/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.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:49:22,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:49:22,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:49:22,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:49:22,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:49:22,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:49:22,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:49:22,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:49:22,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:49:22,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:49:22,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:49:22,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:49:22,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:49:22,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:49:22,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:49:22,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:49:22,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:49:22,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:49:22,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:49:22,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:49:22,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:49:22,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:49:22,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:49:22,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:49:22,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:49:22,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:49:22,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:49:22,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:49:22,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:49:22,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:49:22,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:49:22,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:49:22,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:49:22,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:49:22,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:49:22,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:49:22,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:49:22,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:49:22,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:49:22,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:49:22,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:49:22,425 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 08:49:22,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:49:22,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:49:22,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:49:22,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:49:22,474 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:49:22,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:49:22,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:49:22,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:49:22,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:49:22,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:49:22,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:49:22,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:49:22,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:49:22,478 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:49:22,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:49:22,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:49:22,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:49:22,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:49:22,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:49:22,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:49:22,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:49:22,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:49:22,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:49:22,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:49:22,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:49:22,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:49:22,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:49:22,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:49:22,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:49:22,481 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 08:49:22,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:49:22,852 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:49:22,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:49:22,860 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:49:22,860 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:49:22,861 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 08:49:22,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8c498013/edbcba0b7a264a5197606a69f662cb32/FLAGbdd255671 [2020-10-14 08:49:23,429 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:49:23,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 08:49:23,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8c498013/edbcba0b7a264a5197606a69f662cb32/FLAGbdd255671 [2020-10-14 08:49:23,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8c498013/edbcba0b7a264a5197606a69f662cb32 [2020-10-14 08:49:23,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:49:23,778 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:49:23,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:49:23,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:49:23,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:49:23,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:49:23" (1/1) ... [2020-10-14 08:49:23,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d507481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:49:23, skipping insertion in model container [2020-10-14 08:49:23,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:49:23" (1/1) ... [2020-10-14 08:49:23,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:49:23,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:49:24,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:49:24,285 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:49:24,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:49:24,403 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:49:24,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:49:24 WrapperNode [2020-10-14 08:49:24,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:49:24,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:49:24,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:49:24,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:49:24,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:49:24" (1/1) ... [2020-10-14 08:49:24,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:49:24" (1/1) ... [2020-10-14 08:49:24,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:49:24" (1/1) ... [2020-10-14 08:49:24,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:49:24" (1/1) ... [2020-10-14 08:49:24,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:49:24" (1/1) ... [2020-10-14 08:49:24,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:49:24" (1/1) ... [2020-10-14 08:49:24,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:49:24" (1/1) ... [2020-10-14 08:49:24,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:49:24,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:49:24,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:49:24,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:49:24,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:49:24" (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 08:49:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:49:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:49:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:49:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:49:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:49:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:49:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:49:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:49:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:49:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:49:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:49:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:49:24,549 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:49:24,549 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:49:24,549 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:49:24,549 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:49:24,549 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:49:24,549 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:49:24,550 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:49:24,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:49:24,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:49:24,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:49:25,305 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:49:25,305 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:49:25,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:49:25 BoogieIcfgContainer [2020-10-14 08:49:25,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:49:25,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:49:25,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:49:25,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:49:25,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:49:23" (1/3) ... [2020-10-14 08:49:25,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f65dcbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:49:25, skipping insertion in model container [2020-10-14 08:49:25,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:49:24" (2/3) ... [2020-10-14 08:49:25,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f65dcbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:49:25, skipping insertion in model container [2020-10-14 08:49:25,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:49:25" (3/3) ... [2020-10-14 08:49:25,321 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 08:49:25,334 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:49:25,343 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:49:25,359 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:49:25,392 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:49:25,392 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:49:25,393 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:49:25,393 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:49:25,393 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:49:25,393 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:49:25,394 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:49:25,394 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:49:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-10-14 08:49:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 08:49:25,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:49:25,431 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 08:49:25,431 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:49:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:49:25,439 INFO L82 PathProgramCache]: Analyzing trace with hash 289215473, now seen corresponding path program 1 times [2020-10-14 08:49:25,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:49:25,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88962584] [2020-10-14 08:49:25,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:49:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:25,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:26,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:26,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:26,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:26,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:26,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:27,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:27,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:30,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:30,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 08:49:30,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:49:30,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:49:30,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:30,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:30,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:49:30,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:49:30,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 08:49:30,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 08:49:31,123 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:49:31,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:49:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:31,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:31,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:31,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:49:31,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:49:31,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 08:49:31,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:31,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:49:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:49:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:49:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:49:31,220 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 08:49:31,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88962584] [2020-10-14 08:49:31,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:49:31,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:49:31,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515532871] [2020-10-14 08:49:31,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:49:31,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:49:31,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:49:31,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:49:31,257 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 6 states. [2020-10-14 08:49:31,522 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 08:49:32,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:49:32,418 INFO L93 Difference]: Finished difference Result 321 states and 527 transitions. [2020-10-14 08:49:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:49:32,420 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-14 08:49:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:49:32,436 INFO L225 Difference]: With dead ends: 321 [2020-10-14 08:49:32,436 INFO L226 Difference]: Without dead ends: 212 [2020-10-14 08:49:32,440 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 08:49:32,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-14 08:49:32,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2020-10-14 08:49:32,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-14 08:49:32,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 298 transitions. [2020-10-14 08:49:32,510 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 298 transitions. Word has length 80 [2020-10-14 08:49:32,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:49:32,511 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 298 transitions. [2020-10-14 08:49:32,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:49:32,511 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 298 transitions. [2020-10-14 08:49:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 08:49:32,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:49:32,515 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 08:49:32,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:49:32,516 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:49:32,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:49:32,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1221722817, now seen corresponding path program 1 times [2020-10-14 08:49:32,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:49:32,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735601516] [2020-10-14 08:49:32,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:49:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:32,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:32,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:32,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:32,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:32,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:33,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:33,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:34,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:35,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:35,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:35,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:37,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:37,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 08:49:37,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:49:37,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:49:37,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:37,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:37,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:49:37,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:49:37,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:49:37,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:49:37,784 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:49:37,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:49:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:37,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:37,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:37,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:49:37,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:49:37,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:49:37,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:37,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:49:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:49:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:49:37,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:49:37,841 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 08:49:37,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735601516] [2020-10-14 08:49:37,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:49:37,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:49:37,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60604256] [2020-10-14 08:49:37,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:49:37,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:49:37,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:49:37,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:49:37,845 INFO L87 Difference]: Start difference. First operand 210 states and 298 transitions. Second operand 6 states. [2020-10-14 08:49:38,028 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 08:49:38,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:49:38,747 INFO L93 Difference]: Finished difference Result 490 states and 732 transitions. [2020-10-14 08:49:38,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:49:38,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-10-14 08:49:38,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:49:38,754 INFO L225 Difference]: With dead ends: 490 [2020-10-14 08:49:38,759 INFO L226 Difference]: Without dead ends: 334 [2020-10-14 08:49:38,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:49:38,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-14 08:49:38,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 332. [2020-10-14 08:49:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-14 08:49:38,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 488 transitions. [2020-10-14 08:49:38,822 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 488 transitions. Word has length 81 [2020-10-14 08:49:38,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:49:38,825 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 488 transitions. [2020-10-14 08:49:38,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:49:38,825 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 488 transitions. [2020-10-14 08:49:38,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 08:49:38,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:49:38,830 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 08:49:38,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:49:38,831 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:49:38,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:49:38,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1820350400, now seen corresponding path program 1 times [2020-10-14 08:49:38,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:49:38,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041094016] [2020-10-14 08:49:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:49:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:38,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:38,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:38,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:39,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:39,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:39,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:39,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:40,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:43,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:43,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 08:49:43,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:49:43,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:49:43,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:43,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:43,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:49:43,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:49:43,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 08:49:43,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:49:44,153 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:49:44,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:49:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:44,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:44,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:44,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:49:44,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:49:44,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 08:49:44,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:44,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:49:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:49:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:49:44,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:49:44,215 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 08:49:44,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041094016] [2020-10-14 08:49:44,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:49:44,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:49:44,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654949170] [2020-10-14 08:49:44,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:49:44,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:49:44,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:49:44,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:49:44,219 INFO L87 Difference]: Start difference. First operand 332 states and 488 transitions. Second operand 6 states. [2020-10-14 08:49:44,468 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 08:49:45,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:49:45,084 INFO L93 Difference]: Finished difference Result 863 states and 1312 transitions. [2020-10-14 08:49:45,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:49:45,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-14 08:49:45,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:49:45,088 INFO L225 Difference]: With dead ends: 863 [2020-10-14 08:49:45,088 INFO L226 Difference]: Without dead ends: 581 [2020-10-14 08:49:45,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:49:45,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-14 08:49:45,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 579. [2020-10-14 08:49:45,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-14 08:49:45,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 871 transitions. [2020-10-14 08:49:45,125 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 871 transitions. Word has length 82 [2020-10-14 08:49:45,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:49:45,126 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 871 transitions. [2020-10-14 08:49:45,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:49:45,126 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 871 transitions. [2020-10-14 08:49:45,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 08:49:45,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:49:45,128 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 08:49:45,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:49:45,128 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:49:45,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:49:45,129 INFO L82 PathProgramCache]: Analyzing trace with hash 912674032, now seen corresponding path program 1 times [2020-10-14 08:49:45,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:49:45,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599491372] [2020-10-14 08:49:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:49:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:45,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:45,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:45,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:45,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:45,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:46,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:46,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:46,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:47,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:47,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:47,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:47,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:50,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:50,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 08:49:50,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:49:50,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:49:50,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:50,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:49:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:49:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 08:49:50,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:49:50,397 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:49:50,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:49:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:50,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:50,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:50,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:49:50,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:49:50,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 08:49:50,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:50,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:49:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:49:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:49:50,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:49:50,474 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 08:49:50,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599491372] [2020-10-14 08:49:50,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:49:50,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:49:50,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805242583] [2020-10-14 08:49:50,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:49:50,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:49:50,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:49:50,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:49:50,479 INFO L87 Difference]: Start difference. First operand 579 states and 871 transitions. Second operand 6 states. [2020-10-14 08:49:50,738 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 08:49:51,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:49:51,496 INFO L93 Difference]: Finished difference Result 1609 states and 2467 transitions. [2020-10-14 08:49:51,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:49:51,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-10-14 08:49:51,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:49:51,505 INFO L225 Difference]: With dead ends: 1609 [2020-10-14 08:49:51,506 INFO L226 Difference]: Without dead ends: 1076 [2020-10-14 08:49:51,507 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 08:49:51,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-10-14 08:49:51,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1074. [2020-10-14 08:49:51,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-10-14 08:49:51,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1634 transitions. [2020-10-14 08:49:51,579 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1634 transitions. Word has length 83 [2020-10-14 08:49:51,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:49:51,580 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1634 transitions. [2020-10-14 08:49:51,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:49:51,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1634 transitions. [2020-10-14 08:49:51,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 08:49:51,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:49:51,587 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, 1] [2020-10-14 08:49:51,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:49:51,587 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:49:51,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:49:51,588 INFO L82 PathProgramCache]: Analyzing trace with hash -391972721, now seen corresponding path program 1 times [2020-10-14 08:49:51,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:49:51,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897915385] [2020-10-14 08:49:51,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:49:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:51,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:51,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:52,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:52,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:52,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:52,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:52,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:53,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:53,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:53,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:56,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:56,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 08:49:56,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:49:56,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:49:56,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:56,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:49:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:49:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:49:56,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:49:56,872 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:49:56,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:49:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:56,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:56,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:56,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:49:56,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:49:56,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 08:49:56,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:56,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:49:56,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:49:56,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:49:56,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 08:49:56,938 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 08:49:56,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897915385] [2020-10-14 08:49:56,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:49:56,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:49:56,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480375003] [2020-10-14 08:49:56,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:49:56,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:49:56,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:49:56,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:49:56,943 INFO L87 Difference]: Start difference. First operand 1074 states and 1634 transitions. Second operand 6 states. [2020-10-14 08:49:57,187 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-14 08:49:57,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:49:57,793 INFO L93 Difference]: Finished difference Result 2106 states and 3225 transitions. [2020-10-14 08:49:57,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:49:57,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-10-14 08:49:57,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:49:57,800 INFO L225 Difference]: With dead ends: 2106 [2020-10-14 08:49:57,800 INFO L226 Difference]: Without dead ends: 1074 [2020-10-14 08:49:57,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:49:57,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2020-10-14 08:49:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1074. [2020-10-14 08:49:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-10-14 08:49:57,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1617 transitions. [2020-10-14 08:49:57,885 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1617 transitions. Word has length 84 [2020-10-14 08:49:57,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:49:57,885 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1617 transitions. [2020-10-14 08:49:57,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:49:57,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1617 transitions. [2020-10-14 08:49:57,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 08:49:57,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:49:57,892 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, 1, 1] [2020-10-14 08:49:57,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:49:57,893 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:49:57,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:49:57,893 INFO L82 PathProgramCache]: Analyzing trace with hash 246274847, now seen corresponding path program 1 times [2020-10-14 08:49:57,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:49:57,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508002159] [2020-10-14 08:49:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:49:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:57,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:57,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:58,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:58,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:58,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:58,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:59,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:59,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:00,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:01,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:02,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:02,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:02,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 08:50:02,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:50:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:50:02,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:02,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:50:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-14 08:50:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 08:50:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:03,068 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:50:03,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:50:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:03,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:03,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:03,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:50:03,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:50:03,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:50:03,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:03,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:03,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:50:03,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:50:03,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:50:03,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:50:03,102 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 08:50:03,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508002159] [2020-10-14 08:50:03,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:50:03,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:50:03,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856384544] [2020-10-14 08:50:03,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:50:03,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:50:03,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:50:03,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:50:03,106 INFO L87 Difference]: Start difference. First operand 1074 states and 1617 transitions. Second operand 4 states. [2020-10-14 08:50:03,257 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:50:04,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:50:04,068 INFO L93 Difference]: Finished difference Result 2929 states and 4443 transitions. [2020-10-14 08:50:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:50:04,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-10-14 08:50:04,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:50:04,081 INFO L225 Difference]: With dead ends: 2929 [2020-10-14 08:50:04,082 INFO L226 Difference]: Without dead ends: 2015 [2020-10-14 08:50:04,085 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 08:50:04,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2020-10-14 08:50:04,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 2013. [2020-10-14 08:50:04,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2013 states. [2020-10-14 08:50:04,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 3017 transitions. [2020-10-14 08:50:04,202 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 3017 transitions. Word has length 85 [2020-10-14 08:50:04,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:50:04,202 INFO L479 AbstractCegarLoop]: Abstraction has 2013 states and 3017 transitions. [2020-10-14 08:50:04,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:50:04,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 3017 transitions. [2020-10-14 08:50:04,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 08:50:04,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:50:04,205 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, 1, 1, 1, 1] [2020-10-14 08:50:04,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:50:04,205 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:50:04,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:50:04,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1483687590, now seen corresponding path program 1 times [2020-10-14 08:50:04,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:50:04,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375419410] [2020-10-14 08:50:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:50:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:04,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:04,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:04,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:04,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:04,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:04,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:05,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:05,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:05,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:06,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:06,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:06,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:07,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:07,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:07,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:09,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:09,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 08:50:09,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:50:09,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:50:09,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:09,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:09,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:50:09,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:50:09,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 08:50:09,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:09,408 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:50:09,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:50:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:09,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:09,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:50:09,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:50:09,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:50:09,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:09,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:09,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:50:09,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:50:09,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:50:09,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:09,440 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 08:50:09,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375419410] [2020-10-14 08:50:09,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:50:09,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:50:09,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875395444] [2020-10-14 08:50:09,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:50:09,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:50:09,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:50:09,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:50:09,443 INFO L87 Difference]: Start difference. First operand 2013 states and 3017 transitions. Second operand 6 states. [2020-10-14 08:50:09,623 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 08:50:10,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:50:10,619 INFO L93 Difference]: Finished difference Result 5433 states and 8195 transitions. [2020-10-14 08:50:10,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:50:10,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-14 08:50:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:50:10,647 INFO L225 Difference]: With dead ends: 5433 [2020-10-14 08:50:10,647 INFO L226 Difference]: Without dead ends: 3671 [2020-10-14 08:50:10,658 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 08:50:10,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2020-10-14 08:50:10,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 2904. [2020-10-14 08:50:10,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2904 states. [2020-10-14 08:50:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 4376 transitions. [2020-10-14 08:50:10,968 INFO L78 Accepts]: Start accepts. Automaton has 2904 states and 4376 transitions. Word has length 87 [2020-10-14 08:50:10,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:50:10,969 INFO L479 AbstractCegarLoop]: Abstraction has 2904 states and 4376 transitions. [2020-10-14 08:50:10,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:50:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2904 states and 4376 transitions. [2020-10-14 08:50:10,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 08:50:10,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:50:10,972 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, 1, 1, 1, 1] [2020-10-14 08:50:10,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:50:10,972 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:50:10,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:50:10,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1884842097, now seen corresponding path program 1 times [2020-10-14 08:50:10,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:50:10,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437156875] [2020-10-14 08:50:10,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:50:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:11,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:11,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:11,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:11,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:11,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:11,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:11,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:12,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:12,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:12,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:13,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:13,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:13,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:15,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:15,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:16,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:16,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 08:50:16,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:50:16,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:50:16,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:16,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:50:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 08:50:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 08:50:16,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:16,165 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:50:16,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:50:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:16,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:16,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:16,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:50:16,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:50:16,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:50:16,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:16,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:50:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:50:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:50:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:50:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:50:16,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437156875] [2020-10-14 08:50:16,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:50:16,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:50:16,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860694370] [2020-10-14 08:50:16,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:50:16,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:50:16,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:50:16,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:50:16,195 INFO L87 Difference]: Start difference. First operand 2904 states and 4376 transitions. Second operand 6 states. [2020-10-14 08:50:16,370 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 08:50:17,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:50:17,377 INFO L93 Difference]: Finished difference Result 8732 states and 13195 transitions. [2020-10-14 08:50:17,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:50:17,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-14 08:50:17,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:50:17,410 INFO L225 Difference]: With dead ends: 8732 [2020-10-14 08:50:17,411 INFO L226 Difference]: Without dead ends: 6058 [2020-10-14 08:50:17,417 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 08:50:17,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6058 states. [2020-10-14 08:50:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6058 to 4862. [2020-10-14 08:50:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4862 states. [2020-10-14 08:50:17,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4862 states to 4862 states and 7360 transitions. [2020-10-14 08:50:17,741 INFO L78 Accepts]: Start accepts. Automaton has 4862 states and 7360 transitions. Word has length 87 [2020-10-14 08:50:17,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:50:17,742 INFO L479 AbstractCegarLoop]: Abstraction has 4862 states and 7360 transitions. [2020-10-14 08:50:17,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:50:17,742 INFO L276 IsEmpty]: Start isEmpty. Operand 4862 states and 7360 transitions. [2020-10-14 08:50:17,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 08:50:17,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:50:17,744 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, 1, 1, 1, 1] [2020-10-14 08:50:17,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:50:17,745 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:50:17,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:50:17,745 INFO L82 PathProgramCache]: Analyzing trace with hash 484248869, now seen corresponding path program 1 times [2020-10-14 08:50:17,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:50:17,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825537922] [2020-10-14 08:50:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:50:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:17,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:17,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:17,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:18,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:18,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:18,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:18,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:18,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:18,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:21,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:22,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:22,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 08:50:22,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:50:22,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:50:22,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:22,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:50:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:50:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 08:50:22,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:22,954 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:50:22,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:50:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:22,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:22,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:22,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:50:22,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:50:22,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:50:22,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:22,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:50:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:50:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:50:22,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:50:22,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825537922] [2020-10-14 08:50:22,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:50:22,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:50:22,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266637992] [2020-10-14 08:50:22,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:50:22,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:50:22,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:50:22,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:50:22,985 INFO L87 Difference]: Start difference. First operand 4862 states and 7360 transitions. Second operand 6 states. [2020-10-14 08:50:23,171 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 08:50:23,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:50:23,997 INFO L93 Difference]: Finished difference Result 11712 states and 17707 transitions. [2020-10-14 08:50:23,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:50:23,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-14 08:50:23,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:50:24,032 INFO L225 Difference]: With dead ends: 11712 [2020-10-14 08:50:24,033 INFO L226 Difference]: Without dead ends: 7214 [2020-10-14 08:50:24,044 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 08:50:24,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7214 states. [2020-10-14 08:50:24,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7214 to 5802. [2020-10-14 08:50:24,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5802 states. [2020-10-14 08:50:24,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 8792 transitions. [2020-10-14 08:50:24,406 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 8792 transitions. Word has length 87 [2020-10-14 08:50:24,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:50:24,406 INFO L479 AbstractCegarLoop]: Abstraction has 5802 states and 8792 transitions. [2020-10-14 08:50:24,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:50:24,406 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 8792 transitions. [2020-10-14 08:50:24,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 08:50:24,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:50:24,409 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, 1, 1, 1, 1] [2020-10-14 08:50:24,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:50:24,409 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:50:24,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:50:24,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1500358757, now seen corresponding path program 1 times [2020-10-14 08:50:24,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:50:24,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959038291] [2020-10-14 08:50:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:50:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:24,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:24,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:24,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:24,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:24,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:26,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:26,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:26,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:26,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:26,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:27,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:28,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:29,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:29,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:29,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 08:50:29,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:50:29,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:50:29,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:29,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:50:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 08:50:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 08:50:29,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:29,599 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:50:29,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:50:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:29,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:29,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:29,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:50:29,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:50:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:50:29,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:29,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:50:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:50:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:50:29,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:50:29,632 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 08:50:29,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959038291] [2020-10-14 08:50:29,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:50:29,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:50:29,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671189204] [2020-10-14 08:50:29,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:50:29,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:50:29,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:50:29,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:50:29,637 INFO L87 Difference]: Start difference. First operand 5802 states and 8792 transitions. Second operand 4 states. [2020-10-14 08:50:29,779 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:50:30,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:50:30,474 INFO L93 Difference]: Finished difference Result 12126 states and 18426 transitions. [2020-10-14 08:50:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:50:30,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-14 08:50:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:50:30,503 INFO L225 Difference]: With dead ends: 12126 [2020-10-14 08:50:30,503 INFO L226 Difference]: Without dead ends: 6716 [2020-10-14 08:50:30,515 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 08:50:30,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2020-10-14 08:50:30,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 6714. [2020-10-14 08:50:30,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6714 states. [2020-10-14 08:50:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6714 states to 6714 states and 10152 transitions. [2020-10-14 08:50:30,939 INFO L78 Accepts]: Start accepts. Automaton has 6714 states and 10152 transitions. Word has length 87 [2020-10-14 08:50:30,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:50:30,940 INFO L479 AbstractCegarLoop]: Abstraction has 6714 states and 10152 transitions. [2020-10-14 08:50:30,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:50:30,940 INFO L276 IsEmpty]: Start isEmpty. Operand 6714 states and 10152 transitions. [2020-10-14 08:50:30,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 08:50:30,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:50:30,945 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, 1, 1, 1, 1] [2020-10-14 08:50:30,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:50:30,946 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:50:30,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:50:30,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1705350628, now seen corresponding path program 1 times [2020-10-14 08:50:30,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:50:30,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62678435] [2020-10-14 08:50:30,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:50:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:30,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:31,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:31,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:31,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:32,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:32,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:33,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:33,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:33,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:35,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:35,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:35,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:35,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 08:50:35,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:50:35,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:50:35,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:35,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:35,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:50:35,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 08:50:35,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:50:35,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:36,115 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:50:36,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:50:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:36,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:36,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:36,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:50:36,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:50:36,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:50:36,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:36,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:36,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:50:36,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:50:36,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:50:36,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:36,134 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 08:50:36,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62678435] [2020-10-14 08:50:36,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:50:36,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:50:36,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685503109] [2020-10-14 08:50:36,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:50:36,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:50:36,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:50:36,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:50:36,136 INFO L87 Difference]: Start difference. First operand 6714 states and 10152 transitions. Second operand 4 states. [2020-10-14 08:50:37,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:50:37,224 INFO L93 Difference]: Finished difference Result 18638 states and 28058 transitions. [2020-10-14 08:50:37,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:50:37,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-14 08:50:37,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:50:37,251 INFO L225 Difference]: With dead ends: 18638 [2020-10-14 08:50:37,251 INFO L226 Difference]: Without dead ends: 12316 [2020-10-14 08:50:37,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:50:37,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12316 states. [2020-10-14 08:50:37,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12316 to 12314. [2020-10-14 08:50:37,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12314 states. [2020-10-14 08:50:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12314 states to 12314 states and 18264 transitions. [2020-10-14 08:50:37,757 INFO L78 Accepts]: Start accepts. Automaton has 12314 states and 18264 transitions. Word has length 87 [2020-10-14 08:50:37,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:50:37,758 INFO L479 AbstractCegarLoop]: Abstraction has 12314 states and 18264 transitions. [2020-10-14 08:50:37,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:50:37,758 INFO L276 IsEmpty]: Start isEmpty. Operand 12314 states and 18264 transitions. [2020-10-14 08:50:37,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 08:50:37,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:50:37,761 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, 1, 1, 1, 1] [2020-10-14 08:50:37,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:50:37,762 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:50:37,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:50:37,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1975286226, now seen corresponding path program 1 times [2020-10-14 08:50:37,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:50:37,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847980457] [2020-10-14 08:50:37,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:50:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:37,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:38,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:38,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:38,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:38,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:38,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:38,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:39,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:39,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:39,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:40,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:42,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:42,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 08:50:42,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:50:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:50:42,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:42,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:50:42,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 08:50:42,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:50:42,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:42,956 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:50:42,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:50:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:42,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:42,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:42,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:50:42,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:50:42,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:50:42,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:42,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:50:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:50:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:50:42,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:42,980 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 08:50:42,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847980457] [2020-10-14 08:50:42,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:50:42,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:50:42,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030918595] [2020-10-14 08:50:42,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:50:42,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:50:42,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:50:42,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:50:42,982 INFO L87 Difference]: Start difference. First operand 12314 states and 18264 transitions. Second operand 6 states. [2020-10-14 08:50:43,167 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 08:50:44,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:50:44,540 INFO L93 Difference]: Finished difference Result 28232 states and 41795 transitions. [2020-10-14 08:50:44,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:50:44,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-14 08:50:44,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:50:44,575 INFO L225 Difference]: With dead ends: 28232 [2020-10-14 08:50:44,575 INFO L226 Difference]: Without dead ends: 16310 [2020-10-14 08:50:44,601 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 08:50:44,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16310 states. [2020-10-14 08:50:45,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16310 to 14034. [2020-10-14 08:50:45,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14034 states. [2020-10-14 08:50:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14034 states to 14034 states and 20816 transitions. [2020-10-14 08:50:45,226 INFO L78 Accepts]: Start accepts. Automaton has 14034 states and 20816 transitions. Word has length 87 [2020-10-14 08:50:45,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:50:45,227 INFO L479 AbstractCegarLoop]: Abstraction has 14034 states and 20816 transitions. [2020-10-14 08:50:45,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:50:45,227 INFO L276 IsEmpty]: Start isEmpty. Operand 14034 states and 20816 transitions. [2020-10-14 08:50:45,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 08:50:45,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:50:45,230 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, 1, 1, 1, 1] [2020-10-14 08:50:45,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:50:45,230 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:50:45,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:50:45,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1758674876, now seen corresponding path program 1 times [2020-10-14 08:50:45,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:50:45,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71519652] [2020-10-14 08:50:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:50:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:45,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:45,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:45,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:45,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:45,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:45,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:45,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:49,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:50,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:50,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 08:50:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:50:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:50:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:50,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:50:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:50:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 08:50:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:50,409 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:50:50,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:50:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:50,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:50,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:50,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:50:50,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:50:50,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:50:50,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:50,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:50,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:50:50,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:50:50,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:50:50,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:50,431 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 08:50:50,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71519652] [2020-10-14 08:50:50,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:50:50,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:50:50,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534412244] [2020-10-14 08:50:50,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:50:50,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:50:50,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:50:50,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:50:50,433 INFO L87 Difference]: Start difference. First operand 14034 states and 20816 transitions. Second operand 6 states. [2020-10-14 08:50:50,614 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 08:50:51,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:50:51,900 INFO L93 Difference]: Finished difference Result 32430 states and 47995 transitions. [2020-10-14 08:50:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:50:51,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-14 08:50:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:50:51,926 INFO L225 Difference]: With dead ends: 32430 [2020-10-14 08:50:51,926 INFO L226 Difference]: Without dead ends: 18796 [2020-10-14 08:50:51,952 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 08:50:51,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18796 states. [2020-10-14 08:50:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18796 to 15784. [2020-10-14 08:50:52,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15784 states. [2020-10-14 08:50:52,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15784 states to 15784 states and 23416 transitions. [2020-10-14 08:50:52,663 INFO L78 Accepts]: Start accepts. Automaton has 15784 states and 23416 transitions. Word has length 87 [2020-10-14 08:50:52,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:50:52,664 INFO L479 AbstractCegarLoop]: Abstraction has 15784 states and 23416 transitions. [2020-10-14 08:50:52,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:50:52,664 INFO L276 IsEmpty]: Start isEmpty. Operand 15784 states and 23416 transitions. [2020-10-14 08:50:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 08:50:52,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:50:52,666 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, 1, 1, 1, 1, 1] [2020-10-14 08:50:52,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:50:52,667 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:50:52,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:50:52,667 INFO L82 PathProgramCache]: Analyzing trace with hash 731609511, now seen corresponding path program 1 times [2020-10-14 08:50:52,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:50:52,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702669501] [2020-10-14 08:50:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:50:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:52,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:52,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:52,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:52,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:52,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:53,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:54,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:54,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:54,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:57,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:57,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:57,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 08:50:57,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:50:57,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:50:57,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:57,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:50:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 08:50:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:50:57,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:57,879 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:50:57,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:50:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:50:57,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:50:57,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:50:57,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:50:57,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:50:57,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:50:57,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:50:57,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:50:57,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:50:57,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:50:57,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:50:57,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:50:57,897 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 08:50:57,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702669501] [2020-10-14 08:50:57,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:50:57,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:50:57,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197672221] [2020-10-14 08:50:57,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:50:57,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:50:57,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:50:57,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:50:57,898 INFO L87 Difference]: Start difference. First operand 15784 states and 23416 transitions. Second operand 5 states. [2020-10-14 08:50:59,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:50:59,507 INFO L93 Difference]: Finished difference Result 25618 states and 38001 transitions. [2020-10-14 08:50:59,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:50:59,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-14 08:50:59,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:50:59,548 INFO L225 Difference]: With dead ends: 25618 [2020-10-14 08:50:59,548 INFO L226 Difference]: Without dead ends: 25616 [2020-10-14 08:50:59,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:50:59,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25616 states. [2020-10-14 08:51:00,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25616 to 15816. [2020-10-14 08:51:00,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15816 states. [2020-10-14 08:51:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15816 states to 15816 states and 23336 transitions. [2020-10-14 08:51:00,597 INFO L78 Accepts]: Start accepts. Automaton has 15816 states and 23336 transitions. Word has length 88 [2020-10-14 08:51:00,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:51:00,597 INFO L479 AbstractCegarLoop]: Abstraction has 15816 states and 23336 transitions. [2020-10-14 08:51:00,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:51:00,598 INFO L276 IsEmpty]: Start isEmpty. Operand 15816 states and 23336 transitions. [2020-10-14 08:51:00,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 08:51:00,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:51:00,600 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, 1, 1, 1, 1, 1] [2020-10-14 08:51:00,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:51:00,600 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:51:00,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:51:00,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1131699549, now seen corresponding path program 1 times [2020-10-14 08:51:00,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:51:00,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723545804] [2020-10-14 08:51:00,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:51:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:00,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:00,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:00,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:00,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:00,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:01,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:02,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:02,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:02,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:03,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:04,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:05,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:05,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 08:51:05,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:51:05,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:51:05,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:05,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:05,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:51:05,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:51:05,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 08:51:05,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:51:05,808 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:51:05,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:51:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:05,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:05,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:05,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:51:05,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:51:05,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:51:05,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:05,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:51:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:51:05,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:51:05,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:51:05,837 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 08:51:05,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723545804] [2020-10-14 08:51:05,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:51:05,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:51:05,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517694677] [2020-10-14 08:51:05,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:51:05,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:51:05,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:51:05,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:51:05,838 INFO L87 Difference]: Start difference. First operand 15816 states and 23336 transitions. Second operand 5 states. [2020-10-14 08:51:06,011 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 08:51:07,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:51:07,768 INFO L93 Difference]: Finished difference Result 37708 states and 55738 transitions. [2020-10-14 08:51:07,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:51:07,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-14 08:51:07,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:51:07,801 INFO L225 Difference]: With dead ends: 37708 [2020-10-14 08:51:07,801 INFO L226 Difference]: Without dead ends: 22330 [2020-10-14 08:51:07,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:51:07,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22330 states. [2020-10-14 08:51:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22330 to 22328. [2020-10-14 08:51:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22328 states. [2020-10-14 08:51:09,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22328 states to 22328 states and 32888 transitions. [2020-10-14 08:51:09,004 INFO L78 Accepts]: Start accepts. Automaton has 22328 states and 32888 transitions. Word has length 88 [2020-10-14 08:51:09,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:51:09,005 INFO L479 AbstractCegarLoop]: Abstraction has 22328 states and 32888 transitions. [2020-10-14 08:51:09,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:51:09,005 INFO L276 IsEmpty]: Start isEmpty. Operand 22328 states and 32888 transitions. [2020-10-14 08:51:09,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 08:51:09,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:51:09,008 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, 1, 1, 1, 1, 1, 1] [2020-10-14 08:51:09,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:51:09,008 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:51:09,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:51:09,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2068566794, now seen corresponding path program 1 times [2020-10-14 08:51:09,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:51:09,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136531217] [2020-10-14 08:51:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:51:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:09,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:09,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:09,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:09,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:10,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:10,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:11,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:11,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:12,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:14,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:14,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 08:51:14,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:51:14,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:51:14,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:14,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:51:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:51:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 08:51:14,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:51:14,324 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:51:14,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:51:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:14,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:14,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:14,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:51:14,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:51:14,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:51:14,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:14,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:51:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:51:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:51:14,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:51:14,361 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 08:51:14,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136531217] [2020-10-14 08:51:14,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:51:14,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:51:14,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064518217] [2020-10-14 08:51:14,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:51:14,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:51:14,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:51:14,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:51:14,363 INFO L87 Difference]: Start difference. First operand 22328 states and 32888 transitions. Second operand 11 states. [2020-10-14 08:51:14,589 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-14 08:51:17,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:51:17,890 INFO L93 Difference]: Finished difference Result 55794 states and 81973 transitions. [2020-10-14 08:51:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:51:17,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 89 [2020-10-14 08:51:17,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:51:17,924 INFO L225 Difference]: With dead ends: 55794 [2020-10-14 08:51:17,924 INFO L226 Difference]: Without dead ends: 33794 [2020-10-14 08:51:17,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:51:17,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33794 states. [2020-10-14 08:51:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33794 to 22328. [2020-10-14 08:51:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22328 states. [2020-10-14 08:51:19,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22328 states to 22328 states and 32873 transitions. [2020-10-14 08:51:19,341 INFO L78 Accepts]: Start accepts. Automaton has 22328 states and 32873 transitions. Word has length 89 [2020-10-14 08:51:19,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:51:19,342 INFO L479 AbstractCegarLoop]: Abstraction has 22328 states and 32873 transitions. [2020-10-14 08:51:19,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:51:19,342 INFO L276 IsEmpty]: Start isEmpty. Operand 22328 states and 32873 transitions. [2020-10-14 08:51:19,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 08:51:19,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:51:19,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:51:19,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:51:19,346 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:51:19,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:51:19,346 INFO L82 PathProgramCache]: Analyzing trace with hash 142690464, now seen corresponding path program 1 times [2020-10-14 08:51:19,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:51:19,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151454962] [2020-10-14 08:51:19,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:51:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:19,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:19,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:19,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:19,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:20,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:20,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:20,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:20,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:20,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:20,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:21,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:21,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:22,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:24,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:24,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 08:51:24,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:51:24,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:51:24,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:24,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:51:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:51:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 08:51:24,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:51:24,658 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:51:24,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:51:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:24,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:24,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:24,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:51:24,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:51:24,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:51:24,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:24,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:51:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:51:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:51:24,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:51:24,694 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 08:51:24,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151454962] [2020-10-14 08:51:24,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:51:24,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:51:24,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257750715] [2020-10-14 08:51:24,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:51:24,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:51:24,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:51:24,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:51:24,696 INFO L87 Difference]: Start difference. First operand 22328 states and 32873 transitions. Second operand 11 states. [2020-10-14 08:51:24,913 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-14 08:51:28,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:51:28,369 INFO L93 Difference]: Finished difference Result 55824 states and 82000 transitions. [2020-10-14 08:51:28,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:51:28,370 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 89 [2020-10-14 08:51:28,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:51:28,408 INFO L225 Difference]: With dead ends: 55824 [2020-10-14 08:51:28,409 INFO L226 Difference]: Without dead ends: 33794 [2020-10-14 08:51:28,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:51:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33794 states. [2020-10-14 08:51:30,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33794 to 22328. [2020-10-14 08:51:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22328 states. [2020-10-14 08:51:30,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22328 states to 22328 states and 32867 transitions. [2020-10-14 08:51:30,227 INFO L78 Accepts]: Start accepts. Automaton has 22328 states and 32867 transitions. Word has length 89 [2020-10-14 08:51:30,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:51:30,228 INFO L479 AbstractCegarLoop]: Abstraction has 22328 states and 32867 transitions. [2020-10-14 08:51:30,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:51:30,228 INFO L276 IsEmpty]: Start isEmpty. Operand 22328 states and 32867 transitions. [2020-10-14 08:51:30,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 08:51:30,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:51:30,230 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, 1, 1, 1, 1, 1, 1] [2020-10-14 08:51:30,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:51:30,230 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:51:30,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:51:30,231 INFO L82 PathProgramCache]: Analyzing trace with hash -2127086326, now seen corresponding path program 1 times [2020-10-14 08:51:30,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:51:30,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030377403] [2020-10-14 08:51:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:51:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:30,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:30,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:30,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:30,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:30,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:30,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:31,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:31,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:35,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:35,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 08:51:35,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:51:35,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:51:35,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:35,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:51:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:51:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 08:51:35,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:51:35,650 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:51:35,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:51:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:35,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:35,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:35,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:51:35,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:51:35,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:51:35,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:35,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:51:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:51:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:51:35,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:51:35,683 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 08:51:35,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030377403] [2020-10-14 08:51:35,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:51:35,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:51:35,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361253052] [2020-10-14 08:51:35,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:51:35,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:51:35,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:51:35,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:51:35,685 INFO L87 Difference]: Start difference. First operand 22328 states and 32867 transitions. Second operand 10 states. [2020-10-14 08:51:35,877 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-14 08:51:39,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:51:39,938 INFO L93 Difference]: Finished difference Result 54474 states and 80212 transitions. [2020-10-14 08:51:39,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:51:39,939 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-10-14 08:51:39,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:51:39,975 INFO L225 Difference]: With dead ends: 54474 [2020-10-14 08:51:39,976 INFO L226 Difference]: Without dead ends: 33344 [2020-10-14 08:51:39,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-14 08:51:40,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33344 states. [2020-10-14 08:51:42,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33344 to 22294. [2020-10-14 08:51:42,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22294 states. [2020-10-14 08:51:42,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22294 states to 22294 states and 32803 transitions. [2020-10-14 08:51:42,319 INFO L78 Accepts]: Start accepts. Automaton has 22294 states and 32803 transitions. Word has length 89 [2020-10-14 08:51:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:51:42,319 INFO L479 AbstractCegarLoop]: Abstraction has 22294 states and 32803 transitions. [2020-10-14 08:51:42,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:51:42,319 INFO L276 IsEmpty]: Start isEmpty. Operand 22294 states and 32803 transitions. [2020-10-14 08:51:42,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 08:51:42,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:51:42,322 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:51:42,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:51:42,322 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:51:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:51:42,322 INFO L82 PathProgramCache]: Analyzing trace with hash 709611333, now seen corresponding path program 1 times [2020-10-14 08:51:42,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:51:42,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283714412] [2020-10-14 08:51:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:51:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:42,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:42,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:42,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:42,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:43,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:43,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:43,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:44,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:44,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:47,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:47,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 08:51:47,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:51:47,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:51:47,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:47,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:51:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:51:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 08:51:47,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:51:47,610 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:51:47,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:51:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:47,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:47,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:51:47,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:51:47,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:51:47,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:47,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:47,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:51:47,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:51:47,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:51:47,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:51:47,649 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 08:51:47,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283714412] [2020-10-14 08:51:47,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:51:47,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:51:47,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295604141] [2020-10-14 08:51:47,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:51:47,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:51:47,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:51:47,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:51:47,650 INFO L87 Difference]: Start difference. First operand 22294 states and 32803 transitions. Second operand 11 states. [2020-10-14 08:51:47,860 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 08:51:53,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:51:53,753 INFO L93 Difference]: Finished difference Result 66407 states and 97416 transitions. [2020-10-14 08:51:53,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:51:53,753 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 90 [2020-10-14 08:51:53,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:51:53,799 INFO L225 Difference]: With dead ends: 66407 [2020-10-14 08:51:53,799 INFO L226 Difference]: Without dead ends: 44387 [2020-10-14 08:51:53,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:51:53,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44387 states. [2020-10-14 08:51:56,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44387 to 22294. [2020-10-14 08:51:56,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22294 states. [2020-10-14 08:51:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22294 states to 22294 states and 32801 transitions. [2020-10-14 08:51:56,555 INFO L78 Accepts]: Start accepts. Automaton has 22294 states and 32801 transitions. Word has length 90 [2020-10-14 08:51:56,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:51:56,555 INFO L479 AbstractCegarLoop]: Abstraction has 22294 states and 32801 transitions. [2020-10-14 08:51:56,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:51:56,556 INFO L276 IsEmpty]: Start isEmpty. Operand 22294 states and 32801 transitions. [2020-10-14 08:51:56,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 08:51:56,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:51:56,557 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:51:56,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:51:56,557 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:51:56,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:51:56,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1485289232, now seen corresponding path program 1 times [2020-10-14 08:51:56,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:51:56,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521446926] [2020-10-14 08:51:56,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:51:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:56,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:56,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:56,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:56,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:57,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:58,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:01,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:01,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 08:52:01,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:52:01,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:52:01,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:01,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:52:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:52:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 08:52:01,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:01,928 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:52:01,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:01,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:01,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:01,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:01,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:01,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:52:01,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:01,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:01,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:01,953 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 08:52:01,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521446926] [2020-10-14 08:52:01,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:01,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:52:01,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892407230] [2020-10-14 08:52:01,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:52:01,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:01,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:52:01,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:52:01,955 INFO L87 Difference]: Start difference. First operand 22294 states and 32801 transitions. Second operand 10 states. [2020-10-14 08:52:02,133 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 08:52:07,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:07,679 INFO L93 Difference]: Finished difference Result 54439 states and 80143 transitions. [2020-10-14 08:52:07,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:52:07,680 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-10-14 08:52:07,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:07,713 INFO L225 Difference]: With dead ends: 54439 [2020-10-14 08:52:07,713 INFO L226 Difference]: Without dead ends: 33289 [2020-10-14 08:52:07,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-14 08:52:07,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33289 states. [2020-10-14 08:52:10,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33289 to 22239. [2020-10-14 08:52:10,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22239 states. [2020-10-14 08:52:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22239 states to 22239 states and 32719 transitions. [2020-10-14 08:52:10,872 INFO L78 Accepts]: Start accepts. Automaton has 22239 states and 32719 transitions. Word has length 90 [2020-10-14 08:52:10,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:10,872 INFO L479 AbstractCegarLoop]: Abstraction has 22239 states and 32719 transitions. [2020-10-14 08:52:10,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:52:10,872 INFO L276 IsEmpty]: Start isEmpty. Operand 22239 states and 32719 transitions. [2020-10-14 08:52:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 08:52:10,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:10,874 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:52:10,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:52:10,874 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:10,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:10,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1880997100, now seen corresponding path program 1 times [2020-10-14 08:52:10,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:10,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773357784] [2020-10-14 08:52:10,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:10,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:11,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:11,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:12,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:12,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:12,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:15,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:15,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 08:52:15,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:52:15,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:52:15,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:15,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:52:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:52:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 08:52:15,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:16,167 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:52:16,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:16,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:16,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:16,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:16,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:16,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:52:16,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:16,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:52:16,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:16,203 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 08:52:16,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773357784] [2020-10-14 08:52:16,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:16,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:52:16,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919839210] [2020-10-14 08:52:16,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:52:16,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:16,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:52:16,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:52:16,205 INFO L87 Difference]: Start difference. First operand 22239 states and 32719 transitions. Second operand 11 states. [2020-10-14 08:52:16,420 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-14 08:52:23,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:23,139 INFO L93 Difference]: Finished difference Result 55619 states and 81673 transitions. [2020-10-14 08:52:23,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:52:23,139 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 91 [2020-10-14 08:52:23,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:23,167 INFO L225 Difference]: With dead ends: 55619 [2020-10-14 08:52:23,168 INFO L226 Difference]: Without dead ends: 33705 [2020-10-14 08:52:23,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:52:23,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33705 states. [2020-10-14 08:52:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33705 to 22239. [2020-10-14 08:52:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22239 states. [2020-10-14 08:52:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22239 states to 22239 states and 32695 transitions. [2020-10-14 08:52:26,598 INFO L78 Accepts]: Start accepts. Automaton has 22239 states and 32695 transitions. Word has length 91 [2020-10-14 08:52:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:26,598 INFO L479 AbstractCegarLoop]: Abstraction has 22239 states and 32695 transitions. [2020-10-14 08:52:26,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:52:26,599 INFO L276 IsEmpty]: Start isEmpty. Operand 22239 states and 32695 transitions. [2020-10-14 08:52:26,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 08:52:26,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:26,600 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:52:26,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 08:52:26,600 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:26,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:26,601 INFO L82 PathProgramCache]: Analyzing trace with hash -802570520, now seen corresponding path program 1 times [2020-10-14 08:52:26,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:26,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676051399] [2020-10-14 08:52:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:26,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:26,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:26,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:27,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:27,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:27,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:28,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:28,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:29,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:29,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:29,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:29,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:31,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:31,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:31,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 08:52:31,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:52:31,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:52:31,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:31,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:52:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:52:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 08:52:31,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:31,921 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:52:31,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:31,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:31,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:31,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:31,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:31,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:52:31,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:31,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:31,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:31,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:31,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:31,948 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 08:52:31,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676051399] [2020-10-14 08:52:31,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:31,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:52:31,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523045275] [2020-10-14 08:52:31,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:52:31,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:31,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:52:31,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:52:31,949 INFO L87 Difference]: Start difference. First operand 22239 states and 32695 transitions. Second operand 10 states. [2020-10-14 08:52:32,154 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 08:52:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:55,564 INFO L93 Difference]: Finished difference Result 138533 states and 204698 transitions. [2020-10-14 08:52:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 08:52:55,565 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-10-14 08:52:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:55,712 INFO L225 Difference]: With dead ends: 138533 [2020-10-14 08:52:55,712 INFO L226 Difference]: Without dead ends: 117175 [2020-10-14 08:52:55,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2020-10-14 08:52:55,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117175 states. [2020-10-14 08:53:08,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117175 to 63317. [2020-10-14 08:53:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63317 states. [2020-10-14 08:53:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63317 states to 63317 states and 93196 transitions. [2020-10-14 08:53:08,489 INFO L78 Accepts]: Start accepts. Automaton has 63317 states and 93196 transitions. Word has length 91 [2020-10-14 08:53:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:53:08,489 INFO L479 AbstractCegarLoop]: Abstraction has 63317 states and 93196 transitions. [2020-10-14 08:53:08,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:53:08,490 INFO L276 IsEmpty]: Start isEmpty. Operand 63317 states and 93196 transitions. [2020-10-14 08:53:08,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 08:53:08,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:53:08,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:53:08,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 08:53:08,491 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:53:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:53:08,492 INFO L82 PathProgramCache]: Analyzing trace with hash -261723642, now seen corresponding path program 1 times [2020-10-14 08:53:08,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:53:08,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398308109] [2020-10-14 08:53:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:53:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:08,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:08,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:08,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:09,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:10,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:11,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:12,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:12,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 08:53:12,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:53:12,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4438 [2020-10-14 08:53:12,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:12,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:12,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:53:12,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:53:12,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 08:53:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:53:13,304 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:53:13,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:13,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:13,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:13,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:13,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:13,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:53:13,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:13,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:53:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:53:13,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:13,337 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 08:53:13,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398308109] [2020-10-14 08:53:13,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:13,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:53:13,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404967312] [2020-10-14 08:53:13,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:53:13,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:13,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:53:13,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:53:13,339 INFO L87 Difference]: Start difference. First operand 63317 states and 93196 transitions. Second operand 10 states. [2020-10-14 08:53:13,524 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 144