/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:28:09,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:28:09,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:28:09,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:28:09,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:28:09,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:28:09,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:28:09,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:28:09,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:28:09,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:28:09,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:28:09,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:28:09,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:28:09,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:28:09,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:28:09,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:28:09,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:28:09,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:28:09,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:28:09,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:28:09,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:28:09,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:28:09,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:28:09,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:28:09,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:28:09,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:28:09,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:28:09,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:28:09,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:28:09,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:28:09,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:28:09,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:28:09,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:28:09,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:28:09,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:28:09,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:28:09,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:28:09,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:28:09,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:28:09,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:28:09,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:28:09,108 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 20:28:09,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:28:09,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:28:09,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:28:09,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:28:09,138 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:28:09,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:28:09,138 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:28:09,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:28:09,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:28:09,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:28:09,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:28:09,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:28:09,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:28:09,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:28:09,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:28:09,140 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:28:09,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:28:09,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:28:09,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:28:09,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:28:09,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:28:09,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:28:09,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:28:09,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:28:09,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:28:09,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:28:09,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:28:09,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:28:09,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:28:09,145 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:28:09,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:28:09,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:28:09,661 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:28:09,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:28:09,666 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:28:09,667 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-09-24 20:28:09,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84ce4bcee/c9da152ea0ff4599bbbf35acd45fc331/FLAG095bd48fd [2020-09-24 20:28:10,312 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:28:10,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c [2020-09-24 20:28:10,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84ce4bcee/c9da152ea0ff4599bbbf35acd45fc331/FLAG095bd48fd [2020-09-24 20:28:10,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84ce4bcee/c9da152ea0ff4599bbbf35acd45fc331 [2020-09-24 20:28:10,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:28:10,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:28:10,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:28:10,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:28:10,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:28:10,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:28:10" (1/1) ... [2020-09-24 20:28:10,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f159ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:10, skipping insertion in model container [2020-09-24 20:28:10,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:28:10" (1/1) ... [2020-09-24 20:28:10,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:28:10,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:28:11,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:28:11,022 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:28:11,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:28:11,074 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:28:11,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:11 WrapperNode [2020-09-24 20:28:11,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:28:11,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:28:11,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:28:11,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:28:11,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:11" (1/1) ... [2020-09-24 20:28:11,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:11" (1/1) ... [2020-09-24 20:28:11,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:11" (1/1) ... [2020-09-24 20:28:11,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:11" (1/1) ... [2020-09-24 20:28:11,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:11" (1/1) ... [2020-09-24 20:28:11,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:11" (1/1) ... [2020-09-24 20:28:11,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:11" (1/1) ... [2020-09-24 20:28:11,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:28:11,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:28:11,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:28:11,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:28:11,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:11" (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 20:28:11,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:28:11,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:28:11,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:28:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:28:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:28:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:28:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:28:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:28:11,659 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:28:11,659 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:28:11,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:28:11 BoogieIcfgContainer [2020-09-24 20:28:11,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:28:11,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:28:11,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:28:11,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:28:11,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:28:10" (1/3) ... [2020-09-24 20:28:11,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9f8216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:28:11, skipping insertion in model container [2020-09-24 20:28:11,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:11" (2/3) ... [2020-09-24 20:28:11,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9f8216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:28:11, skipping insertion in model container [2020-09-24 20:28:11,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:28:11" (3/3) ... [2020-09-24 20:28:11,676 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-09-24 20:28:11,688 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:28:11,699 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:28:11,722 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:28:11,755 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:28:11,755 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:28:11,755 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:28:11,755 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:28:11,755 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:28:11,755 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:28:11,756 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:28:11,756 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:28:11,780 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-09-24 20:28:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 20:28:11,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:11,791 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] [2020-09-24 20:28:11,791 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:11,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:11,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1400694048, now seen corresponding path program 1 times [2020-09-24 20:28:11,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:11,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671738659] [2020-09-24 20:28:11,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:11,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:28:12,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-24 20:28:12,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 20:28:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:28:12,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:28:12,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:12,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:28:12,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:12,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:12,251 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 20:28:12,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671738659] [2020-09-24 20:28:12,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:12,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:12,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563635777] [2020-09-24 20:28:12,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:12,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:12,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:12,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,292 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 3 states. [2020-09-24 20:28:12,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:12,367 INFO L93 Difference]: Finished difference Result 169 states and 229 transitions. [2020-09-24 20:28:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:12,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-09-24 20:28:12,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:12,386 INFO L225 Difference]: With dead ends: 169 [2020-09-24 20:28:12,387 INFO L226 Difference]: Without dead ends: 112 [2020-09-24 20:28:12,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-24 20:28:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-09-24 20:28:12,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-24 20:28:12,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 142 transitions. [2020-09-24 20:28:12,448 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 142 transitions. Word has length 49 [2020-09-24 20:28:12,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:12,449 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 142 transitions. [2020-09-24 20:28:12,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:12,449 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 142 transitions. [2020-09-24 20:28:12,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 20:28:12,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:12,452 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] [2020-09-24 20:28:12,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:28:12,452 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:12,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:12,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1290717684, now seen corresponding path program 1 times [2020-09-24 20:28:12,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:12,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31057706] [2020-09-24 20:28:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 20:28:12,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 20:28:12,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:12,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 20:28:12,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:28:12,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:12,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:12,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:12,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:12,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:12,618 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 20:28:12,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31057706] [2020-09-24 20:28:12,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:12,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:12,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870525218] [2020-09-24 20:28:12,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:12,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:12,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:12,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,623 INFO L87 Difference]: Start difference. First operand 110 states and 142 transitions. Second operand 3 states. [2020-09-24 20:28:12,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:12,651 INFO L93 Difference]: Finished difference Result 135 states and 175 transitions. [2020-09-24 20:28:12,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:12,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-09-24 20:28:12,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:12,654 INFO L225 Difference]: With dead ends: 135 [2020-09-24 20:28:12,655 INFO L226 Difference]: Without dead ends: 133 [2020-09-24 20:28:12,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-24 20:28:12,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 110. [2020-09-24 20:28:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-24 20:28:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2020-09-24 20:28:12,669 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 50 [2020-09-24 20:28:12,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:12,670 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2020-09-24 20:28:12,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2020-09-24 20:28:12,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 20:28:12,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:12,673 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] [2020-09-24 20:28:12,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:28:12,673 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:12,674 INFO L82 PathProgramCache]: Analyzing trace with hash 472087846, now seen corresponding path program 1 times [2020-09-24 20:28:12,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:12,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645937984] [2020-09-24 20:28:12,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 20:28:12,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 20:28:12,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 20:28:12,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:28:12,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:12,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:12,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:12,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:12,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:12,845 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 20:28:12,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645937984] [2020-09-24 20:28:12,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:12,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:12,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954887318] [2020-09-24 20:28:12,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:12,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:12,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:12,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,852 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. Second operand 3 states. [2020-09-24 20:28:12,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:12,917 INFO L93 Difference]: Finished difference Result 266 states and 357 transitions. [2020-09-24 20:28:12,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:12,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-09-24 20:28:12,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:12,921 INFO L225 Difference]: With dead ends: 266 [2020-09-24 20:28:12,921 INFO L226 Difference]: Without dead ends: 185 [2020-09-24 20:28:12,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-24 20:28:12,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183. [2020-09-24 20:28:12,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-09-24 20:28:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 240 transitions. [2020-09-24 20:28:12,948 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 240 transitions. Word has length 50 [2020-09-24 20:28:12,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:12,949 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 240 transitions. [2020-09-24 20:28:12,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 240 transitions. [2020-09-24 20:28:12,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:28:12,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:12,952 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] [2020-09-24 20:28:12,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:28:12,952 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:12,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:12,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1750067028, now seen corresponding path program 1 times [2020-09-24 20:28:12,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:12,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966807724] [2020-09-24 20:28:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 20:28:13,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 20:28:13,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:13,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 20:28:13,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:28:13,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:13,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:13,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:13,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,071 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 20:28:13,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966807724] [2020-09-24 20:28:13,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:13,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:13,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408530706] [2020-09-24 20:28:13,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:13,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:13,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:13,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,074 INFO L87 Difference]: Start difference. First operand 183 states and 240 transitions. Second operand 3 states. [2020-09-24 20:28:13,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:13,099 INFO L93 Difference]: Finished difference Result 479 states and 646 transitions. [2020-09-24 20:28:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:13,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-09-24 20:28:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:13,103 INFO L225 Difference]: With dead ends: 479 [2020-09-24 20:28:13,103 INFO L226 Difference]: Without dead ends: 325 [2020-09-24 20:28:13,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-24 20:28:13,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2020-09-24 20:28:13,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-24 20:28:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 426 transitions. [2020-09-24 20:28:13,127 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 426 transitions. Word has length 51 [2020-09-24 20:28:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:13,128 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 426 transitions. [2020-09-24 20:28:13,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:13,128 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 426 transitions. [2020-09-24 20:28:13,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:28:13,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:13,131 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] [2020-09-24 20:28:13,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:28:13,131 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:13,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:13,132 INFO L82 PathProgramCache]: Analyzing trace with hash -17356107, now seen corresponding path program 1 times [2020-09-24 20:28:13,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:13,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239331682] [2020-09-24 20:28:13,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 20:28:13,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 20:28:13,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:13,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 20:28:13,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:28:13,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:13,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:13,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:28:13,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:13,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:28:13,263 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 20:28:13,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239331682] [2020-09-24 20:28:13,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:13,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:13,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576032134] [2020-09-24 20:28:13,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:13,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:13,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:13,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,266 INFO L87 Difference]: Start difference. First operand 323 states and 426 transitions. Second operand 3 states. [2020-09-24 20:28:13,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:13,290 INFO L93 Difference]: Finished difference Result 399 states and 528 transitions. [2020-09-24 20:28:13,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:13,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-09-24 20:28:13,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:13,294 INFO L225 Difference]: With dead ends: 399 [2020-09-24 20:28:13,294 INFO L226 Difference]: Without dead ends: 397 [2020-09-24 20:28:13,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-09-24 20:28:13,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 323. [2020-09-24 20:28:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-24 20:28:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 422 transitions. [2020-09-24 20:28:13,313 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 422 transitions. Word has length 51 [2020-09-24 20:28:13,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:13,314 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 422 transitions. [2020-09-24 20:28:13,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 422 transitions. [2020-09-24 20:28:13,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:28:13,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:13,317 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] [2020-09-24 20:28:13,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:28:13,317 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:13,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:13,318 INFO L82 PathProgramCache]: Analyzing trace with hash 802147488, now seen corresponding path program 1 times [2020-09-24 20:28:13,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:13,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868402165] [2020-09-24 20:28:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:28:13,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 20:28:13,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 20:28:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:28:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:13,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:13,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:13,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:13,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:13,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,405 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 20:28:13,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868402165] [2020-09-24 20:28:13,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:13,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:13,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882618573] [2020-09-24 20:28:13,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:13,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:13,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:13,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,408 INFO L87 Difference]: Start difference. First operand 323 states and 422 transitions. Second operand 3 states. [2020-09-24 20:28:13,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:13,425 INFO L93 Difference]: Finished difference Result 395 states and 516 transitions. [2020-09-24 20:28:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:13,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-24 20:28:13,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:13,428 INFO L225 Difference]: With dead ends: 395 [2020-09-24 20:28:13,428 INFO L226 Difference]: Without dead ends: 393 [2020-09-24 20:28:13,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-09-24 20:28:13,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 323. [2020-09-24 20:28:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-24 20:28:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 418 transitions. [2020-09-24 20:28:13,443 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 418 transitions. Word has length 52 [2020-09-24 20:28:13,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:13,444 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 418 transitions. [2020-09-24 20:28:13,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:13,444 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 418 transitions. [2020-09-24 20:28:13,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:28:13,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:13,447 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] [2020-09-24 20:28:13,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:28:13,447 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:13,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:13,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1582250918, now seen corresponding path program 1 times [2020-09-24 20:28:13,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:13,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114716313] [2020-09-24 20:28:13,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:28:13,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 20:28:13,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:13,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 20:28:13,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:28:13,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:13,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:13,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,530 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 20:28:13,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114716313] [2020-09-24 20:28:13,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:13,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:13,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385905540] [2020-09-24 20:28:13,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:13,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:13,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:13,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,533 INFO L87 Difference]: Start difference. First operand 323 states and 418 transitions. Second operand 3 states. [2020-09-24 20:28:13,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:13,559 INFO L93 Difference]: Finished difference Result 887 states and 1164 transitions. [2020-09-24 20:28:13,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:13,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-24 20:28:13,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:13,563 INFO L225 Difference]: With dead ends: 887 [2020-09-24 20:28:13,563 INFO L226 Difference]: Without dead ends: 593 [2020-09-24 20:28:13,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-09-24 20:28:13,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-09-24 20:28:13,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-24 20:28:13,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 758 transitions. [2020-09-24 20:28:13,590 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 758 transitions. Word has length 52 [2020-09-24 20:28:13,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:13,591 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 758 transitions. [2020-09-24 20:28:13,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:13,591 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 758 transitions. [2020-09-24 20:28:13,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 20:28:13,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:13,593 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] [2020-09-24 20:28:13,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:28:13,593 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:13,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:13,594 INFO L82 PathProgramCache]: Analyzing trace with hash 436955529, now seen corresponding path program 1 times [2020-09-24 20:28:13,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:13,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147102300] [2020-09-24 20:28:13,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 20:28:13,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 20:28:13,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 20:28:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:28:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:13,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:13,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:13,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,675 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 20:28:13,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147102300] [2020-09-24 20:28:13,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:13,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:13,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142628724] [2020-09-24 20:28:13,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:13,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:13,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:13,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,679 INFO L87 Difference]: Start difference. First operand 591 states and 758 transitions. Second operand 3 states. [2020-09-24 20:28:13,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:13,707 INFO L93 Difference]: Finished difference Result 715 states and 912 transitions. [2020-09-24 20:28:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:13,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-09-24 20:28:13,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:13,712 INFO L225 Difference]: With dead ends: 715 [2020-09-24 20:28:13,713 INFO L226 Difference]: Without dead ends: 713 [2020-09-24 20:28:13,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-09-24 20:28:13,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 591. [2020-09-24 20:28:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-24 20:28:13,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 750 transitions. [2020-09-24 20:28:13,737 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 750 transitions. Word has length 53 [2020-09-24 20:28:13,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:13,737 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 750 transitions. [2020-09-24 20:28:13,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:13,738 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 750 transitions. [2020-09-24 20:28:13,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 20:28:13,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:13,739 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] [2020-09-24 20:28:13,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:28:13,740 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:13,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:13,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1804891768, now seen corresponding path program 1 times [2020-09-24 20:28:13,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:13,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826236074] [2020-09-24 20:28:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 20:28:13,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 20:28:13,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:13,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 20:28:13,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:28:13,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:13,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:13,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:13,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:13,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,823 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 20:28:13,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826236074] [2020-09-24 20:28:13,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:13,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:13,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174580074] [2020-09-24 20:28:13,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:13,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:13,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:13,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,836 INFO L87 Difference]: Start difference. First operand 591 states and 750 transitions. Second operand 3 states. [2020-09-24 20:28:13,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:13,869 INFO L93 Difference]: Finished difference Result 1667 states and 2128 transitions. [2020-09-24 20:28:13,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:13,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-09-24 20:28:13,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:13,875 INFO L225 Difference]: With dead ends: 1667 [2020-09-24 20:28:13,876 INFO L226 Difference]: Without dead ends: 1105 [2020-09-24 20:28:13,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-09-24 20:28:13,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1103. [2020-09-24 20:28:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-24 20:28:13,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1374 transitions. [2020-09-24 20:28:13,905 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1374 transitions. Word has length 53 [2020-09-24 20:28:13,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:13,905 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1374 transitions. [2020-09-24 20:28:13,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:13,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1374 transitions. [2020-09-24 20:28:13,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 20:28:13,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:13,907 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] [2020-09-24 20:28:13,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:28:13,908 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:13,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:13,908 INFO L82 PathProgramCache]: Analyzing trace with hash 2000907060, now seen corresponding path program 1 times [2020-09-24 20:28:13,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:13,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670246134] [2020-09-24 20:28:13,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:28:13,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:28:13,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:13,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 20:28:13,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:28:13,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:13,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:13,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,979 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 20:28:13,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670246134] [2020-09-24 20:28:13,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:13,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:13,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409493112] [2020-09-24 20:28:13,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:13,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:13,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:13,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,981 INFO L87 Difference]: Start difference. First operand 1103 states and 1374 transitions. Second operand 3 states. [2020-09-24 20:28:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:14,005 INFO L93 Difference]: Finished difference Result 1315 states and 1616 transitions. [2020-09-24 20:28:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:14,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-09-24 20:28:14,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:14,012 INFO L225 Difference]: With dead ends: 1315 [2020-09-24 20:28:14,012 INFO L226 Difference]: Without dead ends: 1313 [2020-09-24 20:28:14,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:14,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-09-24 20:28:14,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1103. [2020-09-24 20:28:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-24 20:28:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1358 transitions. [2020-09-24 20:28:14,043 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1358 transitions. Word has length 54 [2020-09-24 20:28:14,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:14,043 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1358 transitions. [2020-09-24 20:28:14,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:14,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1358 transitions. [2020-09-24 20:28:14,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 20:28:14,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:14,045 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] [2020-09-24 20:28:14,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:28:14,045 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:14,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:14,046 INFO L82 PathProgramCache]: Analyzing trace with hash -116823154, now seen corresponding path program 1 times [2020-09-24 20:28:14,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:14,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880990807] [2020-09-24 20:28:14,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:14,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:14,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:14,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:28:14,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:14,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:28:14,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 20:28:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:28:14,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:14,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:14,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:14,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:14,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:14,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:14,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:28:14,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:14,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:14,121 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 20:28:14,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880990807] [2020-09-24 20:28:14,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:14,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:14,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669880316] [2020-09-24 20:28:14,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:14,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:14,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:14,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:14,124 INFO L87 Difference]: Start difference. First operand 1103 states and 1358 transitions. Second operand 3 states. [2020-09-24 20:28:14,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:14,161 INFO L93 Difference]: Finished difference Result 3153 states and 3887 transitions. [2020-09-24 20:28:14,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:14,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-09-24 20:28:14,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:14,166 INFO L225 Difference]: With dead ends: 3153 [2020-09-24 20:28:14,167 INFO L226 Difference]: Without dead ends: 1103 [2020-09-24 20:28:14,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:14,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-09-24 20:28:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1103. [2020-09-24 20:28:14,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-24 20:28:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1294 transitions. [2020-09-24 20:28:14,197 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1294 transitions. Word has length 54 [2020-09-24 20:28:14,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:14,198 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1294 transitions. [2020-09-24 20:28:14,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:14,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1294 transitions. [2020-09-24 20:28:14,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 20:28:14,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:14,200 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] [2020-09-24 20:28:14,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:28:14,200 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:14,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:14,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1056202659, now seen corresponding path program 1 times [2020-09-24 20:28:14,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:14,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528788179] [2020-09-24 20:28:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:14,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:14,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:14,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 20:28:14,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:14,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:28:14,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 20:28:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:28:14,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:14,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:14,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:14,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:14,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:14,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:14,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:14,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:14,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:14,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:14,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:14,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:14,272 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 20:28:14,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528788179] [2020-09-24 20:28:14,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:14,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:14,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581032549] [2020-09-24 20:28:14,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:14,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:14,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:14,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:14,275 INFO L87 Difference]: Start difference. First operand 1103 states and 1294 transitions. Second operand 3 states. [2020-09-24 20:28:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:14,291 INFO L93 Difference]: Finished difference Result 1103 states and 1294 transitions. [2020-09-24 20:28:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:14,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-09-24 20:28:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:14,292 INFO L225 Difference]: With dead ends: 1103 [2020-09-24 20:28:14,292 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:28:14,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:14,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:28:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:28:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:28:14,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:28:14,296 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-09-24 20:28:14,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:14,296 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:28:14,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:14,296 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:28:14,296 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:28:14,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 20:28:14,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:28:14,333 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 20:28:14,333 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:28:14,333 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:28:14,334 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 20:28:14,334 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:28:14,334 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:28:14,334 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-09-24 20:28:14,334 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-09-24 20:28:14,334 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 20:28:14,334 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-09-24 20:28:14,334 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-24 20:28:14,334 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-09-24 20:28:14,335 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 20:28:14,335 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-09-24 20:28:14,335 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-24 20:28:14,335 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-09-24 20:28:14,335 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 20:28:14,335 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 20:28:14,335 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 20:28:14,335 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-09-24 20:28:14,335 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-09-24 20:28:14,335 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-09-24 20:28:14,335 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-09-24 20:28:14,336 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 20:28:14,336 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-09-24 20:28:14,336 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 20:28:14,336 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-24 20:28:14,336 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-24 20:28:14,336 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-09-24 20:28:14,336 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 20:28:14,337 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-09-24 20:28:14,337 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-09-24 20:28:14,337 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-24 20:28:14,337 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-09-24 20:28:14,337 INFO L268 CegarLoopResult]: For program point L63(line 63) no Hoare annotation was computed. [2020-09-24 20:28:14,337 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-09-24 20:28:14,338 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-09-24 20:28:14,338 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-24 20:28:14,338 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 20:28:14,338 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-24 20:28:14,338 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-09-24 20:28:14,338 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 20:28:14,338 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 20:28:14,339 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-09-24 20:28:14,339 INFO L268 CegarLoopResult]: For program point L89(line 89) no Hoare annotation was computed. [2020-09-24 20:28:14,339 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 20:28:14,339 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 20:28:14,339 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 20:28:14,339 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-09-24 20:28:14,339 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-09-24 20:28:14,340 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 20:28:14,340 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 20:28:14,340 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-09-24 20:28:14,340 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-09-24 20:28:14,340 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 20:28:14,340 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-09-24 20:28:14,340 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 20:28:14,340 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-24 20:28:14,341 INFO L268 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-09-24 20:28:14,341 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-09-24 20:28:14,341 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 20:28:14,341 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-09-24 20:28:14,341 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-24 20:28:14,341 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-09-24 20:28:14,341 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-24 20:28:14,342 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 20:28:14,342 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 20:28:14,342 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 20:28:14,342 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-09-24 20:28:14,342 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 20:28:14,342 INFO L268 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-09-24 20:28:14,342 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-09-24 20:28:14,342 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-09-24 20:28:14,343 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-24 20:28:14,343 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 20:28:14,343 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 20:28:14,343 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 20:28:14,343 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 20:28:14,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:28:14 BoogieIcfgContainer [2020-09-24 20:28:14,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:28:14,361 INFO L168 Benchmark]: Toolchain (without parser) took 3641.72 ms. Allocated memory was 138.4 MB in the beginning and 250.6 MB in the end (delta: 112.2 MB). Free memory was 100.1 MB in the beginning and 116.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 96.0 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:14,363 INFO L168 Benchmark]: CDTParser took 1.12 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 20:28:14,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.96 ms. Allocated memory is still 138.4 MB. Free memory was 99.4 MB in the beginning and 89.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:14,364 INFO L168 Benchmark]: Boogie Preprocessor took 137.11 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 89.4 MB in the beginning and 179.9 MB in the end (delta: -90.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:14,365 INFO L168 Benchmark]: RCFGBuilder took 451.69 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 161.0 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:14,366 INFO L168 Benchmark]: TraceAbstraction took 2690.81 ms. Allocated memory was 201.9 MB in the beginning and 250.6 MB in the end (delta: 48.8 MB). Free memory was 160.4 MB in the beginning and 116.3 MB in the end (delta: 44.1 MB). Peak memory consumption was 92.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:14,370 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.12 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 345.96 ms. Allocated memory is still 138.4 MB. Free memory was 99.4 MB in the beginning and 89.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.11 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 89.4 MB in the beginning and 179.9 MB in the end (delta: -90.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.69 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 161.0 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2690.81 ms. Allocated memory was 201.9 MB in the beginning and 250.6 MB in the end (delta: 48.8 MB). Free memory was 160.4 MB in the beginning and 116.3 MB in the end (delta: 44.1 MB). Peak memory consumption was 92.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1351 SDtfs, 477 SDslu, 950 SDs, 0 SdLazy, 59 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1103occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 509 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 73 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 624 NumberOfCodeBlocks, 624 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 612 ConstructedInterpolants, 0 QuantifiedInterpolants, 39212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...