/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:21:25,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:21:25,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:21:25,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:21:25,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:21:25,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:21:25,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:21:25,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:21:25,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:21:25,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:21:25,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:21:25,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:21:25,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:21:25,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:21:25,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:21:25,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:21:25,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:21:25,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:21:25,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:21:25,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:21:25,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:21:25,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:21:25,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:21:25,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:21:25,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:21:25,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:21:25,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:21:25,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:21:25,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:21:25,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:21:25,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:21:25,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:21:25,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:21:25,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:21:25,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:21:25,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:21:25,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:21:25,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:21:25,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:21:25,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:21:25,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:21:25,704 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:21:25,731 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:21:25,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:21:25,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:21:25,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:21:25,733 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:21:25,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:21:25,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:21:25,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:21:25,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:21:25,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:21:25,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:21:25,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:21:25,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:21:25,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:21:25,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:21:25,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:21:25,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:21:25,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:21:25,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:21:25,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:21:25,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:21:25,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:25,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:21:25,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:21:25,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:21:25,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:21:25,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:21:25,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:21:25,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:21:25,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:21:26,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:21:26,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:21:26,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:21:26,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:21:26,240 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:21:26,241 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2020-09-24 18:21:26,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c075a01c/cbfabe89d1d546daa1adc59237c5cd72/FLAG8a4ccbc6d [2020-09-24 18:21:26,925 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:21:26,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2020-09-24 18:21:26,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c075a01c/cbfabe89d1d546daa1adc59237c5cd72/FLAG8a4ccbc6d [2020-09-24 18:21:27,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c075a01c/cbfabe89d1d546daa1adc59237c5cd72 [2020-09-24 18:21:27,149 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:21:27,158 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:21:27,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:27,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:21:27,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:21:27,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:27" (1/1) ... [2020-09-24 18:21:27,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:27, skipping insertion in model container [2020-09-24 18:21:27,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:27" (1/1) ... [2020-09-24 18:21:27,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:21:27,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:21:27,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:27,759 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:21:28,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:28,059 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:21:28,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28 WrapperNode [2020-09-24 18:21:28,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:28,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:21:28,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:21:28,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:21:28,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... [2020-09-24 18:21:28,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... [2020-09-24 18:21:28,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... [2020-09-24 18:21:28,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... [2020-09-24 18:21:28,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... [2020-09-24 18:21:28,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... [2020-09-24 18:21:28,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... [2020-09-24 18:21:28,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:21:28,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:21:28,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:21:28,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:21:28,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:28,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:21:28,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:21:28,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:21:28,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:21:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:21:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:21:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:21:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:21:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:21:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:21:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:21:29,637 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:21:29,638 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:21:29,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:29 BoogieIcfgContainer [2020-09-24 18:21:29,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:21:29,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:21:29,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:21:29,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:21:29,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:21:27" (1/3) ... [2020-09-24 18:21:29,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:29, skipping insertion in model container [2020-09-24 18:21:29,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (2/3) ... [2020-09-24 18:21:29,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:29, skipping insertion in model container [2020-09-24 18:21:29,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:29" (3/3) ... [2020-09-24 18:21:29,667 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label09.c [2020-09-24 18:21:29,682 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:21:29,698 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:21:29,724 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:21:29,774 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:21:29,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:21:29,775 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:21:29,775 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:21:29,776 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:21:29,776 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:21:29,776 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:21:29,776 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:21:29,818 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:21:29,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-24 18:21:29,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:29,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:29,860 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:29,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:29,868 INFO L82 PathProgramCache]: Analyzing trace with hash -260189822, now seen corresponding path program 1 times [2020-09-24 18:21:29,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:29,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840094341] [2020-09-24 18:21:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:30,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:30,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:32,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:33,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:35,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 18:21:35,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:21:35,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:21:35,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:35,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:35,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:21:35,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-24 18:21:35,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:21:35,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:35,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:35,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:35,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:35,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:21:35,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:21:35,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:35,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840094341] [2020-09-24 18:21:35,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:35,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:21:35,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597897084] [2020-09-24 18:21:35,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:21:35,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:35,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:21:35,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:21:35,564 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:21:38,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:38,002 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-24 18:21:38,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:21:38,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-09-24 18:21:38,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:38,031 INFO L225 Difference]: With dead ends: 1386 [2020-09-24 18:21:38,031 INFO L226 Difference]: Without dead ends: 787 [2020-09-24 18:21:38,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:38,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-24 18:21:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-24 18:21:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-24 18:21:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-24 18:21:38,153 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 147 [2020-09-24 18:21:38,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:38,154 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-24 18:21:38,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:21:38,154 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-24 18:21:38,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 18:21:38,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:38,160 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:38,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:21:38,161 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:38,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:38,162 INFO L82 PathProgramCache]: Analyzing trace with hash 345157294, now seen corresponding path program 1 times [2020-09-24 18:21:38,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:38,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385545025] [2020-09-24 18:21:38,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:38,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:41,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:42,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:43,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:43,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 18:21:43,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:21:43,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:21:43,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:43,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:43,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 18:21:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 18:21:43,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:43,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:43,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:43,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:43,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:43,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:21:43,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:43,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 18:21:43,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:43,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:43,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:43,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:21:43,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:43,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:21:43,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:21:43,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:43,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385545025] [2020-09-24 18:21:43,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:43,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:43,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621159012] [2020-09-24 18:21:43,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:43,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:43,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:43,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:43,468 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-24 18:21:45,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:45,425 INFO L93 Difference]: Finished difference Result 1753 states and 2210 transitions. [2020-09-24 18:21:45,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:45,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-24 18:21:45,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:45,436 INFO L225 Difference]: With dead ends: 1753 [2020-09-24 18:21:45,436 INFO L226 Difference]: Without dead ends: 1042 [2020-09-24 18:21:45,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-24 18:21:45,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 881. [2020-09-24 18:21:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-24 18:21:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1111 transitions. [2020-09-24 18:21:45,489 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1111 transitions. Word has length 165 [2020-09-24 18:21:45,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:45,490 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1111 transitions. [2020-09-24 18:21:45,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1111 transitions. [2020-09-24 18:21:45,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 18:21:45,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:45,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:45,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:21:45,496 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:45,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:45,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1869570329, now seen corresponding path program 1 times [2020-09-24 18:21:45,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:45,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566348477] [2020-09-24 18:21:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:45,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:45,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:45,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:46,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:50,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 18:21:50,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:21:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:21:50,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:50,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:50,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 18:21:50,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-24 18:21:50,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:50,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:50,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:50,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:50,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:50,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:50,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:50,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:50,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:50,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:50,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:21:50,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:50,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 18:21:50,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:50,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:50,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:50,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:21:50,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:50,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566348477] [2020-09-24 18:21:50,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:50,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:50,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119393687] [2020-09-24 18:21:50,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:50,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:50,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:50,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:50,846 INFO L87 Difference]: Start difference. First operand 881 states and 1111 transitions. Second operand 5 states. [2020-09-24 18:21:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:52,976 INFO L93 Difference]: Finished difference Result 2220 states and 2949 transitions. [2020-09-24 18:21:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:52,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-24 18:21:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:52,986 INFO L225 Difference]: With dead ends: 2220 [2020-09-24 18:21:52,987 INFO L226 Difference]: Without dead ends: 1361 [2020-09-24 18:21:52,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:52,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-09-24 18:21:53,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1341. [2020-09-24 18:21:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-09-24 18:21:53,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1671 transitions. [2020-09-24 18:21:53,058 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1671 transitions. Word has length 181 [2020-09-24 18:21:53,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:53,060 INFO L479 AbstractCegarLoop]: Abstraction has 1341 states and 1671 transitions. [2020-09-24 18:21:53,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:53,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1671 transitions. [2020-09-24 18:21:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-24 18:21:53,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:53,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:53,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:21:53,069 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:53,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:53,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1640166086, now seen corresponding path program 1 times [2020-09-24 18:21:53,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:53,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154240358] [2020-09-24 18:21:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:53,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:58,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-24 18:21:58,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:21:58,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 18:21:58,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-24 18:21:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-24 18:21:58,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:58,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:58,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:58,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:58,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:58,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:21:58,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:58,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:58,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:58,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:58,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:21:58,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:58,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 18:21:58,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:21:58,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:21:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:58,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154240358] [2020-09-24 18:21:58,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:58,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:58,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376620433] [2020-09-24 18:21:58,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:58,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:58,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:58,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:58,414 INFO L87 Difference]: Start difference. First operand 1341 states and 1671 transitions. Second operand 5 states. [2020-09-24 18:22:00,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:00,169 INFO L93 Difference]: Finished difference Result 3590 states and 4696 transitions. [2020-09-24 18:22:00,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:00,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-24 18:22:00,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:00,196 INFO L225 Difference]: With dead ends: 3590 [2020-09-24 18:22:00,196 INFO L226 Difference]: Without dead ends: 2271 [2020-09-24 18:22:00,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2020-09-24 18:22:00,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2249. [2020-09-24 18:22:00,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2249 states. [2020-09-24 18:22:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 2841 transitions. [2020-09-24 18:22:00,303 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 2841 transitions. Word has length 185 [2020-09-24 18:22:00,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:00,303 INFO L479 AbstractCegarLoop]: Abstraction has 2249 states and 2841 transitions. [2020-09-24 18:22:00,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:00,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 2841 transitions. [2020-09-24 18:22:00,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-24 18:22:00,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:00,315 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:00,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:22:00,316 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:00,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:00,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1032028468, now seen corresponding path program 1 times [2020-09-24 18:22:00,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:00,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532420214] [2020-09-24 18:22:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:00,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:00,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:00,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:00,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:05,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:05,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-24 18:22:05,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:22:05,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 18:22:05,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-24 18:22:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:22:05,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:05,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:05,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:05,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:05,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:22:05,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:05,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:05,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:05,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:05,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:05,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:22:05,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:05,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 18:22:05,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:22:05,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:05,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 18:22:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:05,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:05,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:05,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:22:05,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:05,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 18:22:05,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:22:05,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:22:05,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532420214] [2020-09-24 18:22:05,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:05,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:22:05,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859044989] [2020-09-24 18:22:05,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:22:05,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:05,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:22:05,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:22:05,731 INFO L87 Difference]: Start difference. First operand 2249 states and 2841 transitions. Second operand 8 states. [2020-09-24 18:22:08,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:08,431 INFO L93 Difference]: Finished difference Result 5964 states and 7932 transitions. [2020-09-24 18:22:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 18:22:08,433 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-09-24 18:22:08,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:08,453 INFO L225 Difference]: With dead ends: 5964 [2020-09-24 18:22:08,454 INFO L226 Difference]: Without dead ends: 3737 [2020-09-24 18:22:08,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:22:08,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2020-09-24 18:22:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3495. [2020-09-24 18:22:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3495 states. [2020-09-24 18:22:08,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 4454 transitions. [2020-09-24 18:22:08,568 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 4454 transitions. Word has length 225 [2020-09-24 18:22:08,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:08,569 INFO L479 AbstractCegarLoop]: Abstraction has 3495 states and 4454 transitions. [2020-09-24 18:22:08,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:22:08,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 4454 transitions. [2020-09-24 18:22:08,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-24 18:22:08,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:08,586 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:08,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:22:08,586 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:08,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:08,587 INFO L82 PathProgramCache]: Analyzing trace with hash 779062267, now seen corresponding path program 1 times [2020-09-24 18:22:08,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:08,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933314758] [2020-09-24 18:22:08,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:08,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:08,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:09,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:11,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:11,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:12,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:13,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:13,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-09-24 18:22:13,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:22:13,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-24 18:22:13,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-24 18:22:13,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-24 18:22:13,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:13,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:13,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:13,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:13,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:13,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:13,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:22:13,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:13,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:13,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:13,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:13,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:13,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:13,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:13,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:13,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:22:13,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:13,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:22:13,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:13,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:13,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:13,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:13,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:13,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 18:22:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:13,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:14,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:14,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 18:22:14,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:14,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 18:22:14,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:14,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:14,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:14,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 18:22:14,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-24 18:22:14,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933314758] [2020-09-24 18:22:14,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:14,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:14,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806954596] [2020-09-24 18:22:14,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:14,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:14,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:14,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:14,187 INFO L87 Difference]: Start difference. First operand 3495 states and 4454 transitions. Second operand 5 states. [2020-09-24 18:22:16,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:16,204 INFO L93 Difference]: Finished difference Result 7015 states and 8985 transitions. [2020-09-24 18:22:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:16,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2020-09-24 18:22:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:16,205 INFO L225 Difference]: With dead ends: 7015 [2020-09-24 18:22:16,205 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:22:16,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:16,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:22:16,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:22:16,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:22:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:22:16,224 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 274 [2020-09-24 18:22:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:16,224 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:22:16,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:16,225 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:22:16,225 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:22:16,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:22:16,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:22:17,110 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 23 [2020-09-24 18:22:17,224 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 23