/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:36:55,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:36:55,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:36:55,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:36:55,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:36:55,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:36:55,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:36:55,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:36:55,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:36:55,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:36:55,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:36:55,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:36:55,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:36:55,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:36:55,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:36:55,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:36:55,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:36:55,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:36:55,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:36:55,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:36:55,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:36:55,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:36:55,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:36:55,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:36:55,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:36:55,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:36:55,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:36:55,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:36:55,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:36:55,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:36:55,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:36:55,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:36:55,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:36:55,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:36:55,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:36:55,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:36:55,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:36:55,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:36:55,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:36:55,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:36:55,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:36:55,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:36:55,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:36:55,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:36:55,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:36:55,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:36:55,382 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:36:55,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:36:55,382 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:36:55,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:36:55,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:36:55,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:36:55,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:36:55,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:36:55,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:36:55,383 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:36:55,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:36:55,384 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:36:55,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:36:55,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:36:55,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:36:55,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:36:55,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:36:55,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:36:55,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:36:55,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:36:55,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:36:55,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:36:55,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:36:55,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:36:55,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:36:55,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:36:55,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:36:55,713 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:36:55,716 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:36:55,718 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:36:55,718 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:36:55,719 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-14 08:36:55,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bfff3ec1/46c8dca33f4548258d105639c9c7c939/FLAG642e7995e [2020-10-14 08:36:56,340 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:36:56,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-14 08:36:56,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bfff3ec1/46c8dca33f4548258d105639c9c7c939/FLAG642e7995e [2020-10-14 08:36:56,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bfff3ec1/46c8dca33f4548258d105639c9c7c939 [2020-10-14 08:36:56,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:36:56,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:36:56,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:36:56,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:36:56,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:36:56,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:36:56" (1/1) ... [2020-10-14 08:36:56,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d77a43a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:36:56, skipping insertion in model container [2020-10-14 08:36:56,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:36:56" (1/1) ... [2020-10-14 08:36:56,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:36:56,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:36:57,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:36:57,193 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:36:57,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:36:57,334 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:36:57,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:36:57 WrapperNode [2020-10-14 08:36:57,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:36:57,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:36:57,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:36:57,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:36:57,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:36:57" (1/1) ... [2020-10-14 08:36:57,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:36:57" (1/1) ... [2020-10-14 08:36:57,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:36:57" (1/1) ... [2020-10-14 08:36:57,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:36:57" (1/1) ... [2020-10-14 08:36:57,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:36:57" (1/1) ... [2020-10-14 08:36:57,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:36:57" (1/1) ... [2020-10-14 08:36:57,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:36:57" (1/1) ... [2020-10-14 08:36:57,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:36:57,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:36:57,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:36:57,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:36:57,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:36:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:36:57,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:36:57,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:36:57,499 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:36:57,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:36:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:36:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:36:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:36:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:36:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:36:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:36:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:36:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:36:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:36:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:36:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:36:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:36:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:36:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:36:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:36:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:36:58,586 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:36:58,586 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:36:58,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:36:58 BoogieIcfgContainer [2020-10-14 08:36:58,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:36:58,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:36:58,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:36:58,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:36:58,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:36:56" (1/3) ... [2020-10-14 08:36:58,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8af7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:36:58, skipping insertion in model container [2020-10-14 08:36:58,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:36:57" (2/3) ... [2020-10-14 08:36:58,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8af7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:36:58, skipping insertion in model container [2020-10-14 08:36:58,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:36:58" (3/3) ... [2020-10-14 08:36:58,612 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-14 08:36:58,624 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:36:58,637 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-14 08:36:58,652 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-14 08:36:58,679 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:36:58,680 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:36:58,680 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:36:58,680 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:36:58,686 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:36:58,686 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:36:58,686 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:36:58,687 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:36:58,713 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states. [2020-10-14 08:36:58,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 08:36:58,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:36:58,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:36:58,726 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:36:58,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:36:58,732 INFO L82 PathProgramCache]: Analyzing trace with hash -932481986, now seen corresponding path program 1 times [2020-10-14 08:36:58,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:36:58,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340187439] [2020-10-14 08:36:58,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:36:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:36:59,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:59,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:59,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:59,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:00,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:00,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:01,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:01,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:03,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:03,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:03,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:03,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:03,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:03,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:03,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:04,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:04,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 08:37:04,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:37:04,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-14 08:37:04,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:04,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:37:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 08:37:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 08:37:04,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 08:37:04,485 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:37:04,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:04,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:04,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:04,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:04,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:37:04,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:04,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:37:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:37:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:37:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:04,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340187439] [2020-10-14 08:37:04,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:04,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:37:04,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249306303] [2020-10-14 08:37:04,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:37:04,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:04,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:37:04,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:37:04,575 INFO L87 Difference]: Start difference. First operand 212 states. Second operand 6 states. [2020-10-14 08:37:04,855 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-14 08:37:06,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:37:06,785 INFO L93 Difference]: Finished difference Result 768 states and 1243 transitions. [2020-10-14 08:37:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:37:06,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-14 08:37:06,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:37:06,809 INFO L225 Difference]: With dead ends: 768 [2020-10-14 08:37:06,810 INFO L226 Difference]: Without dead ends: 681 [2020-10-14 08:37:06,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:37:06,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-10-14 08:37:06,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 414. [2020-10-14 08:37:06,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-14 08:37:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 562 transitions. [2020-10-14 08:37:06,924 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 562 transitions. Word has length 51 [2020-10-14 08:37:06,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:37:06,925 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 562 transitions. [2020-10-14 08:37:06,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:37:06,925 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 562 transitions. [2020-10-14 08:37:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 08:37:06,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:37:06,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:37:06,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:37:06,941 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:37:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:37:06,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1841418149, now seen corresponding path program 1 times [2020-10-14 08:37:06,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:37:06,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268886233] [2020-10-14 08:37:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:37:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:06,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:07,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:07,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:07,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:07,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:07,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:07,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:09,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:09,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:09,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:10,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:11,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:11,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:11,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:11,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:11,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:11,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 08:37:11,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:37:11,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:37:11,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:11,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:11,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:37:11,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:37:11,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 08:37:11,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:37:12,345 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:37:12,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:12,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:12,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:12,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:12,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 08:37:12,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:12,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:37:12,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:12,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:37:12,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:37:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:12,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268886233] [2020-10-14 08:37:12,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:12,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:37:12,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320178686] [2020-10-14 08:37:12,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:37:12,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:12,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:37:12,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:37:12,421 INFO L87 Difference]: Start difference. First operand 414 states and 562 transitions. Second operand 7 states. [2020-10-14 08:37:12,668 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-14 08:37:14,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:37:14,023 INFO L93 Difference]: Finished difference Result 1306 states and 1867 transitions. [2020-10-14 08:37:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:37:14,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-14 08:37:14,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:37:14,032 INFO L225 Difference]: With dead ends: 1306 [2020-10-14 08:37:14,032 INFO L226 Difference]: Without dead ends: 985 [2020-10-14 08:37:14,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-14 08:37:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2020-10-14 08:37:14,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 422. [2020-10-14 08:37:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-14 08:37:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 566 transitions. [2020-10-14 08:37:14,121 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 566 transitions. Word has length 51 [2020-10-14 08:37:14,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:37:14,122 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 566 transitions. [2020-10-14 08:37:14,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:37:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 566 transitions. [2020-10-14 08:37:14,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 08:37:14,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:37:14,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:37:14,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:37:14,128 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:37:14,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:37:14,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1711023661, now seen corresponding path program 1 times [2020-10-14 08:37:14,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:37:14,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047462398] [2020-10-14 08:37:14,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:37:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:14,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:14,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:14,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:14,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:15,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:15,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:15,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:16,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:16,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:17,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:17,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:17,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:17,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:18,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:19,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:19,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:19,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 08:37:19,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 08:37:19,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:37:19,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:19,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:19,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:37:19,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:37:19,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 08:37:19,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:37:19,444 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:37:19,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:19,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:19,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:19,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:19,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:19,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 08:37:19,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:19,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:37:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:37:19,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 08:37:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:19,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047462398] [2020-10-14 08:37:19,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:19,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:37:19,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974292765] [2020-10-14 08:37:19,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:37:19,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:19,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:37:19,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:37:19,511 INFO L87 Difference]: Start difference. First operand 422 states and 566 transitions. Second operand 6 states. [2020-10-14 08:37:19,697 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:37:20,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:37:20,468 INFO L93 Difference]: Finished difference Result 878 states and 1214 transitions. [2020-10-14 08:37:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:37:20,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-14 08:37:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:37:20,473 INFO L225 Difference]: With dead ends: 878 [2020-10-14 08:37:20,473 INFO L226 Difference]: Without dead ends: 601 [2020-10-14 08:37:20,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:37:20,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-10-14 08:37:20,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 577. [2020-10-14 08:37:20,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-10-14 08:37:20,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 803 transitions. [2020-10-14 08:37:20,509 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 803 transitions. Word has length 52 [2020-10-14 08:37:20,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:37:20,510 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 803 transitions. [2020-10-14 08:37:20,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:37:20,510 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 803 transitions. [2020-10-14 08:37:20,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 08:37:20,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:37:20,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:37:20,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:37:20,512 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:37:20,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:37:20,512 INFO L82 PathProgramCache]: Analyzing trace with hash -15231794, now seen corresponding path program 1 times [2020-10-14 08:37:20,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:37:20,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431678559] [2020-10-14 08:37:20,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:37:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:20,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:20,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:21,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:21,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:21,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:21,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:21,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:21,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:22,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:25,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:25,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 08:37:25,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:37:25,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 08:37:25,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:25,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:37:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 08:37:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 08:37:25,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:37:25,719 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:37:25,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:25,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:25,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:25,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:25,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:25,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:37:25,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:25,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:37:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:37:25,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:37:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:25,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431678559] [2020-10-14 08:37:25,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:25,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:37:25,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004463180] [2020-10-14 08:37:25,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:37:25,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:25,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:37:25,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:37:25,746 INFO L87 Difference]: Start difference. First operand 577 states and 803 transitions. Second operand 6 states. [2020-10-14 08:37:25,903 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-14 08:37:27,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:37:27,258 INFO L93 Difference]: Finished difference Result 3217 states and 4734 transitions. [2020-10-14 08:37:27,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:37:27,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-14 08:37:27,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:37:27,278 INFO L225 Difference]: With dead ends: 3217 [2020-10-14 08:37:27,278 INFO L226 Difference]: Without dead ends: 2831 [2020-10-14 08:37:27,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:37:27,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2020-10-14 08:37:27,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 1807. [2020-10-14 08:37:27,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2020-10-14 08:37:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2600 transitions. [2020-10-14 08:37:27,482 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2600 transitions. Word has length 52 [2020-10-14 08:37:27,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:37:27,483 INFO L479 AbstractCegarLoop]: Abstraction has 1807 states and 2600 transitions. [2020-10-14 08:37:27,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:37:27,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2600 transitions. [2020-10-14 08:37:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 08:37:27,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:37:27,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:37:27,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:37:27,490 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:37:27,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:37:27,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1416915955, now seen corresponding path program 1 times [2020-10-14 08:37:27,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:37:27,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718354979] [2020-10-14 08:37:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:37:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:27,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:27,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:27,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:27,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:28,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:28,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:28,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:28,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:28,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:29,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:29,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:30,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:32,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:32,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 08:37:32,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:37:32,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:37:32,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:32,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:37:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:37:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 08:37:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:37:32,780 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:37:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:32,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:32,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:32,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:32,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:32,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 08:37:32,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:32,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:37:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:32,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:37:32,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:37:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:32,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718354979] [2020-10-14 08:37:32,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:32,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:37:32,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236960271] [2020-10-14 08:37:32,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:37:32,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:32,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:37:32,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:37:32,843 INFO L87 Difference]: Start difference. First operand 1807 states and 2600 transitions. Second operand 6 states. [2020-10-14 08:37:33,102 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:37:33,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:37:33,826 INFO L93 Difference]: Finished difference Result 2477 states and 3605 transitions. [2020-10-14 08:37:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:37:33,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-14 08:37:33,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:37:33,835 INFO L225 Difference]: With dead ends: 2477 [2020-10-14 08:37:33,835 INFO L226 Difference]: Without dead ends: 1272 [2020-10-14 08:37:33,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:37:33,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2020-10-14 08:37:33,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 936. [2020-10-14 08:37:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 936 states. [2020-10-14 08:37:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1324 transitions. [2020-10-14 08:37:33,930 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1324 transitions. Word has length 53 [2020-10-14 08:37:33,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:37:33,932 INFO L479 AbstractCegarLoop]: Abstraction has 936 states and 1324 transitions. [2020-10-14 08:37:33,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:37:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1324 transitions. [2020-10-14 08:37:33,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 08:37:33,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:37:33,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:37:33,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:37:33,935 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:37:33,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:37:33,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1807970368, now seen corresponding path program 1 times [2020-10-14 08:37:33,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:37:33,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071302143] [2020-10-14 08:37:33,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:37:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:33,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:34,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:34,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:34,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:34,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:34,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:34,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:34,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:35,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:35,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:35,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:35,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:35,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:36,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:36,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:36,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:36,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:38,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:38,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 08:37:38,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:37:38,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:37:38,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:38,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:37:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:37:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 08:37:38,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:37:39,231 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:37:39,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:39,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:39,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:39,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:39,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:39,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:37:39,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:39,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:37:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:37:39,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:37:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:39,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071302143] [2020-10-14 08:37:39,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:39,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:37:39,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364175636] [2020-10-14 08:37:39,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:37:39,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:39,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:37:39,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:37:39,276 INFO L87 Difference]: Start difference. First operand 936 states and 1324 transitions. Second operand 7 states. [2020-10-14 08:37:39,554 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-14 08:37:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:37:40,320 INFO L93 Difference]: Finished difference Result 1926 states and 2809 transitions. [2020-10-14 08:37:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:37:40,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-14 08:37:40,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:37:40,327 INFO L225 Difference]: With dead ends: 1926 [2020-10-14 08:37:40,327 INFO L226 Difference]: Without dead ends: 1184 [2020-10-14 08:37:40,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:37:40,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2020-10-14 08:37:40,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 846. [2020-10-14 08:37:40,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-10-14 08:37:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1214 transitions. [2020-10-14 08:37:40,390 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1214 transitions. Word has length 53 [2020-10-14 08:37:40,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:37:40,391 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1214 transitions. [2020-10-14 08:37:40,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:37:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1214 transitions. [2020-10-14 08:37:40,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 08:37:40,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:37:40,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:37:40,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:37:40,392 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:37:40,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:37:40,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1570063410, now seen corresponding path program 1 times [2020-10-14 08:37:40,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:37:40,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887153821] [2020-10-14 08:37:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:37:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:40,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:40,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:40,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:40,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:40,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:40,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:41,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:41,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:41,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:41,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:41,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:41,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:41,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:42,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:42,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:42,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:42,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:43,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:43,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:43,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:43,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:45,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:45,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 08:37:45,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 08:37:45,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:37:45,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:45,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:37:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:37:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 08:37:45,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:37:45,633 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:37:45,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:45,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:45,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:45,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:45,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:45,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 08:37:45,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:45,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:37:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:37:45,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:37:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:45,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887153821] [2020-10-14 08:37:45,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:45,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:37:45,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677849254] [2020-10-14 08:37:45,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:37:45,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:45,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:37:45,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:37:45,682 INFO L87 Difference]: Start difference. First operand 846 states and 1214 transitions. Second operand 10 states. [2020-10-14 08:37:45,892 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 08:37:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:37:47,001 INFO L93 Difference]: Finished difference Result 1713 states and 2508 transitions. [2020-10-14 08:37:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 08:37:47,001 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-14 08:37:47,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:37:47,007 INFO L225 Difference]: With dead ends: 1713 [2020-10-14 08:37:47,007 INFO L226 Difference]: Without dead ends: 981 [2020-10-14 08:37:47,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-14 08:37:47,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-10-14 08:37:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 471. [2020-10-14 08:37:47,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-14 08:37:47,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 659 transitions. [2020-10-14 08:37:47,056 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 659 transitions. Word has length 54 [2020-10-14 08:37:47,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:37:47,056 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 659 transitions. [2020-10-14 08:37:47,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:37:47,057 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 659 transitions. [2020-10-14 08:37:47,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 08:37:47,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:37:47,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:37:47,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:37:47,058 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:37:47,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:37:47,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1012630610, now seen corresponding path program 1 times [2020-10-14 08:37:47,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:37:47,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940024934] [2020-10-14 08:37:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:37:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:47,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:47,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:47,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:47,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:47,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:47,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:48,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:48,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:48,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:48,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:48,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:48,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:48,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:49,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:49,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:49,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:49,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:49,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:50,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:50,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:51,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:51,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:52,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:52,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 08:37:52,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 08:37:52,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:37:52,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:52,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:37:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:37:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:37:52,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:37:52,316 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:37:52,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:52,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:52,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:52,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:52,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:52,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:37:52,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:52,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:52,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:37:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:37:52,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:37:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:52,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940024934] [2020-10-14 08:37:52,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:52,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:37:52,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851093742] [2020-10-14 08:37:52,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:37:52,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:52,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:37:52,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:37:52,362 INFO L87 Difference]: Start difference. First operand 471 states and 659 transitions. Second operand 10 states. [2020-10-14 08:37:52,602 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-14 08:37:53,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:37:53,751 INFO L93 Difference]: Finished difference Result 1150 states and 1667 transitions. [2020-10-14 08:37:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 08:37:53,752 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-14 08:37:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:37:53,756 INFO L225 Difference]: With dead ends: 1150 [2020-10-14 08:37:53,757 INFO L226 Difference]: Without dead ends: 1145 [2020-10-14 08:37:53,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-14 08:37:53,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-10-14 08:37:53,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 471. [2020-10-14 08:37:53,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-14 08:37:53,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 658 transitions. [2020-10-14 08:37:53,801 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 658 transitions. Word has length 54 [2020-10-14 08:37:53,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:37:53,801 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 658 transitions. [2020-10-14 08:37:53,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:37:53,802 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 658 transitions. [2020-10-14 08:37:53,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:37:53,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:37:53,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:37:53,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:37:53,803 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:37:53,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:37:53,803 INFO L82 PathProgramCache]: Analyzing trace with hash -2118991285, now seen corresponding path program 1 times [2020-10-14 08:37:53,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:37:53,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879308960] [2020-10-14 08:37:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:37:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:53,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:53,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:54,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:54,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:54,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:54,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:54,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:54,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:55,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:55,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:55,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:55,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:56,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:58,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:58,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:58,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:58,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:58,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:37:58,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:37:58,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:37:58,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:58,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:37:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:37:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 08:37:58,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:37:59,107 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:37:59,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:59,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:59,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:59,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:59,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:37:59,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:59,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:37:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:37:59,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:37:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:59,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879308960] [2020-10-14 08:37:59,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:59,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:37:59,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367973037] [2020-10-14 08:37:59,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:37:59,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:59,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:37:59,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:37:59,137 INFO L87 Difference]: Start difference. First operand 471 states and 658 transitions. Second operand 9 states. [2020-10-14 08:37:59,311 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:38:00,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:00,285 INFO L93 Difference]: Finished difference Result 967 states and 1401 transitions. [2020-10-14 08:38:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:38:00,286 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-14 08:38:00,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:00,290 INFO L225 Difference]: With dead ends: 967 [2020-10-14 08:38:00,290 INFO L226 Difference]: Without dead ends: 648 [2020-10-14 08:38:00,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:38:00,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-10-14 08:38:00,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 470. [2020-10-14 08:38:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-10-14 08:38:00,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 656 transitions. [2020-10-14 08:38:00,343 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 656 transitions. Word has length 56 [2020-10-14 08:38:00,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:00,344 INFO L479 AbstractCegarLoop]: Abstraction has 470 states and 656 transitions. [2020-10-14 08:38:00,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:38:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 656 transitions. [2020-10-14 08:38:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:38:00,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:00,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:00,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:38:00,345 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:00,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:00,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1731503219, now seen corresponding path program 1 times [2020-10-14 08:38:00,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:00,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366246717] [2020-10-14 08:38:00,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:00,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:00,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:00,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:00,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:00,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:01,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:01,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:02,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:02,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:38:02,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:38:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2360 [2020-10-14 08:38:02,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:02,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:38:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:38:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 08:38:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:03,173 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:38:03,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:03,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:03,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:03,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:03,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:03,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:38:03,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:03,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:03,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:03,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:03,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:03,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366246717] [2020-10-14 08:38:03,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:03,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:38:03,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451585487] [2020-10-14 08:38:03,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:38:03,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:03,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:38:03,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:38:03,231 INFO L87 Difference]: Start difference. First operand 470 states and 656 transitions. Second operand 9 states. [2020-10-14 08:38:03,583 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-14 08:38:04,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:04,654 INFO L93 Difference]: Finished difference Result 1020 states and 1469 transitions. [2020-10-14 08:38:04,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 08:38:04,655 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-14 08:38:04,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:04,660 INFO L225 Difference]: With dead ends: 1020 [2020-10-14 08:38:04,660 INFO L226 Difference]: Without dead ends: 1010 [2020-10-14 08:38:04,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-14 08:38:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-14 08:38:04,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 460. [2020-10-14 08:38:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-14 08:38:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 645 transitions. [2020-10-14 08:38:04,717 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 645 transitions. Word has length 56 [2020-10-14 08:38:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:04,717 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 645 transitions. [2020-10-14 08:38:04,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:38:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 645 transitions. [2020-10-14 08:38:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:38:04,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:04,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:04,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:38:04,719 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:04,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:04,719 INFO L82 PathProgramCache]: Analyzing trace with hash 164750282, now seen corresponding path program 1 times [2020-10-14 08:38:04,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:04,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860221618] [2020-10-14 08:38:04,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:04,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:04,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:04,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:05,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:05,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:05,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:06,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:06,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:38:06,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:38:06,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2220 [2020-10-14 08:38:06,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:06,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:06,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:38:06,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:38:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 08:38:06,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:07,176 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:38:07,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:07,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:07,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:07,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:07,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:38:07,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:07,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:07,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:07,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:07,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:07,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860221618] [2020-10-14 08:38:07,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:07,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:38:07,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181382324] [2020-10-14 08:38:07,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:38:07,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:07,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:38:07,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:38:07,217 INFO L87 Difference]: Start difference. First operand 460 states and 645 transitions. Second operand 9 states. [2020-10-14 08:38:07,440 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 08:38:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:08,069 INFO L93 Difference]: Finished difference Result 716 states and 1026 transitions. [2020-10-14 08:38:08,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:38:08,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-14 08:38:08,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:08,073 INFO L225 Difference]: With dead ends: 716 [2020-10-14 08:38:08,073 INFO L226 Difference]: Without dead ends: 392 [2020-10-14 08:38:08,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 08:38:08,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-10-14 08:38:08,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 290. [2020-10-14 08:38:08,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-14 08:38:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 388 transitions. [2020-10-14 08:38:08,105 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 388 transitions. Word has length 56 [2020-10-14 08:38:08,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:08,105 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 388 transitions. [2020-10-14 08:38:08,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:38:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 388 transitions. [2020-10-14 08:38:08,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:38:08,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:08,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:08,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:38:08,107 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:08,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:08,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1471174230, now seen corresponding path program 1 times [2020-10-14 08:38:08,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:08,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460118530] [2020-10-14 08:38:08,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:08,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:08,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:08,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:08,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:08,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:08,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:08,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:08,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:10,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:10,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:38:10,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:38:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2461 [2020-10-14 08:38:10,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:10,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:38:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:38:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 08:38:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:10,811 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:38:10,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:10,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:10,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:10,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:10,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:10,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:38:10,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:10,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:10,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:10,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:10,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:10,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:10,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460118530] [2020-10-14 08:38:10,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:10,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:38:10,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232224436] [2020-10-14 08:38:10,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:38:10,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:10,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:38:10,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:38:10,833 INFO L87 Difference]: Start difference. First operand 290 states and 388 transitions. Second operand 9 states. [2020-10-14 08:38:11,025 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 08:38:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:11,739 INFO L93 Difference]: Finished difference Result 392 states and 532 transitions. [2020-10-14 08:38:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:38:11,740 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-14 08:38:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:11,741 INFO L225 Difference]: With dead ends: 392 [2020-10-14 08:38:11,742 INFO L226 Difference]: Without dead ends: 388 [2020-10-14 08:38:11,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:38:11,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-10-14 08:38:11,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 286. [2020-10-14 08:38:11,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-14 08:38:11,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 384 transitions. [2020-10-14 08:38:11,776 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 384 transitions. Word has length 56 [2020-10-14 08:38:11,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:11,777 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 384 transitions. [2020-10-14 08:38:11,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:38:11,777 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 384 transitions. [2020-10-14 08:38:11,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 08:38:11,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:11,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:11,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:38:11,781 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:11,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:11,781 INFO L82 PathProgramCache]: Analyzing trace with hash -241840063, now seen corresponding path program 1 times [2020-10-14 08:38:11,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:11,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056175489] [2020-10-14 08:38:11,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:11,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:11,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:11,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:12,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:12,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:13,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:13,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 08:38:13,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:38:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1720 [2020-10-14 08:38:13,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:13,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:38:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:38:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 08:38:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:13,744 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:38:13,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:13,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:13,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:13,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:13,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:13,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:38:13,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:13,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:38:13,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:13,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056175489] [2020-10-14 08:38:13,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:13,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:38:13,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122698180] [2020-10-14 08:38:13,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:38:13,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:13,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:38:13,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:38:13,776 INFO L87 Difference]: Start difference. First operand 286 states and 384 transitions. Second operand 10 states. [2020-10-14 08:38:13,999 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-14 08:38:14,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:14,804 INFO L93 Difference]: Finished difference Result 399 states and 538 transitions. [2020-10-14 08:38:14,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 08:38:14,805 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-14 08:38:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:14,806 INFO L225 Difference]: With dead ends: 399 [2020-10-14 08:38:14,806 INFO L226 Difference]: Without dead ends: 392 [2020-10-14 08:38:14,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-10-14 08:38:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-10-14 08:38:14,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 286. [2020-10-14 08:38:14,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-14 08:38:14,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 383 transitions. [2020-10-14 08:38:14,839 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 383 transitions. Word has length 57 [2020-10-14 08:38:14,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:14,839 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 383 transitions. [2020-10-14 08:38:14,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:38:14,840 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 383 transitions. [2020-10-14 08:38:14,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 08:38:14,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:14,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:14,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:38:14,841 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:14,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:14,841 INFO L82 PathProgramCache]: Analyzing trace with hash -2103534015, now seen corresponding path program 1 times [2020-10-14 08:38:14,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:14,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784980030] [2020-10-14 08:38:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:14,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:14,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:14,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:15,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:15,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:15,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:15,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 08:38:15,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:38:15,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-10-14 08:38:15,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:15,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:15,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:38:15,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:38:15,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 08:38:15,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:16,130 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:38:16,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:16,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:16,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:16,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:16,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:16,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:38:16,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:16,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:38:16,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:16,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784980030] [2020-10-14 08:38:16,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:16,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:38:16,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36968998] [2020-10-14 08:38:16,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:38:16,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:16,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:38:16,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:38:16,176 INFO L87 Difference]: Start difference. First operand 286 states and 383 transitions. Second operand 10 states. [2020-10-14 08:38:16,388 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 08:38:17,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:17,319 INFO L93 Difference]: Finished difference Result 643 states and 912 transitions. [2020-10-14 08:38:17,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 08:38:17,320 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-14 08:38:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:17,323 INFO L225 Difference]: With dead ends: 643 [2020-10-14 08:38:17,323 INFO L226 Difference]: Without dead ends: 458 [2020-10-14 08:38:17,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-10-14 08:38:17,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-10-14 08:38:17,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 286. [2020-10-14 08:38:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-14 08:38:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 382 transitions. [2020-10-14 08:38:17,354 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 382 transitions. Word has length 57 [2020-10-14 08:38:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:17,354 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 382 transitions. [2020-10-14 08:38:17,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:38:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 382 transitions. [2020-10-14 08:38:17,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 08:38:17,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:17,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:17,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:38:17,356 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:17,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:17,356 INFO L82 PathProgramCache]: Analyzing trace with hash -303396136, now seen corresponding path program 1 times [2020-10-14 08:38:17,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:17,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297223918] [2020-10-14 08:38:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:17,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:17,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:17,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:17,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:17,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:18,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:18,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:18,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:18,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:18,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:19,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:22,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:22,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 08:38:22,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:38:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4925 [2020-10-14 08:38:22,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:22,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:38:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:38:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 08:38:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:22,511 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:38:22,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:22,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:22,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:22,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:22,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:38:22,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:22,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:38:22,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:22,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:22,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297223918] [2020-10-14 08:38:22,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:22,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:38:22,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357273293] [2020-10-14 08:38:22,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:38:22,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:22,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:38:22,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:38:22,540 INFO L87 Difference]: Start difference. First operand 286 states and 382 transitions. Second operand 10 states. [2020-10-14 08:38:22,760 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-14 08:38:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:23,794 INFO L93 Difference]: Finished difference Result 399 states and 535 transitions. [2020-10-14 08:38:23,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 08:38:23,795 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-14 08:38:23,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:23,796 INFO L225 Difference]: With dead ends: 399 [2020-10-14 08:38:23,797 INFO L226 Difference]: Without dead ends: 392 [2020-10-14 08:38:23,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-14 08:38:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-10-14 08:38:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 286. [2020-10-14 08:38:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-14 08:38:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 381 transitions. [2020-10-14 08:38:23,824 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 381 transitions. Word has length 57 [2020-10-14 08:38:23,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:23,824 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 381 transitions. [2020-10-14 08:38:23,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:38:23,824 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 381 transitions. [2020-10-14 08:38:23,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 08:38:23,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:23,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:23,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:38:23,825 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:23,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:23,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1199216344, now seen corresponding path program 1 times [2020-10-14 08:38:23,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:23,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472425702] [2020-10-14 08:38:23,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:23,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:23,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:24,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:24,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:24,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:24,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 08:38:24,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:38:24,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-10-14 08:38:24,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:24,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:24,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 08:38:24,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:38:24,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 08:38:24,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:24,809 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:38:24,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:24,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:24,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:24,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:24,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:38:24,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:24,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:24,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:24,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:24,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:24,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:24,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:24,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472425702] [2020-10-14 08:38:24,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:24,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 08:38:24,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267278442] [2020-10-14 08:38:24,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 08:38:24,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:24,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 08:38:24,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:38:24,831 INFO L87 Difference]: Start difference. First operand 286 states and 381 transitions. Second operand 8 states. [2020-10-14 08:38:25,020 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 08:38:25,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:25,563 INFO L93 Difference]: Finished difference Result 375 states and 510 transitions. [2020-10-14 08:38:25,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:38:25,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-14 08:38:25,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:25,565 INFO L225 Difference]: With dead ends: 375 [2020-10-14 08:38:25,565 INFO L226 Difference]: Without dead ends: 357 [2020-10-14 08:38:25,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-14 08:38:25,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-14 08:38:25,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 268. [2020-10-14 08:38:25,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-14 08:38:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 361 transitions. [2020-10-14 08:38:25,596 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 361 transitions. Word has length 59 [2020-10-14 08:38:25,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:25,596 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 361 transitions. [2020-10-14 08:38:25,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 08:38:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 361 transitions. [2020-10-14 08:38:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 08:38:25,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:25,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:25,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:38:25,598 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:25,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:25,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2079086952, now seen corresponding path program 1 times [2020-10-14 08:38:25,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:25,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894882867] [2020-10-14 08:38:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:25,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:25,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:25,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:26,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:26,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 08:38:26,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:38:26,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 959 [2020-10-14 08:38:26,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:26,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:26,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:38:26,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:38:26,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 08:38:26,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:26,913 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:38:26,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:26,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:26,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:26,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:26,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:26,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:38:26,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:26,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:26,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:26,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:26,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:26,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:26,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894882867] [2020-10-14 08:38:26,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:26,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:38:26,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586914331] [2020-10-14 08:38:26,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:38:26,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:26,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:38:26,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:38:26,941 INFO L87 Difference]: Start difference. First operand 268 states and 361 transitions. Second operand 9 states. [2020-10-14 08:38:27,167 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 08:38:28,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:28,064 INFO L93 Difference]: Finished difference Result 350 states and 485 transitions. [2020-10-14 08:38:28,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:38:28,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-14 08:38:28,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:28,066 INFO L225 Difference]: With dead ends: 350 [2020-10-14 08:38:28,066 INFO L226 Difference]: Without dead ends: 344 [2020-10-14 08:38:28,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-14 08:38:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-14 08:38:28,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 262. [2020-10-14 08:38:28,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-14 08:38:28,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 354 transitions. [2020-10-14 08:38:28,091 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 354 transitions. Word has length 59 [2020-10-14 08:38:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:28,092 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 354 transitions. [2020-10-14 08:38:28,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:38:28,092 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 354 transitions. [2020-10-14 08:38:28,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 08:38:28,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:28,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:28,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:38:28,093 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:28,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:28,093 INFO L82 PathProgramCache]: Analyzing trace with hash 365915568, now seen corresponding path program 1 times [2020-10-14 08:38:28,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:28,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405668516] [2020-10-14 08:38:28,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:28,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:28,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:28,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:28,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:28,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:28,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 08:38:28,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:38:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-10-14 08:38:28,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:28,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:38:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:38:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 08:38:28,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:29,158 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:38:29,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:29,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:29,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:29,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:29,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:38:29,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:29,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:29,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405668516] [2020-10-14 08:38:29,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:29,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:38:29,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103708042] [2020-10-14 08:38:29,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:38:29,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:29,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:38:29,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:38:29,179 INFO L87 Difference]: Start difference. First operand 262 states and 354 transitions. Second operand 9 states. [2020-10-14 08:38:29,361 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 08:38:29,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:29,863 INFO L93 Difference]: Finished difference Result 262 states and 354 transitions. [2020-10-14 08:38:29,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:38:29,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-14 08:38:29,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:29,866 INFO L225 Difference]: With dead ends: 262 [2020-10-14 08:38:29,866 INFO L226 Difference]: Without dead ends: 250 [2020-10-14 08:38:29,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:38:29,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-14 08:38:29,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-10-14 08:38:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-14 08:38:29,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 341 transitions. [2020-10-14 08:38:29,896 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 341 transitions. Word has length 59 [2020-10-14 08:38:29,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:29,897 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 341 transitions. [2020-10-14 08:38:29,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:38:29,897 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 341 transitions. [2020-10-14 08:38:29,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 08:38:29,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:29,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:29,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:38:29,898 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:29,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:29,898 INFO L82 PathProgramCache]: Analyzing trace with hash 295861071, now seen corresponding path program 1 times [2020-10-14 08:38:29,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:29,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284331757] [2020-10-14 08:38:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:29,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:29,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:29,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:29,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:34,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:34,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:34,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 08:38:34,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:38:34,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:38:34,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:34,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 08:38:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 08:38:34,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:35,081 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:38:35,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:35,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:35,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:35,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:35,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:38:35,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:35,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:35,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:35,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:35,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:35,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:35,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284331757] [2020-10-14 08:38:35,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:35,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:38:35,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761498566] [2020-10-14 08:38:35,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:38:35,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:35,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:38:35,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:38:35,103 INFO L87 Difference]: Start difference. First operand 250 states and 341 transitions. Second operand 4 states. [2020-10-14 08:38:35,261 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:38:35,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:35,635 INFO L93 Difference]: Finished difference Result 554 states and 799 transitions. [2020-10-14 08:38:35,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:38:35,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-14 08:38:35,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:35,637 INFO L225 Difference]: With dead ends: 554 [2020-10-14 08:38:35,637 INFO L226 Difference]: Without dead ends: 394 [2020-10-14 08:38:35,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:38:35,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-14 08:38:35,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2020-10-14 08:38:35,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-10-14 08:38:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 549 transitions. [2020-10-14 08:38:35,677 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 549 transitions. Word has length 77 [2020-10-14 08:38:35,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:35,678 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 549 transitions. [2020-10-14 08:38:35,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:38:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 549 transitions. [2020-10-14 08:38:35,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 08:38:35,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:35,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:35,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:38:35,680 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:35,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:35,680 INFO L82 PathProgramCache]: Analyzing trace with hash 990662574, now seen corresponding path program 1 times [2020-10-14 08:38:35,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:35,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570244626] [2020-10-14 08:38:35,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:35,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:36,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:36,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:36,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:36,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:37,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:37,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:38,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:39,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:40,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:40,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:40,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:40,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 08:38:40,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:38:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:38:40,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:40,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 08:38:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 08:38:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:40,895 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:38:40,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:40,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:40,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:40,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:40,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:40,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:38:40,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:40,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:40,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:40,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:40,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:40,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:40,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570244626] [2020-10-14 08:38:40,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:40,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:38:40,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795012536] [2020-10-14 08:38:40,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:38:40,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:40,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:38:40,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:38:40,925 INFO L87 Difference]: Start difference. First operand 392 states and 549 transitions. Second operand 4 states. [2020-10-14 08:38:41,106 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-14 08:38:41,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:41,605 INFO L93 Difference]: Finished difference Result 964 states and 1399 transitions. [2020-10-14 08:38:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:38:41,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-14 08:38:41,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:41,608 INFO L225 Difference]: With dead ends: 964 [2020-10-14 08:38:41,608 INFO L226 Difference]: Without dead ends: 662 [2020-10-14 08:38:41,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:38:41,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-10-14 08:38:41,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 632. [2020-10-14 08:38:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 632 states. [2020-10-14 08:38:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 901 transitions. [2020-10-14 08:38:41,681 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 901 transitions. Word has length 79 [2020-10-14 08:38:41,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:41,681 INFO L479 AbstractCegarLoop]: Abstraction has 632 states and 901 transitions. [2020-10-14 08:38:41,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:38:41,681 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 901 transitions. [2020-10-14 08:38:41,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 08:38:41,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:41,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:41,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:38:41,683 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:41,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:41,683 INFO L82 PathProgramCache]: Analyzing trace with hash -659931755, now seen corresponding path program 1 times [2020-10-14 08:38:41,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:41,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346733415] [2020-10-14 08:38:41,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:41,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:41,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:41,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:41,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:41,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:41,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:42,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:42,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:42,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:42,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:42,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:43,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:44,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:44,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:46,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:46,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:46,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 08:38:46,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 08:38:46,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:38:46,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:46,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:46,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:46,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 08:38:46,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 08:38:46,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:46,886 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:38:46,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:46,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:46,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:46,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:46,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:46,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:38:46,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:46,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:46,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:46,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:46,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:46,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346733415] [2020-10-14 08:38:46,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:46,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:38:46,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846523024] [2020-10-14 08:38:46,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:38:46,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:46,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:38:46,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:38:46,910 INFO L87 Difference]: Start difference. First operand 632 states and 901 transitions. Second operand 4 states. [2020-10-14 08:38:47,086 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-14 08:38:47,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:47,632 INFO L93 Difference]: Finished difference Result 1652 states and 2399 transitions. [2020-10-14 08:38:47,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:38:47,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-14 08:38:47,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:47,636 INFO L225 Difference]: With dead ends: 1652 [2020-10-14 08:38:47,636 INFO L226 Difference]: Without dead ends: 1110 [2020-10-14 08:38:47,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:38:47,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2020-10-14 08:38:47,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1060. [2020-10-14 08:38:47,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2020-10-14 08:38:47,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1521 transitions. [2020-10-14 08:38:47,769 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1521 transitions. Word has length 80 [2020-10-14 08:38:47,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:47,769 INFO L479 AbstractCegarLoop]: Abstraction has 1060 states and 1521 transitions. [2020-10-14 08:38:47,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:38:47,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1521 transitions. [2020-10-14 08:38:47,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 08:38:47,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:47,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:47,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 08:38:47,771 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:47,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:47,771 INFO L82 PathProgramCache]: Analyzing trace with hash 400304541, now seen corresponding path program 1 times [2020-10-14 08:38:47,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:47,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180268603] [2020-10-14 08:38:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:47,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:47,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:47,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:47,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:47,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:48,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:48,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:48,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:48,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:49,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:49,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:51,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:51,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:52,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:52,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 08:38:52,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 08:38:52,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:38:52,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:52,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:52,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 08:38:52,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 08:38:52,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:52,980 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:38:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:52,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:52,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:52,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:52,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:52,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:38:52,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:52,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:52,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:53,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180268603] [2020-10-14 08:38:53,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:53,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:38:53,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871526833] [2020-10-14 08:38:53,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:38:53,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:53,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:38:53,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:38:53,007 INFO L87 Difference]: Start difference. First operand 1060 states and 1521 transitions. Second operand 4 states. [2020-10-14 08:38:53,180 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-14 08:38:53,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:53,809 INFO L93 Difference]: Finished difference Result 2872 states and 4147 transitions. [2020-10-14 08:38:53,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:38:53,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-14 08:38:53,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:53,818 INFO L225 Difference]: With dead ends: 2872 [2020-10-14 08:38:53,819 INFO L226 Difference]: Without dead ends: 1902 [2020-10-14 08:38:53,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:38:53,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2020-10-14 08:38:54,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1772. [2020-10-14 08:38:54,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1772 states. [2020-10-14 08:38:54,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2497 transitions. [2020-10-14 08:38:54,162 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2497 transitions. Word has length 81 [2020-10-14 08:38:54,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:54,162 INFO L479 AbstractCegarLoop]: Abstraction has 1772 states and 2497 transitions. [2020-10-14 08:38:54,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:38:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2497 transitions. [2020-10-14 08:38:54,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 08:38:54,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:54,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:54,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 08:38:54,165 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:54,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:54,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1441612655, now seen corresponding path program 1 times [2020-10-14 08:38:54,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:54,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316298975] [2020-10-14 08:38:54,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:54,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:54,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:54,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:54,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:54,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:54,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:54,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:54,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:55,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:56,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:56,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:59,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:59,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 08:38:59,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:38:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:38:59,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:59,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:38:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:38:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 08:38:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:59,363 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:38:59,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:59,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:59,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:59,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:59,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:59,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:38:59,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:59,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:38:59,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:59,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316298975] [2020-10-14 08:38:59,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:59,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:38:59,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461458539] [2020-10-14 08:38:59,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:38:59,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:59,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:38:59,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:38:59,401 INFO L87 Difference]: Start difference. First operand 1772 states and 2497 transitions. Second operand 6 states. [2020-10-14 08:38:59,590 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 08:39:00,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:00,427 INFO L93 Difference]: Finished difference Result 5150 states and 7286 transitions. [2020-10-14 08:39:00,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:39:00,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-14 08:39:00,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:00,438 INFO L225 Difference]: With dead ends: 5150 [2020-10-14 08:39:00,438 INFO L226 Difference]: Without dead ends: 3468 [2020-10-14 08:39:00,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:39:00,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2020-10-14 08:39:00,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3466. [2020-10-14 08:39:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3466 states. [2020-10-14 08:39:00,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 4852 transitions. [2020-10-14 08:39:00,986 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 4852 transitions. Word has length 82 [2020-10-14 08:39:00,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:00,989 INFO L479 AbstractCegarLoop]: Abstraction has 3466 states and 4852 transitions. [2020-10-14 08:39:00,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:39:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 4852 transitions. [2020-10-14 08:39:00,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 08:39:00,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:00,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:00,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 08:39:00,991 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:00,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:00,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1569697962, now seen corresponding path program 1 times [2020-10-14 08:39:00,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:00,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067690622] [2020-10-14 08:39:00,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:01,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:03,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:03,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 08:39:03,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:39:03,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2578 [2020-10-14 08:39:03,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:03,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 08:39:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 08:39:03,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:03,752 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:39:03,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:03,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:03,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:03,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:03,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:39:03,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:03,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:03,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067690622] [2020-10-14 08:39:03,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:03,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:39:03,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970376294] [2020-10-14 08:39:03,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:39:03,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:03,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:39:03,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:39:03,775 INFO L87 Difference]: Start difference. First operand 3466 states and 4852 transitions. Second operand 4 states. [2020-10-14 08:39:03,944 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:39:04,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:04,992 INFO L93 Difference]: Finished difference Result 8590 states and 12134 transitions. [2020-10-14 08:39:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:39:04,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-14 08:39:04,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:05,013 INFO L225 Difference]: With dead ends: 8590 [2020-10-14 08:39:05,013 INFO L226 Difference]: Without dead ends: 5260 [2020-10-14 08:39:05,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:39:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5260 states. [2020-10-14 08:39:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5260 to 5258. [2020-10-14 08:39:05,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5258 states. [2020-10-14 08:39:05,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 7300 transitions. [2020-10-14 08:39:05,728 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 7300 transitions. Word has length 82 [2020-10-14 08:39:05,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:05,728 INFO L479 AbstractCegarLoop]: Abstraction has 5258 states and 7300 transitions. [2020-10-14 08:39:05,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:39:05,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 7300 transitions. [2020-10-14 08:39:05,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 08:39:05,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:05,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:05,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 08:39:05,730 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:05,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:05,731 INFO L82 PathProgramCache]: Analyzing trace with hash 829957641, now seen corresponding path program 1 times [2020-10-14 08:39:05,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:05,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11529325] [2020-10-14 08:39:05,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:05,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:05,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:05,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:05,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:05,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:08,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:08,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:09,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:09,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 08:39:09,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:39:09,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4205 [2020-10-14 08:39:09,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:09,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 08:39:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 08:39:09,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:10,113 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:39:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:10,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:10,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:10,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:10,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:10,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:39:10,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:10,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:10,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:10,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11529325] [2020-10-14 08:39:10,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:10,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:39:10,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065439581] [2020-10-14 08:39:10,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:39:10,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:10,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:39:10,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:39:10,134 INFO L87 Difference]: Start difference. First operand 5258 states and 7300 transitions. Second operand 4 states. [2020-10-14 08:39:10,297 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-14 08:39:11,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:11,758 INFO L93 Difference]: Finished difference Result 13238 states and 18278 transitions. [2020-10-14 08:39:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:39:11,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-14 08:39:11,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:11,777 INFO L225 Difference]: With dead ends: 13238 [2020-10-14 08:39:11,777 INFO L226 Difference]: Without dead ends: 8116 [2020-10-14 08:39:11,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:39:11,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8116 states. [2020-10-14 08:39:12,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8116 to 8114. [2020-10-14 08:39:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8114 states. [2020-10-14 08:39:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8114 states to 8114 states and 10996 transitions. [2020-10-14 08:39:12,932 INFO L78 Accepts]: Start accepts. Automaton has 8114 states and 10996 transitions. Word has length 82 [2020-10-14 08:39:12,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:12,932 INFO L479 AbstractCegarLoop]: Abstraction has 8114 states and 10996 transitions. [2020-10-14 08:39:12,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:39:12,933 INFO L276 IsEmpty]: Start isEmpty. Operand 8114 states and 10996 transitions. [2020-10-14 08:39:12,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 08:39:12,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:12,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:12,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 08:39:12,934 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:12,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1356828958, now seen corresponding path program 1 times [2020-10-14 08:39:12,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:12,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445540336] [2020-10-14 08:39:12,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:12,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:12,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:13,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:13,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:13,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:15,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:15,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 08:39:15,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:39:15,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2337 [2020-10-14 08:39:15,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:15,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:15,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:39:15,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 08:39:15,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:39:15,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:15,486 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:39:15,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:15,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:15,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:15,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:15,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:15,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:39:15,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:15,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:15,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:15,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:15,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:15,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445540336] [2020-10-14 08:39:15,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:15,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:39:15,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526918056] [2020-10-14 08:39:15,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:39:15,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:15,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:39:15,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:39:15,507 INFO L87 Difference]: Start difference. First operand 8114 states and 10996 transitions. Second operand 6 states. [2020-10-14 08:39:17,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:17,953 INFO L93 Difference]: Finished difference Result 13524 states and 18105 transitions. [2020-10-14 08:39:17,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:39:17,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-10-14 08:39:17,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:17,983 INFO L225 Difference]: With dead ends: 13524 [2020-10-14 08:39:17,983 INFO L226 Difference]: Without dead ends: 13522 [2020-10-14 08:39:17,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:18,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13522 states. [2020-10-14 08:39:19,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13522 to 8498. [2020-10-14 08:39:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8498 states. [2020-10-14 08:39:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8498 states to 8498 states and 11316 transitions. [2020-10-14 08:39:19,600 INFO L78 Accepts]: Start accepts. Automaton has 8498 states and 11316 transitions. Word has length 83 [2020-10-14 08:39:19,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:19,601 INFO L479 AbstractCegarLoop]: Abstraction has 8498 states and 11316 transitions. [2020-10-14 08:39:19,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:39:19,601 INFO L276 IsEmpty]: Start isEmpty. Operand 8498 states and 11316 transitions. [2020-10-14 08:39:19,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 08:39:19,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:19,606 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:19,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 08:39:19,606 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:19,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:19,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1784938361, now seen corresponding path program 1 times [2020-10-14 08:39:19,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:19,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163779812] [2020-10-14 08:39:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:19,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:19,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:19,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:19,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:20,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:20,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:20,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:20,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:20,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:20,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:21,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:24,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:24,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 08:39:24,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:39:24,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:39:24,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:24,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:39:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:39:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 08:39:24,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:24,815 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:39:24,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:24,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:24,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:24,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:24,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:39:24,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:24,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:24,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:24,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:24,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:24,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 08:39:24,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163779812] [2020-10-14 08:39:24,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:39:24,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:39:24,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482644696] [2020-10-14 08:39:24,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:39:24,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:24,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:39:24,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:39:24,844 INFO L87 Difference]: Start difference. First operand 8498 states and 11316 transitions. Second operand 6 states. [2020-10-14 08:39:25,041 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 08:39:27,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:27,275 INFO L93 Difference]: Finished difference Result 20320 states and 27127 transitions. [2020-10-14 08:39:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:39:27,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-14 08:39:27,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:27,295 INFO L225 Difference]: With dead ends: 20320 [2020-10-14 08:39:27,295 INFO L226 Difference]: Without dead ends: 11958 [2020-10-14 08:39:27,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:27,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11958 states. [2020-10-14 08:39:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11958 to 11498. [2020-10-14 08:39:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11498 states. [2020-10-14 08:39:29,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11498 states to 11498 states and 15316 transitions. [2020-10-14 08:39:29,288 INFO L78 Accepts]: Start accepts. Automaton has 11498 states and 15316 transitions. Word has length 104 [2020-10-14 08:39:29,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:29,289 INFO L479 AbstractCegarLoop]: Abstraction has 11498 states and 15316 transitions. [2020-10-14 08:39:29,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:39:29,289 INFO L276 IsEmpty]: Start isEmpty. Operand 11498 states and 15316 transitions. [2020-10-14 08:39:29,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 08:39:29,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:29,295 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:29,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 08:39:29,295 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:29,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:29,296 INFO L82 PathProgramCache]: Analyzing trace with hash 505270259, now seen corresponding path program 1 times [2020-10-14 08:39:29,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:29,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381398096] [2020-10-14 08:39:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:29,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:29,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:29,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:29,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:29,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:29,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:29,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:30,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:30,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:31,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:31,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:33,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:33,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:33,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:33,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:34,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:34,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 08:39:34,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:39:34,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:39:34,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:34,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:39:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 08:39:34,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:34,584 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:39:34,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:34,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:34,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:34,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:34,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:34,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:39:34,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:34,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:34,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:34,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:34,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 08:39:34,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381398096] [2020-10-14 08:39:34,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:34,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:39:34,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034951806] [2020-10-14 08:39:34,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:39:34,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:34,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:39:34,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:39:34,614 INFO L87 Difference]: Start difference. First operand 11498 states and 15316 transitions. Second operand 10 states. [2020-10-14 08:39:34,839 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-14 08:39:44,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:44,868 INFO L93 Difference]: Finished difference Result 56348 states and 74386 transitions. [2020-10-14 08:39:44,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 08:39:44,869 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-14 08:39:44,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:44,917 INFO L225 Difference]: With dead ends: 56348 [2020-10-14 08:39:44,917 INFO L226 Difference]: Without dead ends: 44955 [2020-10-14 08:39:44,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2020-10-14 08:39:44,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44955 states. [2020-10-14 08:39:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44955 to 25446. [2020-10-14 08:39:50,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25446 states. [2020-10-14 08:39:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25446 states to 25446 states and 33494 transitions. [2020-10-14 08:39:50,401 INFO L78 Accepts]: Start accepts. Automaton has 25446 states and 33494 transitions. Word has length 104 [2020-10-14 08:39:50,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:50,402 INFO L479 AbstractCegarLoop]: Abstraction has 25446 states and 33494 transitions. [2020-10-14 08:39:50,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:39:50,402 INFO L276 IsEmpty]: Start isEmpty. Operand 25446 states and 33494 transitions. [2020-10-14 08:39:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 08:39:50,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:50,411 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:50,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 08:39:50,412 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:50,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:50,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1236535533, now seen corresponding path program 1 times [2020-10-14 08:39:50,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:50,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634648055] [2020-10-14 08:39:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:50,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:50,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:50,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:50,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:50,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:50,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:50,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:51,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:53,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:53,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:53,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:54,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:54,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:54,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:54,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:54,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:54,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:55,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:55,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:55,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 08:39:55,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 08:39:55,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:39:55,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:55,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:55,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:39:55,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:39:55,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 08:39:55,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:55,623 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:39:55,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:55,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:55,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:55,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:55,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:39:55,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:55,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:55,653 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 08:39:55,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634648055] [2020-10-14 08:39:55,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:39:55,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:39:55,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299204726] [2020-10-14 08:39:55,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:39:55,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:55,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:39:55,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:39:55,655 INFO L87 Difference]: Start difference. First operand 25446 states and 33494 transitions. Second operand 6 states. [2020-10-14 08:39:55,847 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 08:40:06,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:06,108 INFO L93 Difference]: Finished difference Result 83636 states and 110143 transitions. [2020-10-14 08:40:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:40:06,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-14 08:40:06,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:06,175 INFO L225 Difference]: With dead ends: 83636 [2020-10-14 08:40:06,175 INFO L226 Difference]: Without dead ends: 58338 [2020-10-14 08:40:06,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:40:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58338 states. [2020-10-14 08:40:15,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58338 to 45642. [2020-10-14 08:40:15,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45642 states. [2020-10-14 08:40:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45642 states to 45642 states and 59900 transitions. [2020-10-14 08:40:15,891 INFO L78 Accepts]: Start accepts. Automaton has 45642 states and 59900 transitions. Word has length 104 [2020-10-14 08:40:15,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:15,891 INFO L479 AbstractCegarLoop]: Abstraction has 45642 states and 59900 transitions. [2020-10-14 08:40:15,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:40:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 45642 states and 59900 transitions. [2020-10-14 08:40:15,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 08:40:15,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:15,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:15,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 08:40:15,902 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:15,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:15,902 INFO L82 PathProgramCache]: Analyzing trace with hash -2024432464, now seen corresponding path program 1 times [2020-10-14 08:40:15,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:15,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980703411] [2020-10-14 08:40:15,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:15,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:16,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:16,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:16,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:16,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:16,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:17,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:18,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:20,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:20,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 08:40:20,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:40:20,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:40:20,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:20,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:40:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:40:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 08:40:20,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:21,288 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:40:21,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:21,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:21,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:21,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:21,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:40:21,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:21,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:21,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:21,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980703411] [2020-10-14 08:40:21,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:40:21,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 08:40:21,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798890610] [2020-10-14 08:40:21,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:40:21,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:21,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:40:21,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:40:21,327 INFO L87 Difference]: Start difference. First operand 45642 states and 59900 transitions. Second operand 9 states. [2020-10-14 08:40:21,548 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 08:40:42,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:42,697 INFO L93 Difference]: Finished difference Result 146189 states and 189611 transitions. [2020-10-14 08:40:42,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 08:40:42,697 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-10-14 08:40:42,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:42,816 INFO L225 Difference]: With dead ends: 146189 [2020-10-14 08:40:42,816 INFO L226 Difference]: Without dead ends: 100695 [2020-10-14 08:40:42,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-10-14 08:40:42,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100695 states.