/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:42:14,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:42:14,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:42:14,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:42:14,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:42:14,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:42:14,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:42:14,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:42:14,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:42:14,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:42:14,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:42:14,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:42:14,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:42:14,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:42:14,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:42:14,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:42:14,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:42:14,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:42:14,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:42:14,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:42:14,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:42:14,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:42:14,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:42:14,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:42:14,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:42:14,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:42:14,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:42:14,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:42:14,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:42:14,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:42:14,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:42:14,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:42:14,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:42:14,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:42:14,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:42:14,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:42:14,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:42:14,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:42:14,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:42:14,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:42:14,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:42:14,138 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 [2020-10-15 03:42:14,185 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:42:14,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:42:14,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:42:14,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:42:14,187 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:42:14,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:42:14,187 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:42:14,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:42:14,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:42:14,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:42:14,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:42:14,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:42:14,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:42:14,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:42:14,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:42:14,189 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:42:14,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:42:14,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:42:14,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:42:14,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:42:14,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:42:14,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:42:14,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:42:14,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:42:14,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:42:14,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:42:14,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:42:14,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:42:14,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:42:14,193 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:42:14,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:42:14,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:42:14,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:42:14,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:42:14,572 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:42:14,573 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 03:42:14,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38258accd/0022852a7db245dbac6084b0338e4293/FLAGf66efe587 [2020-10-15 03:42:15,229 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:42:15,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 03:42:15,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38258accd/0022852a7db245dbac6084b0338e4293/FLAGf66efe587 [2020-10-15 03:42:15,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38258accd/0022852a7db245dbac6084b0338e4293 [2020-10-15 03:42:15,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:42:15,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:42:15,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:42:15,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:42:15,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:42:15,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:42:15" (1/1) ... [2020-10-15 03:42:15,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363f8acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:15, skipping insertion in model container [2020-10-15 03:42:15,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:42:15" (1/1) ... [2020-10-15 03:42:15,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:42:15,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:42:16,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:42:16,328 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:42:16,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:42:16,581 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:42:16,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:16 WrapperNode [2020-10-15 03:42:16,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:42:16,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:42:16,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:42:16,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:42:16,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:16" (1/1) ... [2020-10-15 03:42:16,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:16" (1/1) ... [2020-10-15 03:42:16,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:16" (1/1) ... [2020-10-15 03:42:16,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:16" (1/1) ... [2020-10-15 03:42:16,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:16" (1/1) ... [2020-10-15 03:42:16,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:16" (1/1) ... [2020-10-15 03:42:16,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:16" (1/1) ... [2020-10-15 03:42:16,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:42:16,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:42:16,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:42:16,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:42:16,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:16" (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 [2020-10-15 03:42:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:42:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:42:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:42:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:42:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:42:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:42:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:42:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:42:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:42:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:42:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:42:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:42:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:42:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:42:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:42:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:42:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:42:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:42:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:42:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:42:18,788 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:42:18,789 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:42:18,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:42:18 BoogieIcfgContainer [2020-10-15 03:42:18,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:42:18,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:42:18,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:42:18,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:42:18,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:42:15" (1/3) ... [2020-10-15 03:42:18,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa5cb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:42:18, skipping insertion in model container [2020-10-15 03:42:18,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:16" (2/3) ... [2020-10-15 03:42:18,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa5cb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:42:18, skipping insertion in model container [2020-10-15 03:42:18,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:42:18" (3/3) ... [2020-10-15 03:42:18,805 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 03:42:18,815 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:42:18,823 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-15 03:42:18,837 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 03:42:18,863 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:42:18,864 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:42:18,864 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:42:18,864 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:42:18,864 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:42:18,864 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:42:18,864 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:42:18,864 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:42:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states. [2020-10-15 03:42:18,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 03:42:18,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:18,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:42:18,916 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:18,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:18,922 INFO L82 PathProgramCache]: Analyzing trace with hash -327179082, now seen corresponding path program 1 times [2020-10-15 03:42:18,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:18,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463469144] [2020-10-15 03:42:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:19,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:21,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:21,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:21,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:24,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:24,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 03:42:24,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:42:24,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:42:24,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:24,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:42:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:42:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:42:24,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:42:25,198 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:42:25,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:25,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:25,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:25,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:25,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:25,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:42:25,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:25,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:42:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:42:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:42:25,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463469144] [2020-10-15 03:42:25,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:25,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:42:25,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888998596] [2020-10-15 03:42:25,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:42:25,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:25,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:42:25,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:42:25,292 INFO L87 Difference]: Start difference. First operand 462 states. Second operand 8 states. [2020-10-15 03:42:27,043 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 291 DAG size of output: 287 [2020-10-15 03:42:32,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:32,555 INFO L93 Difference]: Finished difference Result 1490 states and 2442 transitions. [2020-10-15 03:42:32,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 03:42:32,556 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-15 03:42:32,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:32,584 INFO L225 Difference]: With dead ends: 1490 [2020-10-15 03:42:32,584 INFO L226 Difference]: Without dead ends: 1338 [2020-10-15 03:42:32,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2020-10-15 03:42:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2020-10-15 03:42:32,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 469. [2020-10-15 03:42:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-10-15 03:42:32,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 605 transitions. [2020-10-15 03:42:32,696 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 605 transitions. Word has length 55 [2020-10-15 03:42:32,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:32,698 INFO L479 AbstractCegarLoop]: Abstraction has 469 states and 605 transitions. [2020-10-15 03:42:32,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:42:32,698 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 605 transitions. [2020-10-15 03:42:32,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 03:42:32,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:32,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:42:32,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:42:32,706 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:32,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:32,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1869485033, now seen corresponding path program 1 times [2020-10-15 03:42:32,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:32,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671633057] [2020-10-15 03:42:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:32,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:32,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:32,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:33,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:33,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:35,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:35,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:36,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:36,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:37,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:37,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 03:42:37,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:42:37,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:42:37,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:37,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:37,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:42:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:42:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:42:37,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-15 03:42:38,472 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:42:38,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:38,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:38,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:38,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:38,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:38,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 03:42:38,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:38,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:42:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:42:38,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:42:38,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671633057] [2020-10-15 03:42:38,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:38,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:42:38,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784030456] [2020-10-15 03:42:38,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:42:38,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:38,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:42:38,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:42:38,553 INFO L87 Difference]: Start difference. First operand 469 states and 605 transitions. Second operand 8 states. [2020-10-15 03:42:39,282 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-15 03:42:42,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:42,410 INFO L93 Difference]: Finished difference Result 888 states and 1210 transitions. [2020-10-15 03:42:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:42:42,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-15 03:42:42,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:42,416 INFO L225 Difference]: With dead ends: 888 [2020-10-15 03:42:42,416 INFO L226 Difference]: Without dead ends: 725 [2020-10-15 03:42:42,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:42:42,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-10-15 03:42:42,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 477. [2020-10-15 03:42:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-15 03:42:42,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 611 transitions. [2020-10-15 03:42:42,478 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 611 transitions. Word has length 55 [2020-10-15 03:42:42,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:42,479 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 611 transitions. [2020-10-15 03:42:42,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:42:42,479 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 611 transitions. [2020-10-15 03:42:42,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 03:42:42,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:42,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:42:42,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:42:42,485 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:42,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:42,486 INFO L82 PathProgramCache]: Analyzing trace with hash -301381471, now seen corresponding path program 1 times [2020-10-15 03:42:42,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:42,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953043378] [2020-10-15 03:42:42,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:42,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:42,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:42,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:43,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:47,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:47,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 03:42:47,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:42:47,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 03:42:47,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:47,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:42:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:42:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:42:47,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:48,266 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:42:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:48,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:48,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:48,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:42:48,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:48,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:42:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:42:48,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:42:48,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953043378] [2020-10-15 03:42:48,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:48,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:42:48,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783319955] [2020-10-15 03:42:48,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:42:48,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:48,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:42:48,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:42:48,331 INFO L87 Difference]: Start difference. First operand 477 states and 611 transitions. Second operand 8 states. [2020-10-15 03:42:49,056 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-15 03:42:52,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:52,975 INFO L93 Difference]: Finished difference Result 1057 states and 1447 transitions. [2020-10-15 03:42:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:42:52,976 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-15 03:42:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:52,981 INFO L225 Difference]: With dead ends: 1057 [2020-10-15 03:42:52,984 INFO L226 Difference]: Without dead ends: 940 [2020-10-15 03:42:52,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:42:52,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-10-15 03:42:53,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 491. [2020-10-15 03:42:53,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-15 03:42:53,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 631 transitions. [2020-10-15 03:42:53,028 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 631 transitions. Word has length 56 [2020-10-15 03:42:53,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:53,033 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 631 transitions. [2020-10-15 03:42:53,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:42:53,033 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 631 transitions. [2020-10-15 03:42:53,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 03:42:53,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:53,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:42:53,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:42:53,038 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:53,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:53,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1307963583, now seen corresponding path program 1 times [2020-10-15 03:42:53,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:53,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164381263] [2020-10-15 03:42:53,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:53,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:53,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:53,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:53,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:53,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:53,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:54,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:54,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:55,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:55,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:56,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:56,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:57,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:58,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:58,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 03:42:58,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:42:58,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:42:58,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:58,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:42:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:42:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:42:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:58,707 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:42:58,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:58,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:58,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:58,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:58,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:58,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 03:42:58,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:58,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:58,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:42:58,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:58,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:42:58,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:42:58,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164381263] [2020-10-15 03:42:58,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:58,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:42:58,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411509251] [2020-10-15 03:42:58,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:42:58,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:58,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:42:58,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:42:58,778 INFO L87 Difference]: Start difference. First operand 491 states and 631 transitions. Second operand 8 states. [2020-10-15 03:42:59,342 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-15 03:43:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:03,361 INFO L93 Difference]: Finished difference Result 1206 states and 1644 transitions. [2020-10-15 03:43:03,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:43:03,361 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-15 03:43:03,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:03,367 INFO L225 Difference]: With dead ends: 1206 [2020-10-15 03:43:03,367 INFO L226 Difference]: Without dead ends: 1110 [2020-10-15 03:43:03,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2020-10-15 03:43:03,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2020-10-15 03:43:03,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 632. [2020-10-15 03:43:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 632 states. [2020-10-15 03:43:03,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 831 transitions. [2020-10-15 03:43:03,419 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 831 transitions. Word has length 57 [2020-10-15 03:43:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:03,420 INFO L479 AbstractCegarLoop]: Abstraction has 632 states and 831 transitions. [2020-10-15 03:43:03,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 831 transitions. [2020-10-15 03:43:03,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 03:43:03,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:03,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:43:03,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:43:03,423 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:03,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:03,423 INFO L82 PathProgramCache]: Analyzing trace with hash 934696832, now seen corresponding path program 1 times [2020-10-15 03:43:03,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:03,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308091217] [2020-10-15 03:43:03,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:03,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:03,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:04,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:04,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:04,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:05,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:05,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:05,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:07,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:08,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:08,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 03:43:08,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:43:08,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:43:08,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:08,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:08,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:43:08,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:43:08,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:09,112 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:43:09,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:09,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:09,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:09,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:09,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:09,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:43:09,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:09,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:09,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:09,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:09,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:43:09,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:09,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308091217] [2020-10-15 03:43:09,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:09,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:43:09,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947750241] [2020-10-15 03:43:09,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:09,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:09,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:09,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:09,162 INFO L87 Difference]: Start difference. First operand 632 states and 831 transitions. Second operand 8 states. [2020-10-15 03:43:09,692 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-15 03:43:13,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:13,639 INFO L93 Difference]: Finished difference Result 1669 states and 2321 transitions. [2020-10-15 03:43:13,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:43:13,639 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-15 03:43:13,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:13,647 INFO L225 Difference]: With dead ends: 1669 [2020-10-15 03:43:13,647 INFO L226 Difference]: Without dead ends: 1432 [2020-10-15 03:43:13,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:43:13,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-15 03:43:13,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 636. [2020-10-15 03:43:13,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-10-15 03:43:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 835 transitions. [2020-10-15 03:43:13,709 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 835 transitions. Word has length 57 [2020-10-15 03:43:13,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:13,709 INFO L479 AbstractCegarLoop]: Abstraction has 636 states and 835 transitions. [2020-10-15 03:43:13,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:13,710 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 835 transitions. [2020-10-15 03:43:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 03:43:13,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:13,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:43:13,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:43:13,712 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:13,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:13,713 INFO L82 PathProgramCache]: Analyzing trace with hash 704178521, now seen corresponding path program 1 times [2020-10-15 03:43:13,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:13,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714140892] [2020-10-15 03:43:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:13,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:13,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:13,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:13,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:14,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:14,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:14,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:14,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:16,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:16,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:16,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:16,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:16,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:18,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:18,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:18,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:18,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 03:43:18,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:43:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:43:18,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:18,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:43:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:43:18,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:19,339 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:43:19,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:19,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:19,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:19,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:19,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:43:19,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:19,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:43:19,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:19,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714140892] [2020-10-15 03:43:19,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:19,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:43:19,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300965370] [2020-10-15 03:43:19,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:19,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:19,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:19,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:19,396 INFO L87 Difference]: Start difference. First operand 636 states and 835 transitions. Second operand 8 states. [2020-10-15 03:43:19,927 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-15 03:43:23,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:23,533 INFO L93 Difference]: Finished difference Result 1677 states and 2329 transitions. [2020-10-15 03:43:23,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:43:23,534 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-15 03:43:23,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:23,541 INFO L225 Difference]: With dead ends: 1677 [2020-10-15 03:43:23,541 INFO L226 Difference]: Without dead ends: 1440 [2020-10-15 03:43:23,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:43:23,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2020-10-15 03:43:23,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 640. [2020-10-15 03:43:23,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2020-10-15 03:43:23,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 839 transitions. [2020-10-15 03:43:23,603 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 839 transitions. Word has length 57 [2020-10-15 03:43:23,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:23,603 INFO L479 AbstractCegarLoop]: Abstraction has 640 states and 839 transitions. [2020-10-15 03:43:23,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:23,603 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 839 transitions. [2020-10-15 03:43:23,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 03:43:23,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:23,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:43:23,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:43:23,606 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:23,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:23,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1013274076, now seen corresponding path program 1 times [2020-10-15 03:43:23,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:23,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722417470] [2020-10-15 03:43:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:23,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:23,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:24,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:24,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:24,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:24,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:24,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:24,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:26,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:26,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:26,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:27,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:28,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:28,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:28,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:28,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 03:43:28,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:43:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:43:28,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:28,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:43:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:43:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:43:28,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:29,226 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:43:29,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:29,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:29,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:29,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:29,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:43:29,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:29,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:29,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:29,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:29,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:29,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722417470] [2020-10-15 03:43:29,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:29,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:43:29,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516097426] [2020-10-15 03:43:29,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:43:29,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:29,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:43:29,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:43:29,258 INFO L87 Difference]: Start difference. First operand 640 states and 839 transitions. Second operand 9 states. [2020-10-15 03:43:29,813 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-15 03:43:32,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:32,658 INFO L93 Difference]: Finished difference Result 1299 states and 1781 transitions. [2020-10-15 03:43:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:43:32,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-15 03:43:32,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:32,665 INFO L225 Difference]: With dead ends: 1299 [2020-10-15 03:43:32,665 INFO L226 Difference]: Without dead ends: 923 [2020-10-15 03:43:32,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:43:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2020-10-15 03:43:32,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 651. [2020-10-15 03:43:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-10-15 03:43:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 869 transitions. [2020-10-15 03:43:32,731 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 869 transitions. Word has length 58 [2020-10-15 03:43:32,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:32,731 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 869 transitions. [2020-10-15 03:43:32,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:43:32,731 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 869 transitions. [2020-10-15 03:43:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 03:43:32,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:32,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:43:32,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:43:32,734 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:32,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:32,734 INFO L82 PathProgramCache]: Analyzing trace with hash 966445092, now seen corresponding path program 1 times [2020-10-15 03:43:32,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:32,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103911295] [2020-10-15 03:43:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:32,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:32,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:32,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:32,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:33,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:33,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:33,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:33,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:37,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 03:43:37,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:43:37,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:43:37,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:37,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:43:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:43:37,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:38,376 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:43:38,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:38,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:38,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:38,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:38,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:38,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:43:38,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:38,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:38,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:38,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:38,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:43:38,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:38,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103911295] [2020-10-15 03:43:38,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:38,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:43:38,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513799330] [2020-10-15 03:43:38,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:38,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:38,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:38,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:38,444 INFO L87 Difference]: Start difference. First operand 651 states and 869 transitions. Second operand 8 states. [2020-10-15 03:43:38,958 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-15 03:43:41,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:41,868 INFO L93 Difference]: Finished difference Result 1726 states and 2431 transitions. [2020-10-15 03:43:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:43:41,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-15 03:43:41,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:41,874 INFO L225 Difference]: With dead ends: 1726 [2020-10-15 03:43:41,874 INFO L226 Difference]: Without dead ends: 1461 [2020-10-15 03:43:41,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:43:41,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2020-10-15 03:43:41,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 578. [2020-10-15 03:43:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-15 03:43:41,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 763 transitions. [2020-10-15 03:43:41,938 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 763 transitions. Word has length 58 [2020-10-15 03:43:41,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:41,939 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 763 transitions. [2020-10-15 03:43:41,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:41,939 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 763 transitions. [2020-10-15 03:43:41,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 03:43:41,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:41,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:43:41,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:43:41,941 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:41,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:41,941 INFO L82 PathProgramCache]: Analyzing trace with hash -87615492, now seen corresponding path program 1 times [2020-10-15 03:43:41,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:41,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371239914] [2020-10-15 03:43:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:41,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:42,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:42,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:42,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:42,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:42,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:42,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:42,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:42,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:42,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:43,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:43,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:43,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:44,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:46,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:46,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 03:43:46,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:43:46,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:43:46,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:46,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:43:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:43:46,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:47,505 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:43:47,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:47,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:47,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:47,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:47,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:47,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:43:47,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:47,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:47,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:47,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:47,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:43:47,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:47,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371239914] [2020-10-15 03:43:47,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:47,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:43:47,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486289503] [2020-10-15 03:43:47,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:47,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:47,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:47,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:47,550 INFO L87 Difference]: Start difference. First operand 578 states and 763 transitions. Second operand 8 states. [2020-10-15 03:43:48,067 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-15 03:43:50,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:50,887 INFO L93 Difference]: Finished difference Result 1464 states and 2037 transitions. [2020-10-15 03:43:50,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:43:50,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-15 03:43:50,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:50,891 INFO L225 Difference]: With dead ends: 1464 [2020-10-15 03:43:50,892 INFO L226 Difference]: Without dead ends: 1248 [2020-10-15 03:43:50,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:43:50,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2020-10-15 03:43:50,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 582. [2020-10-15 03:43:50,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-10-15 03:43:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 767 transitions. [2020-10-15 03:43:50,957 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 767 transitions. Word has length 58 [2020-10-15 03:43:50,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:50,957 INFO L479 AbstractCegarLoop]: Abstraction has 582 states and 767 transitions. [2020-10-15 03:43:50,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 767 transitions. [2020-10-15 03:43:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 03:43:50,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:50,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:43:50,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:43:50,960 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:50,960 INFO L82 PathProgramCache]: Analyzing trace with hash -297451765, now seen corresponding path program 1 times [2020-10-15 03:43:50,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:50,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401359681] [2020-10-15 03:43:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:51,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:52,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:53,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:55,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:56,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:56,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 03:43:56,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:43:56,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 03:43:56,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:56,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:43:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:43:56,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:56,565 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:43:56,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:56,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:56,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:56,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:56,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:43:56,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:56,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:43:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:56,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401359681] [2020-10-15 03:43:56,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:56,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:43:56,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92085584] [2020-10-15 03:43:56,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:56,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:56,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:56,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:56,607 INFO L87 Difference]: Start difference. First operand 582 states and 767 transitions. Second operand 8 states. [2020-10-15 03:43:57,167 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-15 03:44:00,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:00,419 INFO L93 Difference]: Finished difference Result 1512 states and 2097 transitions. [2020-10-15 03:44:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:44:00,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-15 03:44:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:00,426 INFO L225 Difference]: With dead ends: 1512 [2020-10-15 03:44:00,426 INFO L226 Difference]: Without dead ends: 1332 [2020-10-15 03:44:00,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:44:00,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2020-10-15 03:44:00,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 586. [2020-10-15 03:44:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-10-15 03:44:00,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 771 transitions. [2020-10-15 03:44:00,495 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 771 transitions. Word has length 58 [2020-10-15 03:44:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:00,496 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 771 transitions. [2020-10-15 03:44:00,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:44:00,496 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 771 transitions. [2020-10-15 03:44:00,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 03:44:00,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:00,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:44:00,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:44:00,498 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:00,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:00,498 INFO L82 PathProgramCache]: Analyzing trace with hash -576147354, now seen corresponding path program 1 times [2020-10-15 03:44:00,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:00,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419819649] [2020-10-15 03:44:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:00,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:00,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:00,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:01,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:01,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:01,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:01,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:01,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:01,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:02,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:05,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:05,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 03:44:05,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:44:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:44:05,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:05,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:44:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:44:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:06,152 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:44:06,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:06,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:06,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:06,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:06,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:06,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:44:06,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:06,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:06,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:06,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419819649] [2020-10-15 03:44:06,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:06,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:44:06,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723871255] [2020-10-15 03:44:06,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:44:06,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:06,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:44:06,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:44:06,195 INFO L87 Difference]: Start difference. First operand 586 states and 771 transitions. Second operand 8 states. [2020-10-15 03:44:06,721 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-15 03:44:10,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:10,054 INFO L93 Difference]: Finished difference Result 1622 states and 2245 transitions. [2020-10-15 03:44:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:44:10,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-15 03:44:10,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:10,060 INFO L225 Difference]: With dead ends: 1622 [2020-10-15 03:44:10,061 INFO L226 Difference]: Without dead ends: 1381 [2020-10-15 03:44:10,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:44:10,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2020-10-15 03:44:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 590. [2020-10-15 03:44:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-10-15 03:44:10,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 775 transitions. [2020-10-15 03:44:10,130 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 775 transitions. Word has length 59 [2020-10-15 03:44:10,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:10,130 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 775 transitions. [2020-10-15 03:44:10,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:44:10,131 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 775 transitions. [2020-10-15 03:44:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 03:44:10,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:10,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:44:10,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:44:10,133 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:10,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:10,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1335281413, now seen corresponding path program 1 times [2020-10-15 03:44:10,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:10,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851489762] [2020-10-15 03:44:10,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:10,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:11,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:11,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:11,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:11,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:11,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:11,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:15,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:15,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 03:44:15,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:44:15,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:44:15,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:15,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:44:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:44:15,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:15,720 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:44:15,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:15,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:15,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:15,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:15,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:15,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:44:15,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:15,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:15,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:15,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851489762] [2020-10-15 03:44:15,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:15,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:44:15,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955157750] [2020-10-15 03:44:15,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:44:15,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:15,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:44:15,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:44:15,764 INFO L87 Difference]: Start difference. First operand 590 states and 775 transitions. Second operand 8 states. [2020-10-15 03:44:16,291 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-15 03:44:19,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:19,677 INFO L93 Difference]: Finished difference Result 1630 states and 2253 transitions. [2020-10-15 03:44:19,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:44:19,677 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-15 03:44:19,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:19,683 INFO L225 Difference]: With dead ends: 1630 [2020-10-15 03:44:19,683 INFO L226 Difference]: Without dead ends: 1389 [2020-10-15 03:44:19,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:44:19,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-10-15 03:44:19,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 594. [2020-10-15 03:44:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-10-15 03:44:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 779 transitions. [2020-10-15 03:44:19,741 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 779 transitions. Word has length 59 [2020-10-15 03:44:19,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:19,742 INFO L479 AbstractCegarLoop]: Abstraction has 594 states and 779 transitions. [2020-10-15 03:44:19,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:44:19,742 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 779 transitions. [2020-10-15 03:44:19,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 03:44:19,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:19,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:44:19,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:44:19,744 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:19,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:19,744 INFO L82 PathProgramCache]: Analyzing trace with hash -734732882, now seen corresponding path program 1 times [2020-10-15 03:44:19,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:19,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534930271] [2020-10-15 03:44:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:19,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:19,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:19,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:19,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:19,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:20,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:21,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:21,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:21,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:21,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:21,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:21,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:22,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:23,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:24,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:24,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 03:44:24,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:44:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:44:24,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:24,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:24,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:44:24,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:44:24,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:44:24,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:25,438 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:44:25,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:25,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:25,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:25,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:25,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:25,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:44:25,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:25,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:25,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:25,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:25,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:25,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:25,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534930271] [2020-10-15 03:44:25,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:25,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:44:25,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346721103] [2020-10-15 03:44:25,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:44:25,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:25,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:44:25,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:44:25,468 INFO L87 Difference]: Start difference. First operand 594 states and 779 transitions. Second operand 9 states. [2020-10-15 03:44:26,025 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-15 03:44:28,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:28,938 INFO L93 Difference]: Finished difference Result 974 states and 1325 transitions. [2020-10-15 03:44:28,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:44:28,939 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-15 03:44:28,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:28,942 INFO L225 Difference]: With dead ends: 974 [2020-10-15 03:44:28,942 INFO L226 Difference]: Without dead ends: 906 [2020-10-15 03:44:28,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:44:28,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-10-15 03:44:28,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 590. [2020-10-15 03:44:28,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-10-15 03:44:28,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 774 transitions. [2020-10-15 03:44:28,993 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 774 transitions. Word has length 59 [2020-10-15 03:44:28,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:28,994 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 774 transitions. [2020-10-15 03:44:28,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:44:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 774 transitions. [2020-10-15 03:44:28,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 03:44:28,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:28,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:44:28,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:44:28,995 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:28,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:28,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1001607499, now seen corresponding path program 1 times [2020-10-15 03:44:28,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:28,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509273996] [2020-10-15 03:44:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:29,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:29,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:29,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:29,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:29,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:29,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:30,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:30,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:30,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:30,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:31,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:31,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:31,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:31,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:32,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:32,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:33,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:33,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:34,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:34,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 03:44:34,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-15 03:44:34,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:44:34,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:34,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:34,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:44:34,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:44:34,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 03:44:34,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:34,575 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:44:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:34,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:34,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:34,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:34,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:34,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:44:34,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:34,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:34,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:34,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:34,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:34,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:34,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509273996] [2020-10-15 03:44:34,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:34,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:44:34,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624668002] [2020-10-15 03:44:34,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:44:34,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:34,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:44:34,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:44:34,607 INFO L87 Difference]: Start difference. First operand 590 states and 774 transitions. Second operand 9 states. [2020-10-15 03:44:35,144 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-15 03:44:37,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:37,790 INFO L93 Difference]: Finished difference Result 1551 states and 2125 transitions. [2020-10-15 03:44:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:44:37,791 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-15 03:44:37,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:37,795 INFO L225 Difference]: With dead ends: 1551 [2020-10-15 03:44:37,795 INFO L226 Difference]: Without dead ends: 1068 [2020-10-15 03:44:37,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:44:37,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-10-15 03:44:37,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 780. [2020-10-15 03:44:37,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2020-10-15 03:44:37,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1046 transitions. [2020-10-15 03:44:37,924 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1046 transitions. Word has length 60 [2020-10-15 03:44:37,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:37,925 INFO L479 AbstractCegarLoop]: Abstraction has 780 states and 1046 transitions. [2020-10-15 03:44:37,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:44:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1046 transitions. [2020-10-15 03:44:37,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:44:37,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:37,927 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] [2020-10-15 03:44:37,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:44:37,927 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:37,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1014619629, now seen corresponding path program 1 times [2020-10-15 03:44:37,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:37,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5217005] [2020-10-15 03:44:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:37,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:38,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:38,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:38,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:40,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:40,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:44:40,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:44:40,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2982 [2020-10-15 03:44:40,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:40,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:40,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:44:40,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:44:40,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:44:40,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:41,483 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:44:41,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:41,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:41,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:41,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:44:41,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:41,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:41,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5217005] [2020-10-15 03:44:41,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:41,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:44:41,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905971395] [2020-10-15 03:44:41,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:44:41,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:41,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:44:41,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:41,515 INFO L87 Difference]: Start difference. First operand 780 states and 1046 transitions. Second operand 6 states. [2020-10-15 03:44:42,116 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-15 03:44:44,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:44,107 INFO L93 Difference]: Finished difference Result 1860 states and 2648 transitions. [2020-10-15 03:44:44,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:44:44,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:44:44,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:44,112 INFO L225 Difference]: With dead ends: 1860 [2020-10-15 03:44:44,113 INFO L226 Difference]: Without dead ends: 1626 [2020-10-15 03:44:44,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:44:44,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2020-10-15 03:44:44,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1084. [2020-10-15 03:44:44,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2020-10-15 03:44:44,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1490 transitions. [2020-10-15 03:44:44,285 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1490 transitions. Word has length 71 [2020-10-15 03:44:44,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:44,286 INFO L479 AbstractCegarLoop]: Abstraction has 1084 states and 1490 transitions. [2020-10-15 03:44:44,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:44:44,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1490 transitions. [2020-10-15 03:44:44,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:44:44,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:44,288 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] [2020-10-15 03:44:44,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:44:44,289 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:44,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:44,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1333241208, now seen corresponding path program 1 times [2020-10-15 03:44:44,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:44,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614366728] [2020-10-15 03:44:44,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:44,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:44,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:44,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:44,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:46,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:46,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:44:46,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:44:46,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2655 [2020-10-15 03:44:46,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:46,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:44:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 03:44:46,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:47,503 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:44:47,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:47,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:47,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:47,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:47,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:47,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:44:47,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:47,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:47,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:47,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:47,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:47,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:47,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614366728] [2020-10-15 03:44:47,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:47,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:44:47,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332871296] [2020-10-15 03:44:47,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:44:47,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:47,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:44:47,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:47,549 INFO L87 Difference]: Start difference. First operand 1084 states and 1490 transitions. Second operand 6 states. [2020-10-15 03:44:48,635 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 286 DAG size of output: 285 [2020-10-15 03:44:50,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:50,412 INFO L93 Difference]: Finished difference Result 2060 states and 2913 transitions. [2020-10-15 03:44:50,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:44:50,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-15 03:44:50,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:50,417 INFO L225 Difference]: With dead ends: 2060 [2020-10-15 03:44:50,417 INFO L226 Difference]: Without dead ends: 1346 [2020-10-15 03:44:50,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:44:50,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2020-10-15 03:44:50,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1344. [2020-10-15 03:44:50,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-10-15 03:44:50,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1882 transitions. [2020-10-15 03:44:50,649 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1882 transitions. Word has length 72 [2020-10-15 03:44:50,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:50,650 INFO L479 AbstractCegarLoop]: Abstraction has 1344 states and 1882 transitions. [2020-10-15 03:44:50,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:44:50,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1882 transitions. [2020-10-15 03:44:50,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:44:50,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:50,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:44:50,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:44:50,653 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:50,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:50,653 INFO L82 PathProgramCache]: Analyzing trace with hash 2090924500, now seen corresponding path program 1 times [2020-10-15 03:44:50,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:50,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243573980] [2020-10-15 03:44:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:50,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:50,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:50,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:50,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:50,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:51,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:53,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:55,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:55,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:44:55,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:44:55,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:44:55,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:55,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:44:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 03:44:55,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:56,192 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:44:56,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:56,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:56,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:56,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:56,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:56,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:44:56,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:56,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:56,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:56,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243573980] [2020-10-15 03:44:56,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:56,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:44:56,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465652462] [2020-10-15 03:44:56,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:44:56,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:56,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:44:56,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:56,232 INFO L87 Difference]: Start difference. First operand 1344 states and 1882 transitions. Second operand 6 states. [2020-10-15 03:44:56,773 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-15 03:44:58,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:58,639 INFO L93 Difference]: Finished difference Result 3356 states and 4778 transitions. [2020-10-15 03:44:58,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:44:58,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-15 03:44:58,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:58,646 INFO L225 Difference]: With dead ends: 3356 [2020-10-15 03:44:58,646 INFO L226 Difference]: Without dead ends: 2196 [2020-10-15 03:44:58,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:44:58,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2020-10-15 03:44:59,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2194. [2020-10-15 03:44:59,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2194 states. [2020-10-15 03:44:59,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3096 transitions. [2020-10-15 03:44:59,061 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3096 transitions. Word has length 73 [2020-10-15 03:44:59,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:59,062 INFO L479 AbstractCegarLoop]: Abstraction has 2194 states and 3096 transitions. [2020-10-15 03:44:59,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:44:59,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3096 transitions. [2020-10-15 03:44:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:44:59,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:59,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:44:59,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:44:59,066 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:59,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:59,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1554571823, now seen corresponding path program 1 times [2020-10-15 03:44:59,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:59,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431929782] [2020-10-15 03:44:59,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:59,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:59,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:59,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:59,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:01,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:01,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:45:01,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:45:01,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2192 [2020-10-15 03:45:01,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:01,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:01,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:45:01,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:45:01,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 03:45:01,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:01,862 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:45:01,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:01,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:01,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:01,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:01,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:45:01,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:01,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:45:01,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:01,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:45:01,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:01,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431929782] [2020-10-15 03:45:01,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:01,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:45:01,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82537971] [2020-10-15 03:45:01,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:45:01,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:01,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:45:01,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:01,915 INFO L87 Difference]: Start difference. First operand 2194 states and 3096 transitions. Second operand 6 states. [2020-10-15 03:45:02,485 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-15 03:45:04,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:04,300 INFO L93 Difference]: Finished difference Result 4718 states and 6763 transitions. [2020-10-15 03:45:04,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:45:04,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-15 03:45:04,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:04,309 INFO L225 Difference]: With dead ends: 4718 [2020-10-15 03:45:04,309 INFO L226 Difference]: Without dead ends: 2798 [2020-10-15 03:45:04,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:45:04,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2020-10-15 03:45:04,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2796. [2020-10-15 03:45:04,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2796 states. [2020-10-15 03:45:04,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2796 states to 2796 states and 3984 transitions. [2020-10-15 03:45:04,860 INFO L78 Accepts]: Start accepts. Automaton has 2796 states and 3984 transitions. Word has length 73 [2020-10-15 03:45:04,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:04,860 INFO L479 AbstractCegarLoop]: Abstraction has 2796 states and 3984 transitions. [2020-10-15 03:45:04,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:45:04,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2796 states and 3984 transitions. [2020-10-15 03:45:04,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:45:04,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:04,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:04,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:45:04,865 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:04,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:04,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1004206986, now seen corresponding path program 1 times [2020-10-15 03:45:04,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:04,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397975438] [2020-10-15 03:45:04,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:04,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:04,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:04,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:05,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:05,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:07,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:07,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:45:07,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:45:07,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2248 [2020-10-15 03:45:07,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:07,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:07,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:45:07,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:45:07,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 03:45:07,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:07,679 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:45:07,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:07,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:07,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:07,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:07,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:07,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:45:07,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:07,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:07,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:07,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:07,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:07,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:07,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397975438] [2020-10-15 03:45:07,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:07,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:45:07,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956455780] [2020-10-15 03:45:07,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:45:07,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:07,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:45:07,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:07,710 INFO L87 Difference]: Start difference. First operand 2796 states and 3984 transitions. Second operand 6 states. [2020-10-15 03:45:11,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:11,079 INFO L93 Difference]: Finished difference Result 8198 states and 11831 transitions. [2020-10-15 03:45:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:45:11,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-15 03:45:11,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:11,103 INFO L225 Difference]: With dead ends: 8198 [2020-10-15 03:45:11,103 INFO L226 Difference]: Without dead ends: 5819 [2020-10-15 03:45:11,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:11,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5819 states. [2020-10-15 03:45:12,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5819 to 5815. [2020-10-15 03:45:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5815 states. [2020-10-15 03:45:12,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5815 states to 5815 states and 8311 transitions. [2020-10-15 03:45:12,310 INFO L78 Accepts]: Start accepts. Automaton has 5815 states and 8311 transitions. Word has length 73 [2020-10-15 03:45:12,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:12,310 INFO L479 AbstractCegarLoop]: Abstraction has 5815 states and 8311 transitions. [2020-10-15 03:45:12,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:45:12,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5815 states and 8311 transitions. [2020-10-15 03:45:12,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:45:12,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:12,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:12,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:45:12,315 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:12,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:12,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1143076069, now seen corresponding path program 1 times [2020-10-15 03:45:12,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:12,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741118011] [2020-10-15 03:45:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:12,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:12,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:12,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:12,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:15,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:15,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:45:15,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:45:15,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3485 [2020-10-15 03:45:15,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:15,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:45:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:45:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:45:15,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:16,383 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:45:16,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:16,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:16,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:16,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:16,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:45:16,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:16,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:16,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:16,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741118011] [2020-10-15 03:45:16,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:16,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:45:16,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885578068] [2020-10-15 03:45:16,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:45:16,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:16,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:45:16,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:45:16,411 INFO L87 Difference]: Start difference. First operand 5815 states and 8311 transitions. Second operand 8 states. [2020-10-15 03:45:17,010 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-15 03:45:21,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:21,488 INFO L93 Difference]: Finished difference Result 16088 states and 23230 transitions. [2020-10-15 03:45:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:45:21,488 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-10-15 03:45:21,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:21,512 INFO L225 Difference]: With dead ends: 16088 [2020-10-15 03:45:21,512 INFO L226 Difference]: Without dead ends: 11216 [2020-10-15 03:45:21,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:45:21,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11216 states. [2020-10-15 03:45:22,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11216 to 5731. [2020-10-15 03:45:22,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5731 states. [2020-10-15 03:45:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5731 states to 5731 states and 8187 transitions. [2020-10-15 03:45:22,878 INFO L78 Accepts]: Start accepts. Automaton has 5731 states and 8187 transitions. Word has length 74 [2020-10-15 03:45:22,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:22,878 INFO L479 AbstractCegarLoop]: Abstraction has 5731 states and 8187 transitions. [2020-10-15 03:45:22,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:45:22,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5731 states and 8187 transitions. [2020-10-15 03:45:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:45:22,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:22,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:22,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:45:22,883 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:22,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:22,883 INFO L82 PathProgramCache]: Analyzing trace with hash -298954303, now seen corresponding path program 1 times [2020-10-15 03:45:22,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:22,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574965724] [2020-10-15 03:45:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:22,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:22,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:22,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:23,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:24,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:26,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:26,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:45:26,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:45:26,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3874 [2020-10-15 03:45:26,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:26,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:45:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:45:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:45:26,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:27,319 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:45:27,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:27,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:27,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:27,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:27,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:27,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:45:27,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:27,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:27,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:27,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574965724] [2020-10-15 03:45:27,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:27,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:45:27,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720187499] [2020-10-15 03:45:27,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:45:27,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:27,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:45:27,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:45:27,349 INFO L87 Difference]: Start difference. First operand 5731 states and 8187 transitions. Second operand 8 states. [2020-10-15 03:45:27,927 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-15 03:45:33,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:33,814 INFO L93 Difference]: Finished difference Result 19208 states and 27738 transitions. [2020-10-15 03:45:33,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:45:33,814 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-10-15 03:45:33,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:33,846 INFO L225 Difference]: With dead ends: 19208 [2020-10-15 03:45:33,846 INFO L226 Difference]: Without dead ends: 15438 [2020-10-15 03:45:33,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:45:33,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15438 states. [2020-10-15 03:45:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15438 to 5797. [2020-10-15 03:45:35,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5797 states. [2020-10-15 03:45:35,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5797 states to 5797 states and 8256 transitions. [2020-10-15 03:45:35,301 INFO L78 Accepts]: Start accepts. Automaton has 5797 states and 8256 transitions. Word has length 74 [2020-10-15 03:45:35,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:35,301 INFO L479 AbstractCegarLoop]: Abstraction has 5797 states and 8256 transitions. [2020-10-15 03:45:35,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:45:35,302 INFO L276 IsEmpty]: Start isEmpty. Operand 5797 states and 8256 transitions. [2020-10-15 03:45:35,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:45:35,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:35,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:35,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 03:45:35,306 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:35,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:35,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1248913492, now seen corresponding path program 1 times [2020-10-15 03:45:35,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:35,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824140] [2020-10-15 03:45:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:35,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:35,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:35,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:35,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:38,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:38,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:45:38,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:45:38,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3354 [2020-10-15 03:45:38,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:38,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:45:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:45:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 03:45:38,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:39,260 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:45:39,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:39,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:39,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:39,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:39,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:45:39,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:39,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:39,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824140] [2020-10-15 03:45:39,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:39,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:45:39,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297555580] [2020-10-15 03:45:39,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:45:39,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:39,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:45:39,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:45:39,292 INFO L87 Difference]: Start difference. First operand 5797 states and 8256 transitions. Second operand 7 states. [2020-10-15 03:45:39,888 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2020-10-15 03:45:46,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:46,051 INFO L93 Difference]: Finished difference Result 18763 states and 26981 transitions. [2020-10-15 03:45:46,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:45:46,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-15 03:45:46,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:46,088 INFO L225 Difference]: With dead ends: 18763 [2020-10-15 03:45:46,088 INFO L226 Difference]: Without dead ends: 17717 [2020-10-15 03:45:46,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:45:46,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17717 states. [2020-10-15 03:45:47,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17717 to 5797. [2020-10-15 03:45:47,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5797 states. [2020-10-15 03:45:47,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5797 states to 5797 states and 8252 transitions. [2020-10-15 03:45:47,451 INFO L78 Accepts]: Start accepts. Automaton has 5797 states and 8252 transitions. Word has length 74 [2020-10-15 03:45:47,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:47,451 INFO L479 AbstractCegarLoop]: Abstraction has 5797 states and 8252 transitions. [2020-10-15 03:45:47,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:45:47,452 INFO L276 IsEmpty]: Start isEmpty. Operand 5797 states and 8252 transitions. [2020-10-15 03:45:47,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:45:47,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:47,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:47,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 03:45:47,457 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:47,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:47,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1098466720, now seen corresponding path program 1 times [2020-10-15 03:45:47,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:47,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119215861] [2020-10-15 03:45:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:47,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:47,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:47,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:47,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:48,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:48,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:45:48,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:45:48,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-10-15 03:45:48,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:48,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:48,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:45:48,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 03:45:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 03:45:48,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:48,832 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:45:48,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:48,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:48,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:48,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:48,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:45:48,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:48,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:48,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:48,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119215861] [2020-10-15 03:45:48,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:48,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:45:48,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787409007] [2020-10-15 03:45:48,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:45:48,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:48,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:45:48,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:45:48,860 INFO L87 Difference]: Start difference. First operand 5797 states and 8252 transitions. Second operand 4 states. [2020-10-15 03:45:49,392 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-15 03:45:53,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:53,057 INFO L93 Difference]: Finished difference Result 14345 states and 20590 transitions. [2020-10-15 03:45:53,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:45:53,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-15 03:45:53,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:53,067 INFO L225 Difference]: With dead ends: 14345 [2020-10-15 03:45:53,067 INFO L226 Difference]: Without dead ends: 9855 [2020-10-15 03:45:53,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:45:53,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9855 states. [2020-10-15 03:45:55,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9855 to 9265. [2020-10-15 03:45:55,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9265 states. [2020-10-15 03:45:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9265 states to 9265 states and 13172 transitions. [2020-10-15 03:45:55,127 INFO L78 Accepts]: Start accepts. Automaton has 9265 states and 13172 transitions. Word has length 75 [2020-10-15 03:45:55,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:55,127 INFO L479 AbstractCegarLoop]: Abstraction has 9265 states and 13172 transitions. [2020-10-15 03:45:55,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:45:55,127 INFO L276 IsEmpty]: Start isEmpty. Operand 9265 states and 13172 transitions. [2020-10-15 03:45:55,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:45:55,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:55,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:55,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 03:45:55,132 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:55,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:55,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1172463621, now seen corresponding path program 1 times [2020-10-15 03:45:55,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:55,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191873407] [2020-10-15 03:45:55,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:55,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:55,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:55,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:57,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:57,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:45:57,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:45:57,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2727 [2020-10-15 03:45:57,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:57,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:57,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:45:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:45:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 03:45:57,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:58,518 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 03:45:58,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:58,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:58,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:58,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:58,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:45:58,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:58,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:58,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:58,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:58,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:58,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:58,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191873407] [2020-10-15 03:45:58,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:58,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:45:58,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699015532] [2020-10-15 03:45:58,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:45:58,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:58,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:45:58,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:45:58,552 INFO L87 Difference]: Start difference. First operand 9265 states and 13172 transitions. Second operand 10 states. [2020-10-15 03:45:59,139 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 284