:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:12:36,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:12:36,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:36,488 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:12:36,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:36,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:36,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:36,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:36,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:36,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:12:36,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:36,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:36,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:12:36,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:36,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104469967] [2020-10-13 14:12:36,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:36,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:12:36,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575543133] [2020-10-13 14:12:36,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:12:36,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:36,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:12:36,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:12:36,546 INFO L87 Difference]: Start difference. First operand 2330 states and 3391 transitions. Second operand 7 states. [2020-10-13 14:12:36,929 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:12:38,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:38,799 INFO L93 Difference]: Finished difference Result 6464 states and 9475 transitions. [2020-10-13 14:12:38,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:12:38,800 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-13 14:12:38,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:38,818 INFO L225 Difference]: With dead ends: 6464 [2020-10-13 14:12:38,819 INFO L226 Difference]: Without dead ends: 5645 [2020-10-13 14:12:38,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:12:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2020-10-13 14:12:39,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 2700. [2020-10-13 14:12:39,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2700 states. [2020-10-13 14:12:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3949 transitions. [2020-10-13 14:12:39,056 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3949 transitions. Word has length 65 [2020-10-13 14:12:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:39,056 INFO L479 AbstractCegarLoop]: Abstraction has 2700 states and 3949 transitions. [2020-10-13 14:12:39,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:12:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3949 transitions. [2020-10-13 14:12:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 14:12:39,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:39,059 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] [2020-10-13 14:12:39,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:12:39,060 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:39,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:39,060 INFO L82 PathProgramCache]: Analyzing trace with hash 956094724, now seen corresponding path program 1 times [2020-10-13 14:12:39,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:39,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949675846] [2020-10-13 14:12:39,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:39,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:39,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:39,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:39,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:39,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:41,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:44,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:44,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 14:12:44,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:12:44,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 14:12:44,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:44,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:12:44,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:12:44,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:12:44,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:12:44,492 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:12:44,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:44,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:44,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:44,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:44,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:12:44,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:44,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:44,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:44,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949675846] [2020-10-13 14:12:44,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:44,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:12:44,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375756789] [2020-10-13 14:12:44,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:12:44,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:44,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:12:44,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:12:44,529 INFO L87 Difference]: Start difference. First operand 2700 states and 3949 transitions. Second operand 7 states. [2020-10-13 14:12:44,867 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:12:47,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:47,028 INFO L93 Difference]: Finished difference Result 7081 states and 10394 transitions. [2020-10-13 14:12:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:12:47,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-13 14:12:47,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:47,052 INFO L225 Difference]: With dead ends: 7081 [2020-10-13 14:12:47,052 INFO L226 Difference]: Without dead ends: 5459 [2020-10-13 14:12:47,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:12:47,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5459 states. [2020-10-13 14:12:47,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5459 to 2422. [2020-10-13 14:12:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2422 states. [2020-10-13 14:12:47,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3530 transitions. [2020-10-13 14:12:47,274 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3530 transitions. Word has length 65 [2020-10-13 14:12:47,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:47,275 INFO L479 AbstractCegarLoop]: Abstraction has 2422 states and 3530 transitions. [2020-10-13 14:12:47,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:12:47,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3530 transitions. [2020-10-13 14:12:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:12:47,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:47,283 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] [2020-10-13 14:12:47,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:12:47,283 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:47,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:47,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1281970317, now seen corresponding path program 1 times [2020-10-13 14:12:47,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:47,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132741268] [2020-10-13 14:12:47,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:47,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:47,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:47,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:47,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:50,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:50,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:50,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:50,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:51,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:52,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:52,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:12:52,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:12:52,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:12:52,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:52,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:12:52,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:12:52,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:12:52,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:52,622 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:12:52,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:52,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:52,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:52,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:52,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:12:52,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:12:52,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:52,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132741268] [2020-10-13 14:12:52,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:52,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:12:52,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395130926] [2020-10-13 14:12:52,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:12:52,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:52,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:12:52,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:12:52,667 INFO L87 Difference]: Start difference. First operand 2422 states and 3530 transitions. Second operand 6 states. [2020-10-13 14:12:52,989 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-13 14:12:54,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:54,342 INFO L93 Difference]: Finished difference Result 4017 states and 5832 transitions. [2020-10-13 14:12:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:12:54,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:12:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:54,351 INFO L225 Difference]: With dead ends: 4017 [2020-10-13 14:12:54,351 INFO L226 Difference]: Without dead ends: 3129 [2020-10-13 14:12:54,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:12:54,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2020-10-13 14:12:54,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 2046. [2020-10-13 14:12:54,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2046 states. [2020-10-13 14:12:54,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 2979 transitions. [2020-10-13 14:12:54,586 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 2979 transitions. Word has length 66 [2020-10-13 14:12:54,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:54,586 INFO L479 AbstractCegarLoop]: Abstraction has 2046 states and 2979 transitions. [2020-10-13 14:12:54,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:12:54,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 2979 transitions. [2020-10-13 14:12:54,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:12:54,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:54,589 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] [2020-10-13 14:12:54,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:12:54,590 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:54,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:54,590 INFO L82 PathProgramCache]: Analyzing trace with hash -2142061232, now seen corresponding path program 1 times [2020-10-13 14:12:54,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:54,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462172096] [2020-10-13 14:12:54,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:54,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:54,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:56,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:56,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:56,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:56,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:58,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:58,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:59,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:59,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:59,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:59,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:12:59,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:12:59,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:12:59,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:59,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:12:59,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:12:59,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:12:59,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:12:59,955 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:12:59,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:59,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:59,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:59,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:59,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:12:59,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:12:59,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:59,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462172096] [2020-10-13 14:12:59,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:59,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:12:59,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232872900] [2020-10-13 14:12:59,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:12:59,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:59,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:12:59,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:12:59,999 INFO L87 Difference]: Start difference. First operand 2046 states and 2979 transitions. Second operand 6 states. [2020-10-13 14:13:00,324 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-13 14:13:01,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:01,663 INFO L93 Difference]: Finished difference Result 3365 states and 4877 transitions. [2020-10-13 14:13:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:13:01,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:13:01,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:01,667 INFO L225 Difference]: With dead ends: 3365 [2020-10-13 14:13:01,668 INFO L226 Difference]: Without dead ends: 1870 [2020-10-13 14:13:01,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:13:01,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2020-10-13 14:13:01,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1830. [2020-10-13 14:13:01,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1830 states. [2020-10-13 14:13:01,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2646 transitions. [2020-10-13 14:13:01,834 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2646 transitions. Word has length 66 [2020-10-13 14:13:01,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:01,835 INFO L479 AbstractCegarLoop]: Abstraction has 1830 states and 2646 transitions. [2020-10-13 14:13:01,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:13:01,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2646 transitions. [2020-10-13 14:13:01,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:13:01,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:01,836 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] [2020-10-13 14:13:01,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:13:01,837 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:01,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:01,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1048287760, now seen corresponding path program 1 times [2020-10-13 14:13:01,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:01,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624558060] [2020-10-13 14:13:01,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:01,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:01,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:01,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:02,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:02,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:02,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:03,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:05,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:06,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:06,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:13:06,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:13:06,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:13:06,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:06,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:13:06,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:13:06,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:13:06,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:07,157 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:13:07,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:07,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:07,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:07,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:07,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:07,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:13:07,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:13:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:13:07,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:07,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624558060] [2020-10-13 14:13:07,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:07,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:13:07,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117537473] [2020-10-13 14:13:07,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:13:07,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:07,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:13:07,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:13:07,195 INFO L87 Difference]: Start difference. First operand 1830 states and 2646 transitions. Second operand 6 states. [2020-10-13 14:13:07,517 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-13 14:13:08,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:08,671 INFO L93 Difference]: Finished difference Result 3113 states and 4536 transitions. [2020-10-13 14:13:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:13:08,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:13:08,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:08,678 INFO L225 Difference]: With dead ends: 3113 [2020-10-13 14:13:08,678 INFO L226 Difference]: Without dead ends: 1651 [2020-10-13 14:13:08,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:13:08,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2020-10-13 14:13:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1005. [2020-10-13 14:13:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-10-13 14:13:08,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1424 transitions. [2020-10-13 14:13:08,835 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1424 transitions. Word has length 66 [2020-10-13 14:13:08,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:08,835 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1424 transitions. [2020-10-13 14:13:08,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:13:08,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1424 transitions. [2020-10-13 14:13:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:13:08,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:08,838 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] [2020-10-13 14:13:08,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:13:08,838 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:08,839 INFO L82 PathProgramCache]: Analyzing trace with hash 307813232, now seen corresponding path program 1 times [2020-10-13 14:13:08,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:08,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924184266] [2020-10-13 14:13:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:08,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:09,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:09,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:10,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:10,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:10,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:10,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:11,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:11,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:13,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:13:13,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:13:13,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:13:13,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:13:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 14:13:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:13:13,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:14,277 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:13:14,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:14,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:14,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:14,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:14,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:14,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:13:14,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:14,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:14,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:14,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:14,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:14,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:14,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924184266] [2020-10-13 14:13:14,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:14,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:13:14,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971045469] [2020-10-13 14:13:14,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:13:14,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:14,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:13:14,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:13:14,304 INFO L87 Difference]: Start difference. First operand 1005 states and 1424 transitions. Second operand 9 states. [2020-10-13 14:13:14,620 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:13:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:16,159 INFO L93 Difference]: Finished difference Result 2621 states and 3799 transitions. [2020-10-13 14:13:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 14:13:16,159 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-10-13 14:13:16,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:16,164 INFO L225 Difference]: With dead ends: 2621 [2020-10-13 14:13:16,164 INFO L226 Difference]: Without dead ends: 2004 [2020-10-13 14:13:16,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-13 14:13:16,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2020-10-13 14:13:16,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 990. [2020-10-13 14:13:16,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-10-13 14:13:16,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1395 transitions. [2020-10-13 14:13:16,317 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1395 transitions. Word has length 66 [2020-10-13 14:13:16,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:16,317 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1395 transitions. [2020-10-13 14:13:16,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:13:16,318 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1395 transitions. [2020-10-13 14:13:16,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:13:16,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:16,319 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] [2020-10-13 14:13:16,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:13:16,320 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:16,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:16,320 INFO L82 PathProgramCache]: Analyzing trace with hash -77234929, now seen corresponding path program 1 times [2020-10-13 14:13:16,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:16,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212134349] [2020-10-13 14:13:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:16,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:17,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:17,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:17,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:17,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:21,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:21,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:13:21,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:13:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:13:21,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:13:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:13:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:13:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:21,662 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:13:21,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:21,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:21,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:21,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:21,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:13:21,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:13:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:13:21,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:21,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212134349] [2020-10-13 14:13:21,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:21,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:13:21,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59710578] [2020-10-13 14:13:21,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:13:21,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:21,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:13:21,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:13:21,705 INFO L87 Difference]: Start difference. First operand 990 states and 1395 transitions. Second operand 6 states. [2020-10-13 14:13:22,305 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 225 [2020-10-13 14:13:23,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:23,341 INFO L93 Difference]: Finished difference Result 1701 states and 2418 transitions. [2020-10-13 14:13:23,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:13:23,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:13:23,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:23,344 INFO L225 Difference]: With dead ends: 1701 [2020-10-13 14:13:23,344 INFO L226 Difference]: Without dead ends: 910 [2020-10-13 14:13:23,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:13:23,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2020-10-13 14:13:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 547. [2020-10-13 14:13:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-13 14:13:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 744 transitions. [2020-10-13 14:13:23,461 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 744 transitions. Word has length 66 [2020-10-13 14:13:23,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:23,461 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 744 transitions. [2020-10-13 14:13:23,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:13:23,462 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 744 transitions. [2020-10-13 14:13:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:13:23,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:23,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:13:23,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:13:23,463 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:23,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:23,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1880551844, now seen corresponding path program 1 times [2020-10-13 14:13:23,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:23,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953573866] [2020-10-13 14:13:23,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:23,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:23,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:24,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:24,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:24,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:24,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:25,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:25,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:25,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:25,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:26,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:26,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:27,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:28,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:28,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:13:28,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:13:28,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:13:28,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:13:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:13:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:13:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:28,891 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:13:28,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:28,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:28,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:28,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:28,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:28,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:13:28,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:28,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:28,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953573866] [2020-10-13 14:13:28,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:28,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:13:28,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798181159] [2020-10-13 14:13:28,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:13:28,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:28,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:13:28,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:13:28,924 INFO L87 Difference]: Start difference. First operand 547 states and 744 transitions. Second operand 11 states. [2020-10-13 14:13:29,661 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 236 [2020-10-13 14:13:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:33,044 INFO L93 Difference]: Finished difference Result 3415 states and 4858 transitions. [2020-10-13 14:13:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:13:33,045 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 14:13:33,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:33,051 INFO L225 Difference]: With dead ends: 3415 [2020-10-13 14:13:33,051 INFO L226 Difference]: Without dead ends: 3410 [2020-10-13 14:13:33,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=229, Invalid=961, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 14:13:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2020-10-13 14:13:33,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 547. [2020-10-13 14:13:33,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-13 14:13:33,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 742 transitions. [2020-10-13 14:13:33,210 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 742 transitions. Word has length 67 [2020-10-13 14:13:33,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:33,210 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 742 transitions. [2020-10-13 14:13:33,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:13:33,210 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 742 transitions. [2020-10-13 14:13:33,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:13:33,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:33,211 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] [2020-10-13 14:13:33,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:13:33,212 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:33,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:33,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1495503683, now seen corresponding path program 1 times [2020-10-13 14:13:33,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:33,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681833246] [2020-10-13 14:13:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:33,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:35,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:38,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:38,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:38,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:13:38,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:13:38,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:13:38,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:38,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:13:38,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:13:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:13:38,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:38,641 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:13:38,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:38,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:38,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:38,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:38,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:13:38,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:38,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681833246] [2020-10-13 14:13:38,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:38,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:13:38,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210002121] [2020-10-13 14:13:38,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:13:38,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:38,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:13:38,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:13:38,669 INFO L87 Difference]: Start difference. First operand 547 states and 742 transitions. Second operand 11 states. [2020-10-13 14:13:39,120 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-13 14:13:42,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:42,809 INFO L93 Difference]: Finished difference Result 2885 states and 4088 transitions. [2020-10-13 14:13:42,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:13:42,810 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 14:13:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:42,818 INFO L225 Difference]: With dead ends: 2885 [2020-10-13 14:13:42,818 INFO L226 Difference]: Without dead ends: 2868 [2020-10-13 14:13:42,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 14:13:42,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2020-10-13 14:13:42,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 547. [2020-10-13 14:13:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-13 14:13:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 740 transitions. [2020-10-13 14:13:42,965 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 740 transitions. Word has length 67 [2020-10-13 14:13:42,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:42,965 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 740 transitions. [2020-10-13 14:13:42,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:13:42,965 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 740 transitions. [2020-10-13 14:13:42,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:13:42,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:42,966 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] [2020-10-13 14:13:42,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:13:42,967 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:42,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:42,967 INFO L82 PathProgramCache]: Analyzing trace with hash 635711597, now seen corresponding path program 1 times [2020-10-13 14:13:42,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:42,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121554294] [2020-10-13 14:13:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:43,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:43,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:43,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:43,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:47,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:47,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:47,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:47,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:47,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:48,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:48,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:13:48,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:13:48,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:13:48,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:13:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:13:48,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:13:48,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:48,392 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:13:48,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:48,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:48,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:48,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:48,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:13:48,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:48,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121554294] [2020-10-13 14:13:48,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:48,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:13:48,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152672185] [2020-10-13 14:13:48,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:13:48,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:48,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:13:48,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:13:48,420 INFO L87 Difference]: Start difference. First operand 547 states and 740 transitions. Second operand 10 states. [2020-10-13 14:13:49,120 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 233 [2020-10-13 14:13:51,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:51,194 INFO L93 Difference]: Finished difference Result 1073 states and 1477 transitions. [2020-10-13 14:13:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 14:13:51,194 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-13 14:13:51,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:51,195 INFO L225 Difference]: With dead ends: 1073 [2020-10-13 14:13:51,196 INFO L226 Difference]: Without dead ends: 779 [2020-10-13 14:13:51,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2020-10-13 14:13:51,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-10-13 14:13:51,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 545. [2020-10-13 14:13:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-10-13 14:13:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 736 transitions. [2020-10-13 14:13:51,351 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 736 transitions. Word has length 67 [2020-10-13 14:13:51,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:51,352 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 736 transitions. [2020-10-13 14:13:51,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:13:51,352 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 736 transitions. [2020-10-13 14:13:51,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:13:51,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:51,354 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] [2020-10-13 14:13:51,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:13:51,355 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:51,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:51,355 INFO L82 PathProgramCache]: Analyzing trace with hash -216881066, now seen corresponding path program 1 times [2020-10-13 14:13:51,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:51,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748023083] [2020-10-13 14:13:51,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:51,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:51,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:51,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:52,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:53,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:56,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:56,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:13:56,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:13:56,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:13:56,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:13:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:13:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 14:13:56,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:56,758 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:13:56,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:56,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:56,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:56,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:56,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:56,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:13:56,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:56,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:56,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:56,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:56,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:56,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748023083] [2020-10-13 14:13:56,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:56,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:13:56,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606162779] [2020-10-13 14:13:56,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:13:56,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:56,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:13:56,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:13:56,785 INFO L87 Difference]: Start difference. First operand 545 states and 736 transitions. Second operand 10 states. [2020-10-13 14:13:57,092 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-13 14:13:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:58,665 INFO L93 Difference]: Finished difference Result 1455 states and 2058 transitions. [2020-10-13 14:13:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:13:58,666 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-13 14:13:58,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:58,667 INFO L225 Difference]: With dead ends: 1455 [2020-10-13 14:13:58,667 INFO L226 Difference]: Without dead ends: 1138 [2020-10-13 14:13:58,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:13:58,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2020-10-13 14:13:58,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 518. [2020-10-13 14:13:58,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-13 14:13:58,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 700 transitions. [2020-10-13 14:13:58,770 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 700 transitions. Word has length 67 [2020-10-13 14:13:58,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:58,771 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 700 transitions. [2020-10-13 14:13:58,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:13:58,771 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 700 transitions. [2020-10-13 14:13:58,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:13:58,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:58,772 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] [2020-10-13 14:13:58,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:13:58,772 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:58,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:58,773 INFO L82 PathProgramCache]: Analyzing trace with hash -660837186, now seen corresponding path program 1 times [2020-10-13 14:13:58,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:58,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736180070] [2020-10-13 14:13:58,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:58,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:58,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:58,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:59,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:59,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:59,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:59,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:00,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:00,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:00,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:01,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:01,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:01,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:01,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:01,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:02,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:03,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:03,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:03,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:14:03,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:14:03,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:14:03,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:14:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:14:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:14:03,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:04,222 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:14:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:04,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:04,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:04,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:04,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:04,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:14:04,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:04,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:04,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736180070] [2020-10-13 14:14:04,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:04,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:14:04,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471117602] [2020-10-13 14:14:04,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:14:04,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:04,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:14:04,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:14:04,249 INFO L87 Difference]: Start difference. First operand 518 states and 700 transitions. Second operand 11 states. [2020-10-13 14:14:04,636 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2020-10-13 14:14:09,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:09,188 INFO L93 Difference]: Finished difference Result 4065 states and 5797 transitions. [2020-10-13 14:14:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 14:14:09,188 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 14:14:09,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:09,194 INFO L225 Difference]: With dead ends: 4065 [2020-10-13 14:14:09,194 INFO L226 Difference]: Without dead ends: 3770 [2020-10-13 14:14:09,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 14:14:09,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3770 states. [2020-10-13 14:14:09,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3770 to 518. [2020-10-13 14:14:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-13 14:14:09,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 699 transitions. [2020-10-13 14:14:09,393 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 699 transitions. Word has length 67 [2020-10-13 14:14:09,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:09,394 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 699 transitions. [2020-10-13 14:14:09,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:14:09,394 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 699 transitions. [2020-10-13 14:14:09,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:14:09,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:09,396 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] [2020-10-13 14:14:09,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:14:09,396 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:09,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:09,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1268319326, now seen corresponding path program 1 times [2020-10-13 14:14:09,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:09,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654072808] [2020-10-13 14:14:09,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:09,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:09,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:09,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:09,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:09,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:09,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:10,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:10,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:11,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:14,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:14,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:14:14,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:14:14,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:14:14,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:14:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:14:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:14:14,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:14,827 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:14:14,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:14,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:14,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:14,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:14,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:14,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:14:14,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:14,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:14,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654072808] [2020-10-13 14:14:14,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:14,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:14:14,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916279159] [2020-10-13 14:14:14,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:14:14,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:14,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:14:14,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:14:14,855 INFO L87 Difference]: Start difference. First operand 518 states and 699 transitions. Second operand 10 states. [2020-10-13 14:14:15,248 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-13 14:14:16,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:16,945 INFO L93 Difference]: Finished difference Result 1466 states and 2067 transitions. [2020-10-13 14:14:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 14:14:16,946 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-13 14:14:16,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:16,947 INFO L225 Difference]: With dead ends: 1466 [2020-10-13 14:14:16,947 INFO L226 Difference]: Without dead ends: 1138 [2020-10-13 14:14:16,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:14:16,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2020-10-13 14:14:17,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 518. [2020-10-13 14:14:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-13 14:14:17,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 698 transitions. [2020-10-13 14:14:17,055 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 698 transitions. Word has length 67 [2020-10-13 14:14:17,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:17,055 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 698 transitions. [2020-10-13 14:14:17,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:14:17,055 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 698 transitions. [2020-10-13 14:14:17,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:14:17,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:17,056 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] [2020-10-13 14:14:17,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:14:17,057 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:17,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:17,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1473058826, now seen corresponding path program 1 times [2020-10-13 14:14:17,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:17,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117375522] [2020-10-13 14:14:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:17,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:17,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:17,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:17,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:17,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:17,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:22,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:22,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:14:22,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:14:22,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:14:22,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:14:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:14:22,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:22,426 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:14:22,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:22,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:22,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:22,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:22,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:22,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:14:22,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:22,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:22,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117375522] [2020-10-13 14:14:22,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:22,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:22,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170329988] [2020-10-13 14:14:22,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:22,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:22,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:22,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:22,452 INFO L87 Difference]: Start difference. First operand 518 states and 698 transitions. Second operand 7 states. [2020-10-13 14:14:22,784 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-13 14:14:23,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:23,998 INFO L93 Difference]: Finished difference Result 1026 states and 1406 transitions. [2020-10-13 14:14:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:14:23,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 14:14:24,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:24,001 INFO L225 Difference]: With dead ends: 1026 [2020-10-13 14:14:24,002 INFO L226 Difference]: Without dead ends: 654 [2020-10-13 14:14:24,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:14:24,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-10-13 14:14:24,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 474. [2020-10-13 14:14:24,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-10-13 14:14:24,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 638 transitions. [2020-10-13 14:14:24,118 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 638 transitions. Word has length 68 [2020-10-13 14:14:24,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:24,118 INFO L479 AbstractCegarLoop]: Abstraction has 474 states and 638 transitions. [2020-10-13 14:14:24,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:24,118 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 638 transitions. [2020-10-13 14:14:24,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:14:24,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:24,119 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] [2020-10-13 14:14:24,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:14:24,119 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:24,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:24,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1664493892, now seen corresponding path program 1 times [2020-10-13 14:14:24,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:24,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082005572] [2020-10-13 14:14:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:24,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:24,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:24,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:25,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:25,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:26,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:29,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:29,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:14:29,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:14:29,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:14:29,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:29,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:14:29,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:14:29,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 14:14:29,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:29,552 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:14:29,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:29,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:29,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:29,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:29,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:14:29,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:29,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082005572] [2020-10-13 14:14:29,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:29,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:14:29,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502498495] [2020-10-13 14:14:29,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:14:29,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:29,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:14:29,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:14:29,594 INFO L87 Difference]: Start difference. First operand 474 states and 638 transitions. Second operand 11 states. [2020-10-13 14:14:29,906 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-13 14:14:32,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:32,044 INFO L93 Difference]: Finished difference Result 1944 states and 2745 transitions. [2020-10-13 14:14:32,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:14:32,044 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-10-13 14:14:32,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:32,046 INFO L225 Difference]: With dead ends: 1944 [2020-10-13 14:14:32,046 INFO L226 Difference]: Without dead ends: 1650 [2020-10-13 14:14:32,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:14:32,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2020-10-13 14:14:32,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 470. [2020-10-13 14:14:32,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-10-13 14:14:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 633 transitions. [2020-10-13 14:14:32,153 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 633 transitions. Word has length 69 [2020-10-13 14:14:32,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:32,153 INFO L479 AbstractCegarLoop]: Abstraction has 470 states and 633 transitions. [2020-10-13 14:14:32,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:14:32,153 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 633 transitions. [2020-10-13 14:14:32,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:14:32,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:32,154 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] [2020-10-13 14:14:32,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:14:32,154 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:32,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:32,154 INFO L82 PathProgramCache]: Analyzing trace with hash 714738480, now seen corresponding path program 1 times [2020-10-13 14:14:32,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:32,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166420783] [2020-10-13 14:14:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:32,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:32,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:32,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:32,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:33,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:33,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:37,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:37,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:14:37,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:14:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:14:37,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:14:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:14:37,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:14:37,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:37,624 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:14:37,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:37,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:37,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:37,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:37,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:14:37,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:37,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166420783] [2020-10-13 14:14:37,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:37,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:14:37,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257467740] [2020-10-13 14:14:37,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:14:37,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:37,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:14:37,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:14:37,649 INFO L87 Difference]: Start difference. First operand 470 states and 633 transitions. Second operand 10 states. [2020-10-13 14:14:37,960 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-13 14:14:39,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:39,196 INFO L93 Difference]: Finished difference Result 970 states and 1347 transitions. [2020-10-13 14:14:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:39,197 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-10-13 14:14:39,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:39,197 INFO L225 Difference]: With dead ends: 970 [2020-10-13 14:14:39,198 INFO L226 Difference]: Without dead ends: 676 [2020-10-13 14:14:39,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:14:39,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-10-13 14:14:39,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 466. [2020-10-13 14:14:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-13 14:14:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 628 transitions. [2020-10-13 14:14:39,302 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 628 transitions. Word has length 69 [2020-10-13 14:14:39,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:39,302 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 628 transitions. [2020-10-13 14:14:39,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:14:39,302 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 628 transitions. [2020-10-13 14:14:39,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:14:39,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:39,303 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] [2020-10-13 14:14:39,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:14:39,303 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:39,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:39,303 INFO L82 PathProgramCache]: Analyzing trace with hash -994428397, now seen corresponding path program 1 times [2020-10-13 14:14:39,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:39,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664145083] [2020-10-13 14:14:39,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:39,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:39,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:39,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:40,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:40,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:40,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:40,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:41,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:41,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:44,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:44,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:14:44,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:14:44,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:14:44,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:14:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:14:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:14:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:44,727 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:14:44,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:44,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:44,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:44,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:44,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:44,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:14:44,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:44,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:44,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664145083] [2020-10-13 14:14:44,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:44,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:14:44,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516929212] [2020-10-13 14:14:44,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:14:44,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:44,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:14:44,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:14:44,753 INFO L87 Difference]: Start difference. First operand 466 states and 628 transitions. Second operand 11 states. [2020-10-13 14:14:45,175 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-13 14:14:47,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:47,343 INFO L93 Difference]: Finished difference Result 1771 states and 2485 transitions. [2020-10-13 14:14:47,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 14:14:47,345 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 14:14:47,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:47,347 INFO L225 Difference]: With dead ends: 1771 [2020-10-13 14:14:47,347 INFO L226 Difference]: Without dead ends: 1764 [2020-10-13 14:14:47,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2020-10-13 14:14:47,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2020-10-13 14:14:47,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 466. [2020-10-13 14:14:47,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-13 14:14:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 627 transitions. [2020-10-13 14:14:47,458 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 627 transitions. Word has length 70 [2020-10-13 14:14:47,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:47,458 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 627 transitions. [2020-10-13 14:14:47,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:14:47,458 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 627 transitions. [2020-10-13 14:14:47,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:14:47,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:47,459 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] [2020-10-13 14:14:47,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:14:47,460 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:47,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:47,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1808706380, now seen corresponding path program 1 times [2020-10-13 14:14:47,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:47,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309227143] [2020-10-13 14:14:47,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:47,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:48,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:52,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:52,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:14:52,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:14:52,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:14:52,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:14:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:14:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:14:52,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:52,920 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:14:52,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:52,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:52,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:52,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:52,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:52,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:14:52,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:52,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:52,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:52,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:52,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:52,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:52,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309227143] [2020-10-13 14:14:52,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:52,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:14:52,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742739341] [2020-10-13 14:14:52,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:14:52,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:52,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:14:52,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:14:52,961 INFO L87 Difference]: Start difference. First operand 466 states and 627 transitions. Second operand 11 states. [2020-10-13 14:14:53,316 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-13 14:14:55,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:55,476 INFO L93 Difference]: Finished difference Result 1282 states and 1800 transitions. [2020-10-13 14:14:55,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 14:14:55,477 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 14:14:55,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:55,478 INFO L225 Difference]: With dead ends: 1282 [2020-10-13 14:14:55,478 INFO L226 Difference]: Without dead ends: 949 [2020-10-13 14:14:55,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-10-13 14:14:55,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-10-13 14:14:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 470. [2020-10-13 14:14:55,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-10-13 14:14:55,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 631 transitions. [2020-10-13 14:14:55,591 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 631 transitions. Word has length 70 [2020-10-13 14:14:55,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:55,591 INFO L479 AbstractCegarLoop]: Abstraction has 470 states and 631 transitions. [2020-10-13 14:14:55,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:14:55,591 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 631 transitions. [2020-10-13 14:14:55,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:14:55,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:55,592 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] [2020-10-13 14:14:55,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:14:55,592 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:55,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:55,593 INFO L82 PathProgramCache]: Analyzing trace with hash -372074893, now seen corresponding path program 1 times [2020-10-13 14:14:55,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:55,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282163809] [2020-10-13 14:14:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:55,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:55,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:55,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:55,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:55,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:56,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:56,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:59,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:00,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:00,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:15:00,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:15:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:15:00,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:15:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:15:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 14:15:00,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:00,945 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:15:00,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:00,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:00,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:00,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:00,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:00,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:15:00,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:00,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:00,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:00,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:00,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:00,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282163809] [2020-10-13 14:15:00,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:00,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:15:00,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585728443] [2020-10-13 14:15:00,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:15:00,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:00,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:15:00,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:15:00,975 INFO L87 Difference]: Start difference. First operand 470 states and 631 transitions. Second operand 8 states. [2020-10-13 14:15:01,289 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-13 14:15:02,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:02,271 INFO L93 Difference]: Finished difference Result 930 states and 1295 transitions. [2020-10-13 14:15:02,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:15:02,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-13 14:15:02,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:02,272 INFO L225 Difference]: With dead ends: 930 [2020-10-13 14:15:02,272 INFO L226 Difference]: Without dead ends: 601 [2020-10-13 14:15:02,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:15:02,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-10-13 14:15:02,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 431. [2020-10-13 14:15:02,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-13 14:15:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 583 transitions. [2020-10-13 14:15:02,378 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 583 transitions. Word has length 70 [2020-10-13 14:15:02,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:02,379 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 583 transitions. [2020-10-13 14:15:02,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:15:02,379 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 583 transitions. [2020-10-13 14:15:02,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:15:02,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:02,379 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] [2020-10-13 14:15:02,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 14:15:02,380 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:02,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:02,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1152479625, now seen corresponding path program 1 times [2020-10-13 14:15:02,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:02,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977273252] [2020-10-13 14:15:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:02,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:02,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:02,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:02,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:02,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:03,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:05,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:05,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 14:15:05,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:15:05,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3327 [2020-10-13 14:15:05,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:05,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:15:05,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:15:05,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:15:05,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:06,119 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:15:06,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:06,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:06,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:06,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:06,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:06,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:15:06,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:06,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977273252] [2020-10-13 14:15:06,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:06,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:15:06,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260454137] [2020-10-13 14:15:06,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:15:06,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:06,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:15:06,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:06,150 INFO L87 Difference]: Start difference. First operand 431 states and 583 transitions. Second operand 11 states. [2020-10-13 14:15:06,477 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-13 14:15:07,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:07,968 INFO L93 Difference]: Finished difference Result 1089 states and 1530 transitions. [2020-10-13 14:15:07,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:15:07,969 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-13 14:15:07,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:07,969 INFO L225 Difference]: With dead ends: 1089 [2020-10-13 14:15:07,970 INFO L226 Difference]: Without dead ends: 766 [2020-10-13 14:15:07,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:15:07,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2020-10-13 14:15:08,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 433. [2020-10-13 14:15:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-13 14:15:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 586 transitions. [2020-10-13 14:15:08,079 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 586 transitions. Word has length 71 [2020-10-13 14:15:08,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:08,080 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 586 transitions. [2020-10-13 14:15:08,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:15:08,080 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 586 transitions. [2020-10-13 14:15:08,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:15:08,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:08,080 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] [2020-10-13 14:15:08,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 14:15:08,081 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:08,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:08,081 INFO L82 PathProgramCache]: Analyzing trace with hash 2073984290, now seen corresponding path program 1 times [2020-10-13 14:15:08,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:08,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649060181] [2020-10-13 14:15:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:08,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:08,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:08,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:08,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:08,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:08,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:10,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:10,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:11,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:13,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:13,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 14:15:13,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:15:13,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:15:13,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:15:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:15:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 14:15:13,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:13,445 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:15:13,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:13,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:13,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:13,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:13,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:13,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:15:13,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:13,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:13,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:13,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:13,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:13,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649060181] [2020-10-13 14:15:13,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:13,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:15:13,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470703971] [2020-10-13 14:15:13,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:15:13,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:13,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:15:13,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:15:13,472 INFO L87 Difference]: Start difference. First operand 433 states and 586 transitions. Second operand 8 states. [2020-10-13 14:15:13,833 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-13 14:15:14,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:14,874 INFO L93 Difference]: Finished difference Result 766 states and 1063 transitions. [2020-10-13 14:15:14,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:15:14,875 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-13 14:15:14,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:14,876 INFO L225 Difference]: With dead ends: 766 [2020-10-13 14:15:14,876 INFO L226 Difference]: Without dead ends: 433 [2020-10-13 14:15:14,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-13 14:15:14,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-13 14:15:14,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2020-10-13 14:15:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-13 14:15:14,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 585 transitions. [2020-10-13 14:15:14,988 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 585 transitions. Word has length 71 [2020-10-13 14:15:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:14,989 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 585 transitions. [2020-10-13 14:15:14,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:15:14,989 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 585 transitions. [2020-10-13 14:15:14,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 14:15:14,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:14,990 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] [2020-10-13 14:15:14,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 14:15:14,990 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:14,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:14,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1227602769, now seen corresponding path program 1 times [2020-10-13 14:15:14,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:14,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093755153] [2020-10-13 14:15:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:15,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:15,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:15,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:15,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:15,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:16,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:16,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 14:15:16,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:15:16,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1651 [2020-10-13 14:15:16,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:16,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:15:16,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 14:15:16,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:15:16,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:17,124 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:15:17,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:17,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:17,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:17,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:17,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:15:17,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:17,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093755153] [2020-10-13 14:15:17,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:17,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:15:17,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208675171] [2020-10-13 14:15:17,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:15:17,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:17,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:15:17,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:15:17,153 INFO L87 Difference]: Start difference. First operand 433 states and 585 transitions. Second operand 12 states. [2020-10-13 14:15:17,542 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-13 14:15:21,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:21,102 INFO L93 Difference]: Finished difference Result 1903 states and 2724 transitions. [2020-10-13 14:15:21,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:15:21,103 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-10-13 14:15:21,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:21,104 INFO L225 Difference]: With dead ends: 1903 [2020-10-13 14:15:21,104 INFO L226 Difference]: Without dead ends: 1588 [2020-10-13 14:15:21,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2020-10-13 14:15:21,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2020-10-13 14:15:21,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 437. [2020-10-13 14:15:21,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-13 14:15:21,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 589 transitions. [2020-10-13 14:15:21,223 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 589 transitions. Word has length 72 [2020-10-13 14:15:21,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:21,223 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 589 transitions. [2020-10-13 14:15:21,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:15:21,223 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 589 transitions. [2020-10-13 14:15:21,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 14:15:21,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:21,224 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] [2020-10-13 14:15:21,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 14:15:21,224 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:21,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:21,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1518799007, now seen corresponding path program 1 times [2020-10-13 14:15:21,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:21,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814231857] [2020-10-13 14:15:21,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:21,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:21,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:21,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:22,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:22,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 14:15:22,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:15:22,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1302 [2020-10-13 14:15:22,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:15:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:15:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 14:15:22,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:22,968 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:15:22,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:22,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:22,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:22,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:15:22,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:22,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:22,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:23,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814231857] [2020-10-13 14:15:23,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:23,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:15:23,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773278224] [2020-10-13 14:15:23,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:15:23,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:23,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:15:23,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:15:23,002 INFO L87 Difference]: Start difference. First operand 437 states and 589 transitions. Second operand 12 states. [2020-10-13 14:15:23,343 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-13 14:15:24,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:24,932 INFO L93 Difference]: Finished difference Result 914 states and 1273 transitions. [2020-10-13 14:15:24,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 14:15:24,933 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-10-13 14:15:24,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:24,934 INFO L225 Difference]: With dead ends: 914 [2020-10-13 14:15:24,934 INFO L226 Difference]: Without dead ends: 910 [2020-10-13 14:15:24,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2020-10-13 14:15:24,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2020-10-13 14:15:25,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 443. [2020-10-13 14:15:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-10-13 14:15:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 597 transitions. [2020-10-13 14:15:25,055 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 597 transitions. Word has length 72 [2020-10-13 14:15:25,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:25,055 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 597 transitions. [2020-10-13 14:15:25,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:15:25,055 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 597 transitions. [2020-10-13 14:15:25,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 14:15:25,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:25,056 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] [2020-10-13 14:15:25,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 14:15:25,057 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:25,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:25,057 INFO L82 PathProgramCache]: Analyzing trace with hash -163527607, now seen corresponding path program 1 times [2020-10-13 14:15:25,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:25,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078554133] [2020-10-13 14:15:25,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:25,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:25,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:25,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:25,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:26,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:26,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:26,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:27,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:27,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:28,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:28,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:28,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:29,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:30,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:30,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 14:15:30,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:15:30,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:15:30,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:15:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:15:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:15:30,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:30,474 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:15:30,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:30,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:30,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:30,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:30,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:30,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:15:30,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:30,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:30,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:30,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:30,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:30,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:30,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078554133] [2020-10-13 14:15:30,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:30,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:15:30,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060615424] [2020-10-13 14:15:30,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:15:30,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:30,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:15:30,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:30,506 INFO L87 Difference]: Start difference. First operand 443 states and 597 transitions. Second operand 11 states. [2020-10-13 14:15:30,829 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-13 14:15:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:32,741 INFO L93 Difference]: Finished difference Result 1885 states and 2672 transitions. [2020-10-13 14:15:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:15:32,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-10-13 14:15:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:32,743 INFO L225 Difference]: With dead ends: 1885 [2020-10-13 14:15:32,743 INFO L226 Difference]: Without dead ends: 1594 [2020-10-13 14:15:32,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:15:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2020-10-13 14:15:32,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 442. [2020-10-13 14:15:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-13 14:15:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 595 transitions. [2020-10-13 14:15:32,868 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 595 transitions. Word has length 72 [2020-10-13 14:15:32,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:32,869 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 595 transitions. [2020-10-13 14:15:32,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:15:32,869 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 595 transitions. [2020-10-13 14:15:32,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 14:15:32,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:32,869 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] [2020-10-13 14:15:32,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 14:15:32,870 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:32,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:32,870 INFO L82 PathProgramCache]: Analyzing trace with hash -607975574, now seen corresponding path program 1 times [2020-10-13 14:15:32,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:32,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668355479] [2020-10-13 14:15:32,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:32,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:33,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:33,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:34,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:34,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 14:15:34,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:15:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1697 [2020-10-13 14:15:34,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:15:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:15:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:15:34,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:35,052 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:15:35,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:35,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:35,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:35,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:35,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:35,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:15:35,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:35,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:35,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668355479] [2020-10-13 14:15:35,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:35,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:15:35,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345263024] [2020-10-13 14:15:35,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:15:35,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:35,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:15:35,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:35,082 INFO L87 Difference]: Start difference. First operand 442 states and 595 transitions. Second operand 11 states. [2020-10-13 14:15:35,421 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 219