/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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:44:37,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:44:37,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:44:37,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:44:37,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:44:37,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:44:37,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:44:37,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:44:37,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:44:37,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:44:37,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:44:37,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:44:37,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:44:37,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:44:37,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:44:37,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:44:37,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:44:37,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:44:37,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:44:37,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:44:37,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:44:37,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:44:37,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:44:37,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:44:37,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:44:37,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:44:37,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:44:37,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:44:37,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:44:37,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:44:37,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:44:37,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:44:37,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:44:37,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:44:37,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:44:37,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:44:37,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:44:37,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:44:37,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:44:37,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:44:37,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:44:37,697 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 [2020-09-24 21:44:37,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:44:37,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:44:37,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:44:37,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:44:37,731 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:44:37,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:44:37,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:44:37,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:44:37,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:44:37,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:44:37,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:44:37,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:44:37,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:44:37,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:44:37,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:44:37,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:44:37,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:44:37,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:44:37,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:44:37,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:44:37,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:44:37,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:37,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:44:37,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:44:37,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:44:37,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:44:37,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:44:37,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:44:37,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:44:37,736 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:44:38,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:44:38,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:44:38,251 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:44:38,253 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:44:38,253 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:44:38,255 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-24 21:44:38,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/daa74ef22/a02a4b3976f9488d8276a14024079224/FLAG5969a6494 [2020-09-24 21:44:39,006 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:44:39,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-24 21:44:39,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/daa74ef22/a02a4b3976f9488d8276a14024079224/FLAG5969a6494 [2020-09-24 21:44:39,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/daa74ef22/a02a4b3976f9488d8276a14024079224 [2020-09-24 21:44:39,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:44:39,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:44:39,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:39,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:44:39,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:44:39,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:39" (1/1) ... [2020-09-24 21:44:39,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633024eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:39, skipping insertion in model container [2020-09-24 21:44:39,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:39" (1/1) ... [2020-09-24 21:44:39,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:44:39,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:44:40,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:40,047 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:44:40,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:40,162 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:44:40,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:40 WrapperNode [2020-09-24 21:44:40,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:40,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:44:40,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:44:40,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:44:40,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:40" (1/1) ... [2020-09-24 21:44:40,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:40" (1/1) ... [2020-09-24 21:44:40,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:40" (1/1) ... [2020-09-24 21:44:40,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:40" (1/1) ... [2020-09-24 21:44:40,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:40" (1/1) ... [2020-09-24 21:44:40,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:40" (1/1) ... [2020-09-24 21:44:40,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:40" (1/1) ... [2020-09-24 21:44:40,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:44:40,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:44:40,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:44:40,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:44:40,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:40" (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 [2020-09-24 21:44:40,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:44:40,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:44:40,394 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:44:40,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:44:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:44:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:44:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:44:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:44:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:44:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:44:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:44:41,814 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:44:41,814 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:44:41,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:41 BoogieIcfgContainer [2020-09-24 21:44:41,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:44:41,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:44:41,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:44:41,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:44:41,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:44:39" (1/3) ... [2020-09-24 21:44:41,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5005f83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:41, skipping insertion in model container [2020-09-24 21:44:41,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:40" (2/3) ... [2020-09-24 21:44:41,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5005f83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:41, skipping insertion in model container [2020-09-24 21:44:41,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:41" (3/3) ... [2020-09-24 21:44:41,834 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-09-24 21:44:41,848 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:44:41,860 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:44:41,887 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:44:41,922 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:44:41,922 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:44:41,922 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:44:41,922 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:44:41,922 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:44:41,923 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:44:41,923 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:44:41,923 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:44:41,954 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:44:41,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 21:44:41,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:41,968 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] [2020-09-24 21:44:41,969 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:41,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:41,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1178337343, now seen corresponding path program 1 times [2020-09-24 21:44:41,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:41,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685670091] [2020-09-24 21:44:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:42,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:43,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:43,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 21:44:43,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:44:43,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1434 [2020-09-24 21:44:43,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 21:44:43,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:43,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:43,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:43,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:43,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:43,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:43,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:44:43,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:43,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:43,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685670091] [2020-09-24 21:44:43,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:43,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:44:43,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124053018] [2020-09-24 21:44:43,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:44:43,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:43,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:44:43,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:44:43,883 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:44:45,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:45,901 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-24 21:44:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:44:45,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-09-24 21:44:45,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:45,942 INFO L225 Difference]: With dead ends: 1104 [2020-09-24 21:44:45,943 INFO L226 Difference]: Without dead ends: 578 [2020-09-24 21:44:45,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:44:45,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-24 21:44:46,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-24 21:44:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-24 21:44:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-24 21:44:46,046 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 80 [2020-09-24 21:44:46,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:46,047 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-24 21:44:46,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:44:46,048 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-24 21:44:46,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 21:44:46,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:46,060 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:46,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:46,063 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:46,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:46,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1494862159, now seen corresponding path program 1 times [2020-09-24 21:44:46,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:46,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117203360] [2020-09-24 21:44:46,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:46,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:46,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:46,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:47,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:49,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:49,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 21:44:49,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:44:49,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3695 [2020-09-24 21:44:49,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:44:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-24 21:44:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:49,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:49,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:49,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:50,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:50,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:50,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:44:50,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:50,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:50,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:50,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:44:50,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:50,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:50,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:50,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:50,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:50,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:50,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:50,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-24 21:44:50,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:44:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 21:44:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 14 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:50,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117203360] [2020-09-24 21:44:50,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:50,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:44:50,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035268608] [2020-09-24 21:44:50,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:44:50,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:50,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:44:50,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:44:50,708 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 9 states. [2020-09-24 21:44:54,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:54,062 INFO L93 Difference]: Finished difference Result 1286 states and 1594 transitions. [2020-09-24 21:44:54,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:44:54,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 159 [2020-09-24 21:44:54,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:54,069 INFO L225 Difference]: With dead ends: 1286 [2020-09-24 21:44:54,069 INFO L226 Difference]: Without dead ends: 757 [2020-09-24 21:44:54,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:44:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-09-24 21:44:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 695. [2020-09-24 21:44:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 21:44:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 859 transitions. [2020-09-24 21:44:54,136 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 859 transitions. Word has length 159 [2020-09-24 21:44:54,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:54,141 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 859 transitions. [2020-09-24 21:44:54,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:44:54,142 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 859 transitions. [2020-09-24 21:44:54,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-09-24 21:44:54,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:54,165 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:54,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:44:54,166 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:54,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:54,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1479061528, now seen corresponding path program 1 times [2020-09-24 21:44:54,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:54,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621347295] [2020-09-24 21:44:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:54,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:55,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:59,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-09-24 21:44:59,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:44:59,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-24 21:44:59,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:59,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:44:59,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:44:59,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-24 21:44:59,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:59,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:59,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:59,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:59,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:59,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:44:59,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:59,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:59,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:59,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:44:59,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:59,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:59,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:59,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:59,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 21:44:59,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:44:59,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:44:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:59,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:00,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:00,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:00,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 21:45:00,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:00,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-09-24 21:45:00,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 21:45:00,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-24 21:45:00,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621347295] [2020-09-24 21:45:00,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:00,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:00,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462744779] [2020-09-24 21:45:00,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:00,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:00,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:00,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:00,437 INFO L87 Difference]: Start difference. First operand 695 states and 859 transitions. Second operand 9 states. [2020-09-24 21:45:04,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:04,282 INFO L93 Difference]: Finished difference Result 1586 states and 2072 transitions. [2020-09-24 21:45:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:45:04,284 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 288 [2020-09-24 21:45:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:04,296 INFO L225 Difference]: With dead ends: 1586 [2020-09-24 21:45:04,296 INFO L226 Difference]: Without dead ends: 1032 [2020-09-24 21:45:04,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:45:04,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2020-09-24 21:45:04,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 996. [2020-09-24 21:45:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-09-24 21:45:04,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1205 transitions. [2020-09-24 21:45:04,357 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1205 transitions. Word has length 288 [2020-09-24 21:45:04,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:04,359 INFO L479 AbstractCegarLoop]: Abstraction has 996 states and 1205 transitions. [2020-09-24 21:45:04,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:04,359 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1205 transitions. [2020-09-24 21:45:04,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-09-24 21:45:04,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:04,367 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:04,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:04,367 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:04,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:04,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1176407906, now seen corresponding path program 1 times [2020-09-24 21:45:04,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:04,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872759415] [2020-09-24 21:45:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:09,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:09,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-09-24 21:45:09,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:09,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-24 21:45:09,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:45:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-09-24 21:45:09,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:09,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:09,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:09,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:09,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:09,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:09,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:45:09,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:09,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:09,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:09,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:09,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:09,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:09,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:09,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 21:45:09,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:09,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:09,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:09,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:09,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:45:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:10,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:45:10,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-09-24 21:45:10,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 21:45:10,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 194 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:10,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872759415] [2020-09-24 21:45:10,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:10,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:45:10,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269026795] [2020-09-24 21:45:10,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:45:10,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:10,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:45:10,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:10,412 INFO L87 Difference]: Start difference. First operand 996 states and 1205 transitions. Second operand 10 states. [2020-09-24 21:45:13,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:13,921 INFO L93 Difference]: Finished difference Result 2386 states and 3164 transitions. [2020-09-24 21:45:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:45:13,923 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 294 [2020-09-24 21:45:13,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:13,939 INFO L225 Difference]: With dead ends: 2386 [2020-09-24 21:45:13,939 INFO L226 Difference]: Without dead ends: 1555 [2020-09-24 21:45:13,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:45:13,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2020-09-24 21:45:14,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1346. [2020-09-24 21:45:14,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1346 states. [2020-09-24 21:45:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1631 transitions. [2020-09-24 21:45:14,030 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1631 transitions. Word has length 294 [2020-09-24 21:45:14,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:14,031 INFO L479 AbstractCegarLoop]: Abstraction has 1346 states and 1631 transitions. [2020-09-24 21:45:14,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:45:14,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1631 transitions. [2020-09-24 21:45:14,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-09-24 21:45:14,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:14,038 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:14,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:14,038 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:14,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:14,039 INFO L82 PathProgramCache]: Analyzing trace with hash -311310720, now seen corresponding path program 1 times [2020-09-24 21:45:14,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:14,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144985323] [2020-09-24 21:45:14,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:14,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:14,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:14,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:15,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:17,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:19,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:19,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-09-24 21:45:19,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:45:19,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:45:19,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:19,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:45:19,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:19,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-24 21:45:19,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:19,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:19,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:19,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:19,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:19,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:45:19,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:19,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:19,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:19,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:19,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:19,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:19,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:45:19,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:19,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 21:45:19,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:45:19,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:45:19,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:45:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:19,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:19,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:19,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:45:19,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:19,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-24 21:45:19,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:19,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 21:45:19,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 131 proven. 81 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:20,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144985323] [2020-09-24 21:45:20,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:20,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:45:20,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202070071] [2020-09-24 21:45:20,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:45:20,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:20,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:45:20,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:20,109 INFO L87 Difference]: Start difference. First operand 1346 states and 1631 transitions. Second operand 10 states. [2020-09-24 21:45:24,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:24,119 INFO L93 Difference]: Finished difference Result 2769 states and 3472 transitions. [2020-09-24 21:45:24,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 21:45:24,122 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 304 [2020-09-24 21:45:24,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:24,131 INFO L225 Difference]: With dead ends: 2769 [2020-09-24 21:45:24,131 INFO L226 Difference]: Without dead ends: 1599 [2020-09-24 21:45:24,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:45:24,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2020-09-24 21:45:24,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1542. [2020-09-24 21:45:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2020-09-24 21:45:24,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 1886 transitions. [2020-09-24 21:45:24,182 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 1886 transitions. Word has length 304 [2020-09-24 21:45:24,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:24,183 INFO L479 AbstractCegarLoop]: Abstraction has 1542 states and 1886 transitions. [2020-09-24 21:45:24,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:45:24,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 1886 transitions. [2020-09-24 21:45:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-09-24 21:45:24,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:24,191 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:24,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:45:24,191 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:24,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:24,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1571871743, now seen corresponding path program 1 times [2020-09-24 21:45:24,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:24,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229384856] [2020-09-24 21:45:24,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:24,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:24,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:24,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:25,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking...