/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 --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=1000 --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/Problem10_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:31:36,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:31:36,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:31:36,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:31:36,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:31:36,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:31:36,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:31:36,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:31:36,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:31:36,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:31:36,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:31:36,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:31:36,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:31:36,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:31:36,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:31:36,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:31:36,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:31:36,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:31:36,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:31:36,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:31:36,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:31:36,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:31:36,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:31:36,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:31:36,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:31:36,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:31:36,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:31:36,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:31:36,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:31:36,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:31:36,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:31:36,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:31:36,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:31:36,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:31:36,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:31:36,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:31:36,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:31:36,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:31:36,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:31:36,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:31:36,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:31:36,604 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 [2020-09-21 12:31:36,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:31:36,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:31:36,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:31:36,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:31:36,656 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:31:36,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:31:36,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:31:36,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:31:36,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:31:36,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:31:36,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:31:36,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:31:36,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:31:36,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:31:36,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:31:36,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:31:36,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:31:36,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:31:36,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:31:36,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:31:36,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:31:36,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:31:36,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:31:36,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:31:36,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:31:36,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:31:36,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:31:36,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:31:36,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:31:36,663 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.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=1000;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=1000;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=1000;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=1000;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:31:37,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:31:37,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:31:37,124 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:31:37,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:31:37,126 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:31:37,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label34.c [2020-09-21 12:31:37,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1efbe5bac/59cdbe102eaa45fc93d9e3c6ba612a51/FLAGf765d9075 [2020-09-21 12:31:37,847 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:31:37,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label34.c [2020-09-21 12:31:37,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1efbe5bac/59cdbe102eaa45fc93d9e3c6ba612a51/FLAGf765d9075 [2020-09-21 12:31:38,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1efbe5bac/59cdbe102eaa45fc93d9e3c6ba612a51 [2020-09-21 12:31:38,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:31:38,096 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:31:38,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:31:38,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:31:38,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:31:38,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:31:38" (1/1) ... [2020-09-21 12:31:38,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@116ad863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:38, skipping insertion in model container [2020-09-21 12:31:38,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:31:38" (1/1) ... [2020-09-21 12:31:38,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:31:38,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:31:38,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:31:38,661 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:31:38,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:31:38,876 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:31:38,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:38 WrapperNode [2020-09-21 12:31:38,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:31:38,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:31:38,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:31:38,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:31:38,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:38" (1/1) ... [2020-09-21 12:31:38,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:38" (1/1) ... [2020-09-21 12:31:38,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:38" (1/1) ... [2020-09-21 12:31:38,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:38" (1/1) ... [2020-09-21 12:31:38,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:38" (1/1) ... [2020-09-21 12:31:38,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:38" (1/1) ... [2020-09-21 12:31:38,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:38" (1/1) ... [2020-09-21 12:31:38,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:31:38,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:31:38,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:31:38,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:31:38,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:38" (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 [2020-09-21 12:31:39,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:31:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:31:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 12:31:39,096 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:31:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 12:31:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:31:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:31:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:31:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:31:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:31:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:31:40,556 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:31:40,557 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:31:40,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:31:40 BoogieIcfgContainer [2020-09-21 12:31:40,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:31:40,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:31:40,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:31:40,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:31:40,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:31:38" (1/3) ... [2020-09-21 12:31:40,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39975d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:31:40, skipping insertion in model container [2020-09-21 12:31:40,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:38" (2/3) ... [2020-09-21 12:31:40,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39975d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:31:40, skipping insertion in model container [2020-09-21 12:31:40,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:31:40" (3/3) ... [2020-09-21 12:31:40,576 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label34.c [2020-09-21 12:31:40,590 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:31:40,603 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:31:40,632 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:31:40,670 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:31:40,671 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:31:40,671 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:31:40,671 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:31:40,671 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:31:40,671 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:31:40,671 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:31:40,672 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:31:40,703 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-09-21 12:31:40,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-21 12:31:40,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:31:40,717 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] [2020-09-21 12:31:40,717 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:31:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:31:40,725 INFO L82 PathProgramCache]: Analyzing trace with hash -864026194, now seen corresponding path program 1 times [2020-09-21 12:31:40,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:31:40,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684113185] [2020-09-21 12:31:40,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:31:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:41,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:41,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:41,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:31:41,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:41,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-09-21 12:31:41,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:31:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:31:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:31:41,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:31:41,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:31:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:41,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:41,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:41,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:31:41,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:41,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:31:41,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:41,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:31:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:31:41,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:31:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:31:41,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684113185] [2020-09-21 12:31:41,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:31:41,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:31:41,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829082912] [2020-09-21 12:31:41,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:31:41,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:31:41,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:31:41,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:31:41,831 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 4 states. [2020-09-21 12:31:43,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:31:43,650 INFO L93 Difference]: Finished difference Result 581 states and 1006 transitions. [2020-09-21 12:31:43,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:31:43,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-09-21 12:31:43,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:31:43,682 INFO L225 Difference]: With dead ends: 581 [2020-09-21 12:31:43,683 INFO L226 Difference]: Without dead ends: 302 [2020-09-21 12:31:43,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:31:43,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-09-21 12:31:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 298. [2020-09-21 12:31:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-21 12:31:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 395 transitions. [2020-09-21 12:31:43,814 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 395 transitions. Word has length 69 [2020-09-21 12:31:43,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:31:43,815 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 395 transitions. [2020-09-21 12:31:43,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:31:43,815 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 395 transitions. [2020-09-21 12:31:43,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-21 12:31:43,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:31:43,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:31:43,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:31:43,824 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:31:43,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:31:43,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1207192086, now seen corresponding path program 1 times [2020-09-21 12:31:43,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:31:43,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076216786] [2020-09-21 12:31:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:31:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:43,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:44,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:44,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:44,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-21 12:31:44,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:31:44,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-09-21 12:31:44,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:31:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-21 12:31:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 12:31:44,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:31:45,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:31:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:45,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:45,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:45,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:31:45,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:45,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:31:45,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:45,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:31:45,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:45,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:31:45,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:45,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:31:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:45,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:45,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:45,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:31:45,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:45,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-21 12:31:45,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:45,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:31:45,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:45,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-21 12:31:45,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:31:45,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076216786] [2020-09-21 12:31:45,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:31:45,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:31:45,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735983537] [2020-09-21 12:31:45,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:31:45,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:31:45,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:31:45,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:31:45,292 INFO L87 Difference]: Start difference. First operand 298 states and 395 transitions. Second operand 5 states. [2020-09-21 12:31:46,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:31:46,548 INFO L93 Difference]: Finished difference Result 884 states and 1197 transitions. [2020-09-21 12:31:46,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:31:46,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-21 12:31:46,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:31:46,558 INFO L225 Difference]: With dead ends: 884 [2020-09-21 12:31:46,558 INFO L226 Difference]: Without dead ends: 592 [2020-09-21 12:31:46,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:31:46,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-09-21 12:31:46,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 588. [2020-09-21 12:31:46,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2020-09-21 12:31:46,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 756 transitions. [2020-09-21 12:31:46,593 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 756 transitions. Word has length 139 [2020-09-21 12:31:46,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:31:46,594 INFO L479 AbstractCegarLoop]: Abstraction has 588 states and 756 transitions. [2020-09-21 12:31:46,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:31:46,595 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 756 transitions. [2020-09-21 12:31:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-21 12:31:46,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:31:46,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:31:46,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:31:46,599 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:31:46,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:31:46,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1223274417, now seen corresponding path program 1 times [2020-09-21 12:31:46,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:31:46,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873037386] [2020-09-21 12:31:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:31:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:46,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:47,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:47,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:47,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-21 12:31:47,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:31:47,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-09-21 12:31:47,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:47,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:31:47,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-21 12:31:47,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:31:47,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:31:47,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:31:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:47,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:47,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:47,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:31:47,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:47,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:31:47,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:31:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:31:47,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:47,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:31:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:47,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:47,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:47,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:31:47,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:47,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-21 12:31:47,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:31:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:47,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-21 12:31:47,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:47,563 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:31:47,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873037386] [2020-09-21 12:31:47,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:31:47,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:31:47,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615717259] [2020-09-21 12:31:47,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:31:47,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:31:47,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:31:47,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:31:47,566 INFO L87 Difference]: Start difference. First operand 588 states and 756 transitions. Second operand 5 states. [2020-09-21 12:31:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:31:48,631 INFO L93 Difference]: Finished difference Result 1197 states and 1546 transitions. [2020-09-21 12:31:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:31:48,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-21 12:31:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:31:48,636 INFO L225 Difference]: With dead ends: 1197 [2020-09-21 12:31:48,637 INFO L226 Difference]: Without dead ends: 592 [2020-09-21 12:31:48,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:31:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-09-21 12:31:48,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 588. [2020-09-21 12:31:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2020-09-21 12:31:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 751 transitions. [2020-09-21 12:31:48,663 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 751 transitions. Word has length 148 [2020-09-21 12:31:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:31:48,663 INFO L479 AbstractCegarLoop]: Abstraction has 588 states and 751 transitions. [2020-09-21 12:31:48,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:31:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 751 transitions. [2020-09-21 12:31:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-21 12:31:48,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:31:48,668 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:31:48,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:31:48,668 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:31:48,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:31:48,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1093508086, now seen corresponding path program 1 times [2020-09-21 12:31:48,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:31:48,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233596635] [2020-09-21 12:31:48,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:31:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:48,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:49,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:49,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:49,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-21 12:31:49,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:31:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:31:49,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:31:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-21 12:31:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-21 12:31:49,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:31:49,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:31:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:49,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:49,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:49,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:31:49,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:49,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:31:49,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:31:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:31:49,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:31:49,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:31:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:49,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:49,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:49,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:31:49,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:49,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 12:31:49,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:49,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:31:49,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:49,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-21 12:31:49,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:31:49,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:31:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:50,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:50,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:31:50,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:50,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-21 12:31:50,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:31:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:31:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-21 12:31:50,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:31:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:31:50,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233596635] [2020-09-21 12:31:50,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:31:50,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:31:50,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120623684] [2020-09-21 12:31:50,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:31:50,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:31:50,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:31:50,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:31:50,201 INFO L87 Difference]: Start difference. First operand 588 states and 751 transitions. Second operand 7 states. [2020-09-21 12:31:52,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:31:52,123 INFO L93 Difference]: Finished difference Result 1502 states and 2050 transitions. [2020-09-21 12:31:52,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:31:52,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-09-21 12:31:52,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:31:52,133 INFO L225 Difference]: With dead ends: 1502 [2020-09-21 12:31:52,133 INFO L226 Difference]: Without dead ends: 920 [2020-09-21 12:31:52,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:31:52,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-21 12:31:52,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 892. [2020-09-21 12:31:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-09-21 12:31:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1140 transitions. [2020-09-21 12:31:52,176 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1140 transitions. Word has length 211 [2020-09-21 12:31:52,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:31:52,177 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1140 transitions. [2020-09-21 12:31:52,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:31:52,177 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1140 transitions. [2020-09-21 12:31:52,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-21 12:31:52,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:31:52,181 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, 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] [2020-09-21 12:31:52,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:31:52,182 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:31:52,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:31:52,183 INFO L82 PathProgramCache]: Analyzing trace with hash 975052414, now seen corresponding path program 1 times [2020-09-21 12:31:52,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:31:52,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250940502] [2020-09-21 12:31:52,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:31:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:52,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:53,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:53,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-21 12:31:53,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:31:53,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-09-21 12:31:53,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:53,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:31:53,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-21 12:31:53,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 12:31:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:53,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:31:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:53,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:53,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:31:53,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:53,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:31:53,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:31:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:31:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:31:53,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:31:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:53,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:53,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:53,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:31:53,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:53,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:31:53,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:53,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:31:53,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:53,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:31:53,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:53,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:31:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:53,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:53,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:53,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-21 12:31:53,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:53,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-21 12:31:53,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:53,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:31:53,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:53,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:31:53,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-21 12:31:53,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250940502] [2020-09-21 12:31:53,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:31:53,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:31:53,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790430251] [2020-09-21 12:31:53,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:31:53,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:31:53,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:31:53,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:31:53,707 INFO L87 Difference]: Start difference. First operand 892 states and 1140 transitions. Second operand 5 states. [2020-09-21 12:31:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:31:54,540 INFO L93 Difference]: Finished difference Result 1798 states and 2317 transitions. [2020-09-21 12:31:54,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:31:54,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-09-21 12:31:54,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:31:54,546 INFO L225 Difference]: With dead ends: 1798 [2020-09-21 12:31:54,547 INFO L226 Difference]: Without dead ends: 896 [2020-09-21 12:31:54,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:31:54,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-21 12:31:54,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 890. [2020-09-21 12:31:54,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-09-21 12:31:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1131 transitions. [2020-09-21 12:31:54,582 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1131 transitions. Word has length 221 [2020-09-21 12:31:54,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:31:54,583 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1131 transitions. [2020-09-21 12:31:54,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:31:54,583 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1131 transitions. [2020-09-21 12:31:54,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-21 12:31:54,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:31:54,590 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, 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] [2020-09-21 12:31:54,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:31:54,590 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:31:54,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:31:54,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1402325518, now seen corresponding path program 1 times [2020-09-21 12:31:54,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:31:54,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401750959] [2020-09-21 12:31:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:31:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:54,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:54,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:55,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:55,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-21 12:31:55,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:31:55,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:31:55,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:55,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:31:55,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-09-21 12:31:55,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:31:55,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:55,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:31:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:55,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:55,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:55,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:31:55,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:55,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:31:55,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:55,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:31:55,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:55,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:31:55,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:31:55,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:31:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:55,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:55,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:55,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:31:55,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:55,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:31:55,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:55,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:31:55,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:55,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:31:55,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:55,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:31:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:55,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:55,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:55,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-21 12:31:55,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:55,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-21 12:31:55,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:31:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-21 12:31:55,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-21 12:31:56,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401750959] [2020-09-21 12:31:56,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:31:56,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:31:56,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322494001] [2020-09-21 12:31:56,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:31:56,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:31:56,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:31:56,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:31:56,035 INFO L87 Difference]: Start difference. First operand 890 states and 1131 transitions. Second operand 5 states. [2020-09-21 12:31:56,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:31:56,965 INFO L93 Difference]: Finished difference Result 1795 states and 2294 transitions. [2020-09-21 12:31:56,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:31:56,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-09-21 12:31:56,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:31:56,976 INFO L225 Difference]: With dead ends: 1795 [2020-09-21 12:31:56,978 INFO L226 Difference]: Without dead ends: 896 [2020-09-21 12:31:56,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:31:56,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-21 12:31:57,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 890. [2020-09-21 12:31:57,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-09-21 12:31:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1127 transitions. [2020-09-21 12:31:57,022 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1127 transitions. Word has length 229 [2020-09-21 12:31:57,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:31:57,023 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1127 transitions. [2020-09-21 12:31:57,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:31:57,023 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1127 transitions. [2020-09-21 12:31:57,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-21 12:31:57,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:31:57,027 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, 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] [2020-09-21 12:31:57,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:31:57,028 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:31:57,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:31:57,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1296496030, now seen corresponding path program 1 times [2020-09-21 12:31:57,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:31:57,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806366272] [2020-09-21 12:31:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:31:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:57,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:57,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:58,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:58,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-21 12:31:58,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:31:58,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1036 [2020-09-21 12:31:58,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:31:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-21 12:31:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:31:58,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:58,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:31:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:58,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:58,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:58,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:31:58,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:58,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:31:58,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:58,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:31:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:31:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:31:58,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:31:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:58,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:58,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:58,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:31:58,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:58,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:31:58,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:31:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:31:58,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:58,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:31:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:58,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:58,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:58,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-21 12:31:58,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:58,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-21 12:31:58,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:58,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:31:58,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:58,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-21 12:31:58,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:31:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-21 12:31:58,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806366272] [2020-09-21 12:31:58,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:31:58,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:31:58,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530188430] [2020-09-21 12:31:58,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:31:58,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:31:58,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:31:58,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:31:58,683 INFO L87 Difference]: Start difference. First operand 890 states and 1127 transitions. Second operand 5 states. [2020-09-21 12:32:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:00,034 INFO L93 Difference]: Finished difference Result 1797 states and 2288 transitions. [2020-09-21 12:32:00,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:00,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-09-21 12:32:00,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:00,051 INFO L225 Difference]: With dead ends: 1797 [2020-09-21 12:32:00,051 INFO L226 Difference]: Without dead ends: 896 [2020-09-21 12:32:00,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:00,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-21 12:32:00,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 890. [2020-09-21 12:32:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-09-21 12:32:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1123 transitions. [2020-09-21 12:32:00,094 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1123 transitions. Word has length 237 [2020-09-21 12:32:00,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:00,095 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1123 transitions. [2020-09-21 12:32:00,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:00,095 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1123 transitions. [2020-09-21 12:32:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-21 12:32:00,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:00,101 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, 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] [2020-09-21 12:32:00,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:32:00,101 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:00,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:00,102 INFO L82 PathProgramCache]: Analyzing trace with hash 997171801, now seen corresponding path program 1 times [2020-09-21 12:32:00,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:00,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583166911] [2020-09-21 12:32:00,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:00,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:00,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:01,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:01,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-09-21 12:32:01,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:01,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:32:01,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-09-21 12:32:01,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 12:32:01,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:01,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:01,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:01,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:01,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:01,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:01,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:32:01,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:01,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:01,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:01,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:01,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:01,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:01,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:01,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:01,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 12:32:01,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:01,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-21 12:32:01,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:01,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:01,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:01,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:01,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-21 12:32:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:01,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:01,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:01,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:32:01,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:01,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-21 12:32:01,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:01,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:01,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:01,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-21 12:32:01,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-09-21 12:32:01,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583166911] [2020-09-21 12:32:01,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:01,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:01,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220020206] [2020-09-21 12:32:01,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:01,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:01,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:01,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:01,707 INFO L87 Difference]: Start difference. First operand 890 states and 1123 transitions. Second operand 5 states. [2020-09-21 12:32:02,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:02,810 INFO L93 Difference]: Finished difference Result 1780 states and 2252 transitions. [2020-09-21 12:32:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:02,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-09-21 12:32:02,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:02,822 INFO L225 Difference]: With dead ends: 1780 [2020-09-21 12:32:02,822 INFO L226 Difference]: Without dead ends: 896 [2020-09-21 12:32:02,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:02,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-21 12:32:02,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 890. [2020-09-21 12:32:02,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-09-21 12:32:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1058 transitions. [2020-09-21 12:32:02,858 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1058 transitions. Word has length 256 [2020-09-21 12:32:02,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:02,858 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1058 transitions. [2020-09-21 12:32:02,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1058 transitions. [2020-09-21 12:32:02,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-21 12:32:02,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:02,864 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, 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] [2020-09-21 12:32:02,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:32:02,865 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:02,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:02,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1704350917, now seen corresponding path program 1 times [2020-09-21 12:32:02,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:02,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277800853] [2020-09-21 12:32:02,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:02,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:03,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:03,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:03,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-09-21 12:32:03,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:03,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-09-21 12:32:03,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-09-21 12:32:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:32:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:04,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:04,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:04,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:04,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:04,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:04,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:32:04,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:04,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:04,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:04,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:04,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:04,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:04,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:04,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:04,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:32:04,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:04,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:32:04,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:04,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:04,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:04,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:32:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:04,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:04,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:04,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-21 12:32:04,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:04,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-21 12:32:04,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:04,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:04,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-21 12:32:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-21 12:32:04,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277800853] [2020-09-21 12:32:04,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:04,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:04,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870709117] [2020-09-21 12:32:04,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:04,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:04,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:04,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:04,500 INFO L87 Difference]: Start difference. First operand 890 states and 1058 transitions. Second operand 5 states. [2020-09-21 12:32:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:05,413 INFO L93 Difference]: Finished difference Result 1794 states and 2143 transitions. [2020-09-21 12:32:05,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:05,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-09-21 12:32:05,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:05,420 INFO L225 Difference]: With dead ends: 1794 [2020-09-21 12:32:05,421 INFO L226 Difference]: Without dead ends: 896 [2020-09-21 12:32:05,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:05,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-21 12:32:05,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 890. [2020-09-21 12:32:05,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-09-21 12:32:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1056 transitions. [2020-09-21 12:32:05,454 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1056 transitions. Word has length 258 [2020-09-21 12:32:05,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:05,455 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1056 transitions. [2020-09-21 12:32:05,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1056 transitions. [2020-09-21 12:32:05,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-21 12:32:05,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:05,460 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, 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] [2020-09-21 12:32:05,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:32:05,460 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:05,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:05,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1709052022, now seen corresponding path program 1 times [2020-09-21 12:32:05,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:05,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850405907] [2020-09-21 12:32:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:05,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:05,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:05,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:06,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:06,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-21 12:32:06,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:06,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-09-21 12:32:06,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-09-21 12:32:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:32:06,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:06,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:06,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:06,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:06,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:06,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:06,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:06,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:06,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:06,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:06,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:06,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:06,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:06,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:06,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:06,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 12:32:06,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:06,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 12:32:06,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:06,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:06,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-21 12:32:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:06,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:06,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:06,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:32:06,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:06,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-21 12:32:06,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:06,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:06,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:06,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 12:32:06,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-09-21 12:32:06,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850405907] [2020-09-21 12:32:06,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:06,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:06,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271415315] [2020-09-21 12:32:06,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:06,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:06,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:06,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:06,951 INFO L87 Difference]: Start difference. First operand 890 states and 1056 transitions. Second operand 5 states. [2020-09-21 12:32:07,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:07,899 INFO L93 Difference]: Finished difference Result 1789 states and 2133 transitions. [2020-09-21 12:32:07,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:07,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2020-09-21 12:32:07,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:07,905 INFO L225 Difference]: With dead ends: 1789 [2020-09-21 12:32:07,905 INFO L226 Difference]: Without dead ends: 896 [2020-09-21 12:32:07,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:07,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-21 12:32:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 890. [2020-09-21 12:32:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-09-21 12:32:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1053 transitions. [2020-09-21 12:32:07,937 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1053 transitions. Word has length 259 [2020-09-21 12:32:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:07,938 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1053 transitions. [2020-09-21 12:32:07,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1053 transitions. [2020-09-21 12:32:07,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-09-21 12:32:07,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:07,943 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, 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] [2020-09-21 12:32:07,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:32:07,944 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:07,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:07,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1838232886, now seen corresponding path program 1 times [2020-09-21 12:32:07,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:07,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654814133] [2020-09-21 12:32:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:08,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:08,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:08,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:09,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:09,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-09-21 12:32:09,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:09,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-09-21 12:32:09,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:09,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:09,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-09-21 12:32:09,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:32:09,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:09,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:09,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:09,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:09,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:09,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:32:09,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:09,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:09,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:09,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:09,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:09,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:09,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:09,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:09,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:32:09,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:32:09,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:09,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:09,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:32:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:09,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:09,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:09,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-21 12:32:09,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:09,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-21 12:32:09,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-21 12:32:09,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-21 12:32:09,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654814133] [2020-09-21 12:32:09,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:09,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:09,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878675748] [2020-09-21 12:32:09,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:09,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:09,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:09,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:09,643 INFO L87 Difference]: Start difference. First operand 890 states and 1053 transitions. Second operand 5 states. [2020-09-21 12:32:10,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:10,701 INFO L93 Difference]: Finished difference Result 1789 states and 2127 transitions. [2020-09-21 12:32:10,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:10,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 281 [2020-09-21 12:32:10,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:10,710 INFO L225 Difference]: With dead ends: 1789 [2020-09-21 12:32:10,710 INFO L226 Difference]: Without dead ends: 894 [2020-09-21 12:32:10,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:10,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-09-21 12:32:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 888. [2020-09-21 12:32:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-09-21 12:32:10,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1048 transitions. [2020-09-21 12:32:10,761 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1048 transitions. Word has length 281 [2020-09-21 12:32:10,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:10,762 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1048 transitions. [2020-09-21 12:32:10,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:10,763 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1048 transitions. [2020-09-21 12:32:10,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-09-21 12:32:10,768 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:10,769 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, 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] [2020-09-21 12:32:10,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:32:10,769 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:10,770 INFO L82 PathProgramCache]: Analyzing trace with hash 335415001, now seen corresponding path program 1 times [2020-09-21 12:32:10,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:10,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458875106] [2020-09-21 12:32:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:10,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:11,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:11,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:11,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:11,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-09-21 12:32:11,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:11,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-09-21 12:32:11,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-09-21 12:32:11,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-21 12:32:11,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:12,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:12,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:12,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:12,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:12,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:12,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:12,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:12,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:12,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:12,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:12,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:12,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 12:32:12,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:12,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-21 12:32:12,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:12,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:12,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:12,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-21 12:32:12,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:12,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-21 12:32:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:12,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:12,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:12,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-21 12:32:12,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:12,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-21 12:32:12,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:12,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:12,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-21 12:32:12,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 236 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:12,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458875106] [2020-09-21 12:32:12,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:12,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:12,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260188357] [2020-09-21 12:32:12,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:12,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:12,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:12,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:12,725 INFO L87 Difference]: Start difference. First operand 888 states and 1048 transitions. Second operand 7 states. [2020-09-21 12:32:14,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:14,794 INFO L93 Difference]: Finished difference Result 2430 states and 3025 transitions. [2020-09-21 12:32:14,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:32:14,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 320 [2020-09-21 12:32:14,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:14,804 INFO L225 Difference]: With dead ends: 2430 [2020-09-21 12:32:14,804 INFO L226 Difference]: Without dead ends: 1548 [2020-09-21 12:32:14,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:14,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2020-09-21 12:32:14,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1494. [2020-09-21 12:32:14,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-09-21 12:32:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1730 transitions. [2020-09-21 12:32:14,864 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1730 transitions. Word has length 320 [2020-09-21 12:32:14,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:14,864 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1730 transitions. [2020-09-21 12:32:14,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:14,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1730 transitions. [2020-09-21 12:32:14,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-09-21 12:32:14,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:14,872 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, 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] [2020-09-21 12:32:14,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:32:14,873 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:14,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:14,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1516853278, now seen corresponding path program 1 times [2020-09-21 12:32:14,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:14,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320849179] [2020-09-21 12:32:14,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:15,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:15,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:15,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-09-21 12:32:15,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:15,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-21 12:32:15,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:15,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 269 [2020-09-21 12:32:15,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 12:32:15,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:16,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:16,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:16,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:16,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:16,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:16,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:16,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:16,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:16,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:16,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:16,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:16,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 12:32:16,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:16,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 12:32:16,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:16,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:16,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:16,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:16,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-21 12:32:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:16,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:16,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-21 12:32:16,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:16,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-21 12:32:16,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-21 12:32:16,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-21 12:32:16,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320849179] [2020-09-21 12:32:16,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:16,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:16,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769509476] [2020-09-21 12:32:16,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:16,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:16,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:16,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:16,473 INFO L87 Difference]: Start difference. First operand 1494 states and 1730 transitions. Second operand 5 states. [2020-09-21 12:32:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:17,787 INFO L93 Difference]: Finished difference Result 3425 states and 4014 transitions. [2020-09-21 12:32:17,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:17,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-09-21 12:32:17,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:17,799 INFO L225 Difference]: With dead ends: 3425 [2020-09-21 12:32:17,799 INFO L226 Difference]: Without dead ends: 1937 [2020-09-21 12:32:17,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:17,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2020-09-21 12:32:17,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1931. [2020-09-21 12:32:17,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1931 states. [2020-09-21 12:32:17,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 2224 transitions. [2020-09-21 12:32:17,851 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 2224 transitions. Word has length 325 [2020-09-21 12:32:17,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:17,852 INFO L479 AbstractCegarLoop]: Abstraction has 1931 states and 2224 transitions. [2020-09-21 12:32:17,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:17,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 2224 transitions. [2020-09-21 12:32:17,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-09-21 12:32:17,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:17,858 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:17,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:32:17,858 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:17,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:17,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1291474405, now seen corresponding path program 1 times [2020-09-21 12:32:17,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:17,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220638504] [2020-09-21 12:32:17,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:18,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:18,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:18,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:18,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-09-21 12:32:18,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:18,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-09-21 12:32:18,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 286 [2020-09-21 12:32:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 12:32:18,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:18,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:18,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:18,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:18,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:18,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:18,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:18,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:18,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:18,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:18,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:18,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:18,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-21 12:32:18,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:18,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 12:32:18,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:18,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:18,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-21 12:32:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:19,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:19,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-21 12:32:19,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:19,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-21 12:32:19,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:19,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:19,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:19,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-21 12:32:19,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-09-21 12:32:19,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220638504] [2020-09-21 12:32:19,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:19,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:19,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605036994] [2020-09-21 12:32:19,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:19,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:19,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:19,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:19,205 INFO L87 Difference]: Start difference. First operand 1931 states and 2224 transitions. Second operand 5 states. [2020-09-21 12:32:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:20,554 INFO L93 Difference]: Finished difference Result 4295 states and 4975 transitions. [2020-09-21 12:32:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:20,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2020-09-21 12:32:20,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:20,570 INFO L225 Difference]: With dead ends: 4295 [2020-09-21 12:32:20,571 INFO L226 Difference]: Without dead ends: 1933 [2020-09-21 12:32:20,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:20,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2020-09-21 12:32:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1927. [2020-09-21 12:32:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1927 states. [2020-09-21 12:32:20,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 2193 transitions. [2020-09-21 12:32:20,628 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 2193 transitions. Word has length 342 [2020-09-21 12:32:20,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:20,629 INFO L479 AbstractCegarLoop]: Abstraction has 1927 states and 2193 transitions. [2020-09-21 12:32:20,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:20,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 2193 transitions. [2020-09-21 12:32:20,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-09-21 12:32:20,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:20,636 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:20,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:32:20,636 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:20,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:20,637 INFO L82 PathProgramCache]: Analyzing trace with hash 688551026, now seen corresponding path program 1 times [2020-09-21 12:32:20,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:20,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349507850] [2020-09-21 12:32:20,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:20,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:21,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:21,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:21,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-09-21 12:32:21,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:21,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-09-21 12:32:21,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 335 [2020-09-21 12:32:21,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:32:21,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:21,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:21,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:21,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:21,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:21,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:21,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:21,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:21,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:22,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:22,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:22,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:22,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 12:32:22,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:22,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 12:32:22,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:22,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-21 12:32:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:22,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:22,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:22,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-21 12:32:22,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:22,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:32:22,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:22,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-09-21 12:32:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:22,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:22,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:22,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-21 12:32:22,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:22,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-21 12:32:22,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:22,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:22,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:22,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-21 12:32:22,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:22,500 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 189 proven. 3 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-09-21 12:32:22,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349507850] [2020-09-21 12:32:22,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:22,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:22,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130304539] [2020-09-21 12:32:22,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:22,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:22,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:22,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:22,503 INFO L87 Difference]: Start difference. First operand 1927 states and 2193 transitions. Second operand 5 states. [2020-09-21 12:32:23,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:23,359 INFO L93 Difference]: Finished difference Result 3720 states and 4238 transitions. [2020-09-21 12:32:23,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:23,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 389 [2020-09-21 12:32:23,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:23,361 INFO L225 Difference]: With dead ends: 3720 [2020-09-21 12:32:23,361 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:32:23,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:23,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:32:23,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:32:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:32:23,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:32:23,370 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 389 [2020-09-21 12:32:23,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:23,371 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:32:23,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:23,371 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:32:23,371 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:32:23,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 12:32:23,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.