/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_7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:28:11,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:28:11,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:28:11,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:28:11,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:28:11,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:28:11,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:28:11,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:28:11,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:28:11,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:28:11,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:28:11,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:28:11,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:28:11,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:28:11,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:28:11,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:28:11,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:28:11,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:28:11,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:28:11,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:28:11,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:28:11,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:28:11,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:28:11,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:28:11,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:28:11,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:28:11,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:28:11,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:28:11,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:28:11,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:28:11,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:28:11,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:28:11,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:28:11,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:28:11,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:28:11,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:28:11,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:28:11,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:28:11,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:28:11,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:28:11,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:28:11,365 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 20:28:11,408 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:28:11,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:28:11,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:28:11,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:28:11,411 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:28:11,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:28:11,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:28:11,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:28:11,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:28:11,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:28:11,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:28:11,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:28:11,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:28:11,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:28:11,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:28:11,415 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:28:11,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:28:11,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:28:11,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:28:11,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:28:11,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:28:11,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:28:11,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:28:11,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:28:11,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:28:11,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:28:11,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:28:11,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:28:11,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:28:11,418 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 20:28:11,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:28:11,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:28:11,897 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:28:11,900 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:28:11,900 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:28:11,901 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_7.c [2020-09-24 20:28:11,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62e77fc3f/85abdcdca12543da9f978411ca935429/FLAG280414ee0 [2020-09-24 20:28:12,525 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:28:12,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_7.c [2020-09-24 20:28:12,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62e77fc3f/85abdcdca12543da9f978411ca935429/FLAG280414ee0 [2020-09-24 20:28:12,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62e77fc3f/85abdcdca12543da9f978411ca935429 [2020-09-24 20:28:12,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:28:12,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:28:12,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:28:12,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:28:12,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:28:12,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:28:12" (1/1) ... [2020-09-24 20:28:12,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:12, skipping insertion in model container [2020-09-24 20:28:12,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:28:12" (1/1) ... [2020-09-24 20:28:12,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:28:12,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:28:13,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:28:13,161 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:28:13,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:28:13,203 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:28:13,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:13 WrapperNode [2020-09-24 20:28:13,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:28:13,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:28:13,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:28:13,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:28:13,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:13" (1/1) ... [2020-09-24 20:28:13,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:13" (1/1) ... [2020-09-24 20:28:13,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:13" (1/1) ... [2020-09-24 20:28:13,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:13" (1/1) ... [2020-09-24 20:28:13,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:13" (1/1) ... [2020-09-24 20:28:13,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:13" (1/1) ... [2020-09-24 20:28:13,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:13" (1/1) ... [2020-09-24 20:28:13,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:28:13,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:28:13,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:28:13,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:28:13,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:13" (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 20:28:13,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:28:13,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:28:13,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:28:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:28:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:28:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:28:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:28:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:28:13,801 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:28:13,801 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:28:13,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:28:13 BoogieIcfgContainer [2020-09-24 20:28:13,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:28:13,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:28:13,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:28:13,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:28:13,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:28:12" (1/3) ... [2020-09-24 20:28:13,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19552ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:28:13, skipping insertion in model container [2020-09-24 20:28:13,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:13" (2/3) ... [2020-09-24 20:28:13,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19552ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:28:13, skipping insertion in model container [2020-09-24 20:28:13,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:28:13" (3/3) ... [2020-09-24 20:28:13,816 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2020-09-24 20:28:13,826 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:28:13,836 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:28:13,857 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:28:13,892 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:28:13,892 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:28:13,892 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:28:13,892 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:28:13,892 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:28:13,893 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:28:13,893 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:28:13,893 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:28:13,920 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-24 20:28:13,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 20:28:13,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:13,931 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 20:28:13,932 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:13,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:13,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1826051656, now seen corresponding path program 1 times [2020-09-24 20:28:13,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:13,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783055109] [2020-09-24 20:28:13,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:14,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:14,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:14,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 20:28:14,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:14,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-24 20:28:14,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 20:28:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:28:14,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 20:28:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:14,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:14,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:14,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:14,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:28:14,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:14,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:14,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:14,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:28:14,466 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 20:28:14,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783055109] [2020-09-24 20:28:14,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:14,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:14,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678403696] [2020-09-24 20:28:14,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:14,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:14,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:14,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:14,501 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2020-09-24 20:28:14,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:14,579 INFO L93 Difference]: Finished difference Result 191 states and 260 transitions. [2020-09-24 20:28:14,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:14,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-09-24 20:28:14,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:14,601 INFO L225 Difference]: With dead ends: 191 [2020-09-24 20:28:14,601 INFO L226 Difference]: Without dead ends: 128 [2020-09-24 20:28:14,606 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 20:28:14,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-24 20:28:14,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2020-09-24 20:28:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-24 20:28:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 164 transitions. [2020-09-24 20:28:14,676 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 164 transitions. Word has length 55 [2020-09-24 20:28:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:14,677 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 164 transitions. [2020-09-24 20:28:14,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 164 transitions. [2020-09-24 20:28:14,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 20:28:14,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:14,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:14,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:28:14,681 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:14,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:14,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1965492109, now seen corresponding path program 1 times [2020-09-24 20:28:14,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:14,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108648938] [2020-09-24 20:28:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:14,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:14,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:14,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 20:28:14,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:14,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 20:28:14,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 20:28:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:28:14,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:14,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:14,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:14,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:14,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:14,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:14,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:14,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:14,905 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 20:28:14,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108648938] [2020-09-24 20:28:14,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:14,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:14,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817327427] [2020-09-24 20:28:14,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:14,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:14,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:14,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:14,910 INFO L87 Difference]: Start difference. First operand 126 states and 164 transitions. Second operand 3 states. [2020-09-24 20:28:14,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:14,939 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2020-09-24 20:28:14,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:14,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-09-24 20:28:14,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:14,944 INFO L225 Difference]: With dead ends: 154 [2020-09-24 20:28:14,945 INFO L226 Difference]: Without dead ends: 152 [2020-09-24 20:28:14,946 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 20:28:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-24 20:28:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 126. [2020-09-24 20:28:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-24 20:28:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 163 transitions. [2020-09-24 20:28:14,967 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 163 transitions. Word has length 56 [2020-09-24 20:28:14,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:14,968 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 163 transitions. [2020-09-24 20:28:14,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 163 transitions. [2020-09-24 20:28:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 20:28:14,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:14,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:14,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:28:14,971 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:14,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:14,972 INFO L82 PathProgramCache]: Analyzing trace with hash 773271458, now seen corresponding path program 1 times [2020-09-24 20:28:14,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:14,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332653224] [2020-09-24 20:28:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 20:28:15,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 20:28:15,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:15,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 20:28:15,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:28:15,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:15,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:15,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:28:15,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:15,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:15,128 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 20:28:15,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332653224] [2020-09-24 20:28:15,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:15,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:15,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65902559] [2020-09-24 20:28:15,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:15,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:15,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:15,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:15,131 INFO L87 Difference]: Start difference. First operand 126 states and 163 transitions. Second operand 3 states. [2020-09-24 20:28:15,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:15,156 INFO L93 Difference]: Finished difference Result 306 states and 415 transitions. [2020-09-24 20:28:15,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:15,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-09-24 20:28:15,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:15,161 INFO L225 Difference]: With dead ends: 306 [2020-09-24 20:28:15,162 INFO L226 Difference]: Without dead ends: 213 [2020-09-24 20:28:15,163 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 20:28:15,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-24 20:28:15,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2020-09-24 20:28:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-24 20:28:15,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 280 transitions. [2020-09-24 20:28:15,181 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 280 transitions. Word has length 56 [2020-09-24 20:28:15,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:15,182 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 280 transitions. [2020-09-24 20:28:15,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:15,182 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 280 transitions. [2020-09-24 20:28:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 20:28:15,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:15,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:15,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:28:15,185 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:15,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:15,185 INFO L82 PathProgramCache]: Analyzing trace with hash -610540190, now seen corresponding path program 1 times [2020-09-24 20:28:15,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:15,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965684260] [2020-09-24 20:28:15,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 20:28:15,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 20:28:15,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:15,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 20:28:15,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:28:15,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:15,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:15,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:28:15,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:15,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:15,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:15,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:15,323 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 20:28:15,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965684260] [2020-09-24 20:28:15,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:15,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:15,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670151901] [2020-09-24 20:28:15,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:15,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:15,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:15,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:15,329 INFO L87 Difference]: Start difference. First operand 211 states and 280 transitions. Second operand 3 states. [2020-09-24 20:28:15,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:15,361 INFO L93 Difference]: Finished difference Result 259 states and 346 transitions. [2020-09-24 20:28:15,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:15,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-09-24 20:28:15,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:15,368 INFO L225 Difference]: With dead ends: 259 [2020-09-24 20:28:15,368 INFO L226 Difference]: Without dead ends: 257 [2020-09-24 20:28:15,369 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 20:28:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-24 20:28:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 211. [2020-09-24 20:28:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-24 20:28:15,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 278 transitions. [2020-09-24 20:28:15,394 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 278 transitions. Word has length 57 [2020-09-24 20:28:15,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:15,398 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 278 transitions. [2020-09-24 20:28:15,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:15,398 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 278 transitions. [2020-09-24 20:28:15,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 20:28:15,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:15,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:15,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:28:15,404 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:15,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:15,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1798143236, now seen corresponding path program 1 times [2020-09-24 20:28:15,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:15,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887204493] [2020-09-24 20:28:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 20:28:15,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 20:28:15,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:15,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 20:28:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:28:15,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:15,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:15,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:28:15,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:15,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:15,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:15,560 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 20:28:15,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887204493] [2020-09-24 20:28:15,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:15,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:15,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099139977] [2020-09-24 20:28:15,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:15,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:15,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:15,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:15,565 INFO L87 Difference]: Start difference. First operand 211 states and 278 transitions. Second operand 3 states. [2020-09-24 20:28:15,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:15,594 INFO L93 Difference]: Finished difference Result 555 states and 752 transitions. [2020-09-24 20:28:15,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:15,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-09-24 20:28:15,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:15,598 INFO L225 Difference]: With dead ends: 555 [2020-09-24 20:28:15,598 INFO L226 Difference]: Without dead ends: 377 [2020-09-24 20:28:15,601 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 20:28:15,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-09-24 20:28:15,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 375. [2020-09-24 20:28:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-09-24 20:28:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 498 transitions. [2020-09-24 20:28:15,641 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 498 transitions. Word has length 57 [2020-09-24 20:28:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:15,642 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 498 transitions. [2020-09-24 20:28:15,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 498 transitions. [2020-09-24 20:28:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:28:15,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:15,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:15,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:28:15,652 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:15,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1136837537, now seen corresponding path program 1 times [2020-09-24 20:28:15,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:15,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363014260] [2020-09-24 20:28:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:28:15,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 20:28:15,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-24 20:28:15,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:28:15,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:15,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:15,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:15,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:15,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:15,747 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 20:28:15,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363014260] [2020-09-24 20:28:15,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:15,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:15,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712069807] [2020-09-24 20:28:15,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:15,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:15,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:15,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:15,749 INFO L87 Difference]: Start difference. First operand 375 states and 498 transitions. Second operand 3 states. [2020-09-24 20:28:15,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:15,775 INFO L93 Difference]: Finished difference Result 459 states and 612 transitions. [2020-09-24 20:28:15,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:15,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-09-24 20:28:15,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:15,779 INFO L225 Difference]: With dead ends: 459 [2020-09-24 20:28:15,779 INFO L226 Difference]: Without dead ends: 457 [2020-09-24 20:28:15,780 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 20:28:15,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-09-24 20:28:15,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 375. [2020-09-24 20:28:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-09-24 20:28:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 494 transitions. [2020-09-24 20:28:15,794 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 494 transitions. Word has length 58 [2020-09-24 20:28:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:15,794 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 494 transitions. [2020-09-24 20:28:15,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 494 transitions. [2020-09-24 20:28:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:28:15,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:15,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:15,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:28:15,797 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:15,797 INFO L82 PathProgramCache]: Analyzing trace with hash 92380246, now seen corresponding path program 1 times [2020-09-24 20:28:15,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:15,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029133914] [2020-09-24 20:28:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:28:15,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 20:28:15,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-24 20:28:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:28:15,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:15,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:15,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:15,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:15,890 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 20:28:15,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029133914] [2020-09-24 20:28:15,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:15,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:15,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070453114] [2020-09-24 20:28:15,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:15,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:15,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:15,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:15,893 INFO L87 Difference]: Start difference. First operand 375 states and 494 transitions. Second operand 3 states. [2020-09-24 20:28:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:15,920 INFO L93 Difference]: Finished difference Result 1035 states and 1384 transitions. [2020-09-24 20:28:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:15,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-09-24 20:28:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:15,925 INFO L225 Difference]: With dead ends: 1035 [2020-09-24 20:28:15,926 INFO L226 Difference]: Without dead ends: 693 [2020-09-24 20:28:15,928 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 20:28:15,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-09-24 20:28:15,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2020-09-24 20:28:15,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-09-24 20:28:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 906 transitions. [2020-09-24 20:28:15,953 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 906 transitions. Word has length 58 [2020-09-24 20:28:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:15,954 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 906 transitions. [2020-09-24 20:28:15,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 906 transitions. [2020-09-24 20:28:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 20:28:15,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:15,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:15,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:28:15,957 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:15,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:15,957 INFO L82 PathProgramCache]: Analyzing trace with hash -529027402, now seen corresponding path program 1 times [2020-09-24 20:28:15,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:15,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53916883] [2020-09-24 20:28:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 20:28:16,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 20:28:16,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 20:28:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:28:16,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:16,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:16,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:16,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,061 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 20:28:16,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53916883] [2020-09-24 20:28:16,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:16,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:16,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151526068] [2020-09-24 20:28:16,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:16,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:16,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:16,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,064 INFO L87 Difference]: Start difference. First operand 691 states and 906 transitions. Second operand 3 states. [2020-09-24 20:28:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:16,086 INFO L93 Difference]: Finished difference Result 839 states and 1100 transitions. [2020-09-24 20:28:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:16,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-09-24 20:28:16,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:16,091 INFO L225 Difference]: With dead ends: 839 [2020-09-24 20:28:16,092 INFO L226 Difference]: Without dead ends: 837 [2020-09-24 20:28:16,092 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 20:28:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-09-24 20:28:16,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 691. [2020-09-24 20:28:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-09-24 20:28:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 898 transitions. [2020-09-24 20:28:16,112 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 898 transitions. Word has length 59 [2020-09-24 20:28:16,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:16,113 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 898 transitions. [2020-09-24 20:28:16,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:16,113 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 898 transitions. [2020-09-24 20:28:16,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 20:28:16,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:16,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:16,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:28:16,115 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:16,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:16,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1430933584, now seen corresponding path program 1 times [2020-09-24 20:28:16,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:16,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769556668] [2020-09-24 20:28:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 20:28:16,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 20:28:16,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 20:28:16,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:28:16,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:16,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:16,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:16,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,193 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 20:28:16,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769556668] [2020-09-24 20:28:16,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:16,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:16,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513934146] [2020-09-24 20:28:16,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:16,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:16,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:16,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,196 INFO L87 Difference]: Start difference. First operand 691 states and 898 transitions. Second operand 3 states. [2020-09-24 20:28:16,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:16,226 INFO L93 Difference]: Finished difference Result 1959 states and 2564 transitions. [2020-09-24 20:28:16,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:16,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-09-24 20:28:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:16,233 INFO L225 Difference]: With dead ends: 1959 [2020-09-24 20:28:16,234 INFO L226 Difference]: Without dead ends: 1301 [2020-09-24 20:28:16,236 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 20:28:16,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2020-09-24 20:28:16,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1299. [2020-09-24 20:28:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-09-24 20:28:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1666 transitions. [2020-09-24 20:28:16,270 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1666 transitions. Word has length 59 [2020-09-24 20:28:16,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:16,270 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1666 transitions. [2020-09-24 20:28:16,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:16,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1666 transitions. [2020-09-24 20:28:16,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 20:28:16,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:16,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:16,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:28:16,272 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:16,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:16,273 INFO L82 PathProgramCache]: Analyzing trace with hash -631232587, now seen corresponding path program 1 times [2020-09-24 20:28:16,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:16,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131799723] [2020-09-24 20:28:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 20:28:16,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 20:28:16,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 20:28:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:28:16,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:16,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:16,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:16,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:16,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:16,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,350 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 20:28:16,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131799723] [2020-09-24 20:28:16,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:16,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:16,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798147925] [2020-09-24 20:28:16,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:16,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:16,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:16,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,353 INFO L87 Difference]: Start difference. First operand 1299 states and 1666 transitions. Second operand 3 states. [2020-09-24 20:28:16,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:16,378 INFO L93 Difference]: Finished difference Result 1559 states and 1988 transitions. [2020-09-24 20:28:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:16,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-09-24 20:28:16,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:16,386 INFO L225 Difference]: With dead ends: 1559 [2020-09-24 20:28:16,387 INFO L226 Difference]: Without dead ends: 1557 [2020-09-24 20:28:16,388 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 20:28:16,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2020-09-24 20:28:16,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1299. [2020-09-24 20:28:16,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-09-24 20:28:16,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1650 transitions. [2020-09-24 20:28:16,425 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1650 transitions. Word has length 60 [2020-09-24 20:28:16,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:16,425 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1650 transitions. [2020-09-24 20:28:16,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:16,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1650 transitions. [2020-09-24 20:28:16,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 20:28:16,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:16,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:16,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:28:16,428 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:16,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:16,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1409021686, now seen corresponding path program 1 times [2020-09-24 20:28:16,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:16,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830971390] [2020-09-24 20:28:16,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 20:28:16,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 20:28:16,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 20:28:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:28:16,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:16,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:16,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:16,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,509 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 20:28:16,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830971390] [2020-09-24 20:28:16,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:16,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:16,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350918138] [2020-09-24 20:28:16,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:16,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:16,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:16,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,511 INFO L87 Difference]: Start difference. First operand 1299 states and 1650 transitions. Second operand 3 states. [2020-09-24 20:28:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:16,552 INFO L93 Difference]: Finished difference Result 3735 states and 4756 transitions. [2020-09-24 20:28:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:16,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-09-24 20:28:16,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:16,564 INFO L225 Difference]: With dead ends: 3735 [2020-09-24 20:28:16,564 INFO L226 Difference]: Without dead ends: 2469 [2020-09-24 20:28:16,567 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 20:28:16,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-09-24 20:28:16,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2020-09-24 20:28:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2467 states. [2020-09-24 20:28:16,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3074 transitions. [2020-09-24 20:28:16,644 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3074 transitions. Word has length 60 [2020-09-24 20:28:16,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:16,645 INFO L479 AbstractCegarLoop]: Abstraction has 2467 states and 3074 transitions. [2020-09-24 20:28:16,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:16,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3074 transitions. [2020-09-24 20:28:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 20:28:16,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:16,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:16,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:28:16,648 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:16,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:16,648 INFO L82 PathProgramCache]: Analyzing trace with hash -729752476, now seen corresponding path program 1 times [2020-09-24 20:28:16,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:16,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977296517] [2020-09-24 20:28:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:28:16,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 20:28:16,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 20:28:16,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:28:16,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:16,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:16,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,727 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 20:28:16,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977296517] [2020-09-24 20:28:16,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:16,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:16,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817171951] [2020-09-24 20:28:16,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:16,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:16,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:16,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,729 INFO L87 Difference]: Start difference. First operand 2467 states and 3074 transitions. Second operand 3 states. [2020-09-24 20:28:16,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:16,792 INFO L93 Difference]: Finished difference Result 7143 states and 8900 transitions. [2020-09-24 20:28:16,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:16,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-09-24 20:28:16,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:16,808 INFO L225 Difference]: With dead ends: 7143 [2020-09-24 20:28:16,809 INFO L226 Difference]: Without dead ends: 3637 [2020-09-24 20:28:16,815 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 20:28:16,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2020-09-24 20:28:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3635. [2020-09-24 20:28:16,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3635 states. [2020-09-24 20:28:16,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 4370 transitions. [2020-09-24 20:28:16,905 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 4370 transitions. Word has length 61 [2020-09-24 20:28:16,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:16,905 INFO L479 AbstractCegarLoop]: Abstraction has 3635 states and 4370 transitions. [2020-09-24 20:28:16,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:16,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 4370 transitions. [2020-09-24 20:28:16,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 20:28:16,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:16,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:16,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 20:28:16,909 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:16,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:16,909 INFO L82 PathProgramCache]: Analyzing trace with hash 495374346, now seen corresponding path program 1 times [2020-09-24 20:28:16,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:16,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662824133] [2020-09-24 20:28:16,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:28:16,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 20:28:16,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 20:28:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:28:16,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:16,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:16,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:16,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:16,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:16,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,988 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 20:28:16,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662824133] [2020-09-24 20:28:16,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:16,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:16,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927581692] [2020-09-24 20:28:16,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:16,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:16,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:16,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,991 INFO L87 Difference]: Start difference. First operand 3635 states and 4370 transitions. Second operand 3 states. [2020-09-24 20:28:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:17,034 INFO L93 Difference]: Finished difference Result 4087 states and 4852 transitions. [2020-09-24 20:28:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:17,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-09-24 20:28:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:17,051 INFO L225 Difference]: With dead ends: 4087 [2020-09-24 20:28:17,051 INFO L226 Difference]: Without dead ends: 2917 [2020-09-24 20:28:17,055 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 20:28:17,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-09-24 20:28:17,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2467. [2020-09-24 20:28:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2467 states. [2020-09-24 20:28:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 2914 transitions. [2020-09-24 20:28:17,153 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 2914 transitions. Word has length 61 [2020-09-24 20:28:17,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:17,154 INFO L479 AbstractCegarLoop]: Abstraction has 2467 states and 2914 transitions. [2020-09-24 20:28:17,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:17,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 2914 transitions. [2020-09-24 20:28:17,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 20:28:17,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:17,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:17,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 20:28:17,158 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:17,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:17,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1060451273, now seen corresponding path program 1 times [2020-09-24 20:28:17,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:17,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361255245] [2020-09-24 20:28:17,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:28:17,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:17,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 20:28:17,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:17,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-24 20:28:17,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:28:17,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:17,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:17,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:17,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:17,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,237 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 20:28:17,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361255245] [2020-09-24 20:28:17,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:17,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:17,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554265593] [2020-09-24 20:28:17,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:17,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:17,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:17,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:17,239 INFO L87 Difference]: Start difference. First operand 2467 states and 2914 transitions. Second operand 3 states. [2020-09-24 20:28:17,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:17,264 INFO L93 Difference]: Finished difference Result 2467 states and 2914 transitions. [2020-09-24 20:28:17,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:17,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-09-24 20:28:17,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:17,265 INFO L225 Difference]: With dead ends: 2467 [2020-09-24 20:28:17,265 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:28:17,269 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 20:28:17,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:28:17,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:28:17,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:28:17,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:28:17,271 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-09-24 20:28:17,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:17,271 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:28:17,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:17,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:28:17,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:28:17,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 20:28:17,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:28:17,316 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 20:28:17,316 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:28:17,316 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:28:17,316 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 20:28:17,316 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:28:17,316 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:28:17,317 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-09-24 20:28:17,317 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-24 20:28:17,317 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 121) no Hoare annotation was computed. [2020-09-24 20:28:17,317 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-24 20:28:17,317 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 20:28:17,317 INFO L268 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-09-24 20:28:17,317 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 20:28:17,317 INFO L268 CegarLoopResult]: For program point L86-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 20:28:17,318 INFO L271 CegarLoopResult]: At program point L111-1(lines 30 116) the Hoare annotation is: true [2020-09-24 20:28:17,318 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-24 20:28:17,318 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 20:28:17,318 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 20:28:17,318 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 20:28:17,318 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-09-24 20:28:17,318 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 20:28:17,319 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-09-24 20:28:17,319 INFO L268 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-09-24 20:28:17,319 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 20:28:17,319 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 20:28:17,319 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-24 20:28:17,319 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-09-24 20:28:17,319 INFO L264 CegarLoopResult]: At program point L112-1(lines 5 121) the Hoare annotation is: false [2020-09-24 20:28:17,319 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 20:28:17,319 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 121) no Hoare annotation was computed. [2020-09-24 20:28:17,320 INFO L268 CegarLoopResult]: For program point L71-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 20:28:17,320 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 119) no Hoare annotation was computed. [2020-09-24 20:28:17,320 INFO L268 CegarLoopResult]: For program point L96-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 20:28:17,320 INFO L268 CegarLoopResult]: For program point L63-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 20:28:17,320 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 121) the Hoare annotation is: true [2020-09-24 20:28:17,320 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-09-24 20:28:17,321 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 20:28:17,321 INFO L268 CegarLoopResult]: For program point L55-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 20:28:17,321 INFO L268 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-09-24 20:28:17,321 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-24 20:28:17,321 INFO L268 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2020-09-24 20:28:17,321 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-24 20:28:17,321 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 20:28:17,321 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 20:28:17,322 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-09-24 20:28:17,322 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-09-24 20:28:17,322 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 20:28:17,322 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-24 20:28:17,322 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-24 20:28:17,322 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-24 20:28:17,322 INFO L268 CegarLoopResult]: For program point L81-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 20:28:17,323 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 20:28:17,323 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 20:28:17,323 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 20:28:17,323 INFO L268 CegarLoopResult]: For program point L106-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 20:28:17,323 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 20:28:17,323 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-09-24 20:28:17,323 INFO L268 CegarLoopResult]: For program point L32(lines 32 34) no Hoare annotation was computed. [2020-09-24 20:28:17,323 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 20:28:17,324 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 20:28:17,324 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 20:28:17,324 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-09-24 20:28:17,324 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 20:28:17,324 INFO L268 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2020-09-24 20:28:17,324 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 20:28:17,324 INFO L268 CegarLoopResult]: For program point L91-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 20:28:17,325 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 20:28:17,325 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-24 20:28:17,325 INFO L268 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-09-24 20:28:17,325 INFO L268 CegarLoopResult]: For program point L75-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 20:28:17,325 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 20:28:17,325 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 20:28:17,325 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 20:28:17,326 INFO L268 CegarLoopResult]: For program point L67-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 20:28:17,326 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-09-24 20:28:17,326 INFO L268 CegarLoopResult]: For program point L59-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 20:28:17,326 INFO L271 CegarLoopResult]: At program point L117(lines 5 121) the Hoare annotation is: true [2020-09-24 20:28:17,326 INFO L268 CegarLoopResult]: For program point L51(lines 51 53) no Hoare annotation was computed. [2020-09-24 20:28:17,326 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 20:28:17,326 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 20:28:17,327 INFO L268 CegarLoopResult]: For program point L51-2(lines 30 116) no Hoare annotation was computed. [2020-09-24 20:28:17,327 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 20:28:17,327 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-09-24 20:28:17,327 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-24 20:28:17,327 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 20:28:17,327 INFO L268 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2020-09-24 20:28:17,327 INFO L268 CegarLoopResult]: For program point L101-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 20:28:17,327 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 20:28:17,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:28:17 BoogieIcfgContainer [2020-09-24 20:28:17,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:28:17,352 INFO L168 Benchmark]: Toolchain (without parser) took 4471.66 ms. Allocated memory was 147.8 MB in the beginning and 280.5 MB in the end (delta: 132.6 MB). Free memory was 104.1 MB in the beginning and 192.2 MB in the end (delta: -88.2 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:17,353 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 20:28:17,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.54 ms. Allocated memory is still 147.8 MB. Free memory was 103.4 MB in the beginning and 92.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:17,365 INFO L168 Benchmark]: Boogie Preprocessor took 128.74 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 92.9 MB in the beginning and 182.6 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:17,365 INFO L168 Benchmark]: RCFGBuilder took 473.34 ms. Allocated memory is still 204.5 MB. Free memory was 182.6 MB in the beginning and 162.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:17,366 INFO L168 Benchmark]: TraceAbstraction took 3536.83 ms. Allocated memory was 204.5 MB in the beginning and 280.5 MB in the end (delta: 76.0 MB). Free memory was 161.8 MB in the beginning and 192.2 MB in the end (delta: -30.4 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:17,373 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.54 ms. Allocated memory is still 147.8 MB. Free memory was 103.4 MB in the beginning and 92.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.74 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 92.9 MB in the beginning and 182.6 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 473.34 ms. Allocated memory is still 204.5 MB. Free memory was 182.6 MB in the beginning and 162.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3536.83 ms. Allocated memory was 204.5 MB in the beginning and 280.5 MB in the end (delta: 76.0 MB). Free memory was 161.8 MB in the beginning and 192.2 MB in the end (delta: -30.4 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 119]: 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: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1813 SDtfs, 648 SDslu, 1281 SDs, 0 SdLazy, 69 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3635occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 1022 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 137 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, 1.5s InterpolantComputationTime, 819 NumberOfCodeBlocks, 819 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 805 ConstructedInterpolants, 0 QuantifiedInterpolants, 58429 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...