/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=SMALLEST --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/Problem02_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:23:51,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:23:51,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:23:51,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:23:51,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:23:51,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:23:51,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:23:51,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:23:51,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:23:51,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:23:51,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:23:51,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:23:51,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:23:51,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:23:51,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:23:51,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:23:51,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:23:51,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:23:51,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:23:51,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:23:51,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:23:51,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:23:51,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:23:51,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:23:51,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:23:51,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:23:51,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:23:51,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:23:51,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:23:51,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:23:51,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:23:51,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:23:51,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:23:51,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:23:51,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:23:51,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:23:51,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:23:51,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:23:51,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:23:51,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:23:51,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:23:51,648 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 18:23:51,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:23:51,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:23:51,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:23:51,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:23:51,698 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:23:51,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:23:51,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:23:51,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:23:51,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:23:51,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:23:51,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:23:51,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:23:51,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:23:51,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:23:51,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:23:51,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:23:51,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:23:51,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:23:51,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:23:51,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:23:51,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:23:51,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:51,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:23:51,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:23:51,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:23:51,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:23:51,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:23:51,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:23:51,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:23:51,705 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:23:52,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:23:52,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:23:52,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:23:52,244 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:23:52,245 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:23:52,246 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-24 18:23:52,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82fb8bae9/14cf6c9b205049a39c8fb53b93542882/FLAG73e72130d [2020-09-24 18:23:52,931 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:23:52,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-24 18:23:52,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82fb8bae9/14cf6c9b205049a39c8fb53b93542882/FLAG73e72130d [2020-09-24 18:23:53,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82fb8bae9/14cf6c9b205049a39c8fb53b93542882 [2020-09-24 18:23:53,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:23:53,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:23:53,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:53,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:23:53,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:23:53,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:53" (1/1) ... [2020-09-24 18:23:53,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:53, skipping insertion in model container [2020-09-24 18:23:53,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:53" (1/1) ... [2020-09-24 18:23:53,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:23:53,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:23:53,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:53,799 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:23:54,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:54,082 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:23:54,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54 WrapperNode [2020-09-24 18:23:54,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:54,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:23:54,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:23:54,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:23:54,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (1/1) ... [2020-09-24 18:23:54,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (1/1) ... [2020-09-24 18:23:54,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (1/1) ... [2020-09-24 18:23:54,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (1/1) ... [2020-09-24 18:23:54,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (1/1) ... [2020-09-24 18:23:54,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (1/1) ... [2020-09-24 18:23:54,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (1/1) ... [2020-09-24 18:23:54,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:23:54,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:23:54,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:23:54,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:23:54,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (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 18:23:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:23:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:23:54,366 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:23:54,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:23:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:23:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:23:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:23:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:23:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:23:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:23:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:55,792 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:55,792 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:55,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:55 BoogieIcfgContainer [2020-09-24 18:23:55,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:55,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:55,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:55,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:55,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:53" (1/3) ... [2020-09-24 18:23:55,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a6de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:55, skipping insertion in model container [2020-09-24 18:23:55,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (2/3) ... [2020-09-24 18:23:55,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a6de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:55, skipping insertion in model container [2020-09-24 18:23:55,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:55" (3/3) ... [2020-09-24 18:23:55,811 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label58.c [2020-09-24 18:23:55,823 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:55,834 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:55,857 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:55,892 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:55,893 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:55,893 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:55,893 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:55,893 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:55,893 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:55,894 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:55,894 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:55,926 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:23:55,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-24 18:23:55,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:55,948 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:55,949 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:55,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:55,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1064851622, now seen corresponding path program 1 times [2020-09-24 18:23:55,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:55,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606475125] [2020-09-24 18:23:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:56,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:57,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:59,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:00,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:00,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:01,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:01,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-24 18:24:01,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:24:01,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:24:01,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:24:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:24:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 18:24:01,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:24:01,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:01,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:01,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:01,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:01,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 18:24:01,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:01,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:01,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:01,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:24:01,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:01,620 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 18:24:01,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606475125] [2020-09-24 18:24:01,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:24:01,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:24:01,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136231338] [2020-09-24 18:24:01,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:24:01,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:01,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:24:01,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:24:01,656 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:24:04,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:04,043 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-24 18:24:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:24:04,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-09-24 18:24:04,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:04,072 INFO L225 Difference]: With dead ends: 1386 [2020-09-24 18:24:04,072 INFO L226 Difference]: Without dead ends: 787 [2020-09-24 18:24:04,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:04,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-24 18:24:04,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-24 18:24:04,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-24 18:24:04,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-24 18:24:04,200 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 129 [2020-09-24 18:24:04,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:04,202 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-24 18:24:04,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:24:04,202 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-24 18:24:04,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-24 18:24:04,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:04,210 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:04,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:24:04,211 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:04,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:04,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1321748602, now seen corresponding path program 1 times [2020-09-24 18:24:04,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:04,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60528603] [2020-09-24 18:24:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:04,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:04,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:04,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:04,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:08,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:08,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:08,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:09,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:09,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-24 18:24:09,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:24:09,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:24:09,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 18:24:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-24 18:24:09,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:24:09,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:09,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:09,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:09,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:09,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:09,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:24:09,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:09,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:09,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:09,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:09,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:24:09,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:24:09,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:24:09,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:09,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60528603] [2020-09-24 18:24:09,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:09,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:09,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308548725] [2020-09-24 18:24:09,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:09,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:09,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:09,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:09,491 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-24 18:24:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:11,818 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-24 18:24:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:11,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-24 18:24:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:11,829 INFO L225 Difference]: With dead ends: 1900 [2020-09-24 18:24:11,830 INFO L226 Difference]: Without dead ends: 1189 [2020-09-24 18:24:11,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:11,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-24 18:24:11,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-24 18:24:11,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-24 18:24:11,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-24 18:24:11,883 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 147 [2020-09-24 18:24:11,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:11,885 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-24 18:24:11,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:11,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-24 18:24:11,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 18:24:11,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:11,891 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:11,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:24:11,892 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:11,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:11,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2057686971, now seen corresponding path program 1 times [2020-09-24 18:24:11,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:11,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859719816] [2020-09-24 18:24:11,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:11,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:12,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:12,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:12,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:16,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:16,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:16,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:16,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-24 18:24:16,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:24:16,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:24:16,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:16,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:24:16,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 18:24:16,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:24:17,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:17,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:17,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:17,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:17,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:17,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:24:17,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:17,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:17,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:17,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:17,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:24:17,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:17,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:24:17,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:17,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:17,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:17,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:24:17,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:17,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859719816] [2020-09-24 18:24:17,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:17,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:24:17,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123710002] [2020-09-24 18:24:17,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:24:17,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:17,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:24:17,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:17,251 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 6 states. [2020-09-24 18:24:19,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:19,828 INFO L93 Difference]: Finished difference Result 3384 states and 4497 transitions. [2020-09-24 18:24:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:24:19,828 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2020-09-24 18:24:19,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:19,851 INFO L225 Difference]: With dead ends: 3384 [2020-09-24 18:24:19,851 INFO L226 Difference]: Without dead ends: 2351 [2020-09-24 18:24:19,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:24:19,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2020-09-24 18:24:19,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 2273. [2020-09-24 18:24:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-09-24 18:24:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 2854 transitions. [2020-09-24 18:24:20,022 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 2854 transitions. Word has length 153 [2020-09-24 18:24:20,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:20,022 INFO L479 AbstractCegarLoop]: Abstraction has 2273 states and 2854 transitions. [2020-09-24 18:24:20,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:24:20,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 2854 transitions. [2020-09-24 18:24:20,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-24 18:24:20,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:20,037 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:20,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:24:20,038 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:20,039 INFO L82 PathProgramCache]: Analyzing trace with hash 429333270, now seen corresponding path program 1 times [2020-09-24 18:24:20,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:20,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439390122] [2020-09-24 18:24:20,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:20,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:25,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:25,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-24 18:24:25,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:24:25,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:24:25,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 18:24:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 18:24:25,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:25,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:25,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:25,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:25,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:25,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:25,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:24:25,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:25,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:25,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:25,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:25,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:25,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:25,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:24:25,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:24:25,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:25,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 18:24:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:25,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:25,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:25,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:24:25,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:25,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:24:25,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:24:25,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:25,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 18:24:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:25,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:25,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:25,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 18:24:25,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:25,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-24 18:24:25,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:25,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 18:24:25,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 18:24:25,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439390122] [2020-09-24 18:24:25,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:25,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:25,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775232836] [2020-09-24 18:24:25,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:25,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:25,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:25,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:25,714 INFO L87 Difference]: Start difference. First operand 2273 states and 2854 transitions. Second operand 7 states. [2020-09-24 18:24:28,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:28,201 INFO L93 Difference]: Finished difference Result 5206 states and 6710 transitions. [2020-09-24 18:24:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:24:28,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-09-24 18:24:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:28,219 INFO L225 Difference]: With dead ends: 5206 [2020-09-24 18:24:28,220 INFO L226 Difference]: Without dead ends: 2955 [2020-09-24 18:24:28,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:24:28,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-09-24 18:24:28,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 2923. [2020-09-24 18:24:28,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2923 states. [2020-09-24 18:24:28,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 3656 transitions. [2020-09-24 18:24:28,342 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 3656 transitions. Word has length 255 [2020-09-24 18:24:28,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:28,343 INFO L479 AbstractCegarLoop]: Abstraction has 2923 states and 3656 transitions. [2020-09-24 18:24:28,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:28,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 3656 transitions. [2020-09-24 18:24:28,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-24 18:24:28,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:28,360 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:28,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:24:28,360 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:28,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:28,361 INFO L82 PathProgramCache]: Analyzing trace with hash -920330418, now seen corresponding path program 1 times [2020-09-24 18:24:28,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:28,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889751904] [2020-09-24 18:24:28,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:28,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:28,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:28,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:31,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:33,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:33,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-24 18:24:33,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:24:33,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-24 18:24:33,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:33,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 18:24:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:24:33,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:33,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:33,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:33,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:33,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:33,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:33,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:24:33,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:33,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:33,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:33,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:24:33,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:33,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:24:33,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:24:33,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:33,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 18:24:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:33,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:33,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:33,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:33,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:33,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 18:24:33,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:24:33,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:33,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 18:24:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:33,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:33,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:33,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 18:24:33,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:33,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 18:24:33,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:33,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 18:24:33,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:33,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 138 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 18:24:33,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889751904] [2020-09-24 18:24:33,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:33,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:33,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646073792] [2020-09-24 18:24:33,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:33,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:33,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:33,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:33,892 INFO L87 Difference]: Start difference. First operand 2923 states and 3656 transitions. Second operand 7 states. [2020-09-24 18:24:36,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:36,300 INFO L93 Difference]: Finished difference Result 5634 states and 7135 transitions. [2020-09-24 18:24:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:24:36,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-09-24 18:24:36,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:36,319 INFO L225 Difference]: With dead ends: 5634 [2020-09-24 18:24:36,319 INFO L226 Difference]: Without dead ends: 2395 [2020-09-24 18:24:36,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:24:36,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2020-09-24 18:24:36,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2312. [2020-09-24 18:24:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2312 states. [2020-09-24 18:24:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 2692 transitions. [2020-09-24 18:24:36,403 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 2692 transitions. Word has length 267 [2020-09-24 18:24:36,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:36,404 INFO L479 AbstractCegarLoop]: Abstraction has 2312 states and 2692 transitions. [2020-09-24 18:24:36,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:36,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 2692 transitions. [2020-09-24 18:24:36,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-09-24 18:24:36,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:36,416 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-24 18:24:36,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:24:36,416 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:36,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:36,417 INFO L82 PathProgramCache]: Analyzing trace with hash -766087476, now seen corresponding path program 1 times [2020-09-24 18:24:36,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:36,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705530561] [2020-09-24 18:24:36,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:36,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:36,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:36,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:36,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:36,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:38,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking...