/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:28:16,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:28:16,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:28:16,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:28:16,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:28:16,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:28:16,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:28:16,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:28:16,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:28:16,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:28:16,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:28:16,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:28:16,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:28:16,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:28:16,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:28:16,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:28:16,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:28:16,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:28:16,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:28:16,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:28:16,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:28:16,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:28:16,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:28:16,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:28:16,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:28:16,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:28:16,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:28:16,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:28:16,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:28:16,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:28:16,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:28:16,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:28:16,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:28:16,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:28:16,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:28:16,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:28:16,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:28:16,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:28:16,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:28:16,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:28:16,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:28:16,138 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:28:16,164 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:28:16,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:28:16,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:28:16,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:28:16,166 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:28:16,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:28:16,167 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:28:16,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:28:16,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:28:16,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:28:16,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:28:16,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:28:16,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:28:16,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:28:16,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:28:16,169 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:28:16,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:28:16,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:28:16,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:28:16,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:28:16,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:28:16,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:28:16,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:28:16,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:28:16,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:28:16,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:28:16,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:28:16,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:28:16,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:28:16,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:28:16,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:28:16,712 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:28:16,719 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:28:16,721 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:28:16,723 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:28:16,725 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-24 18:28:16,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ede8e2e7/44dc5eb3e81f4bd5a6c0564e977efea9/FLAGa598f63f7 [2020-09-24 18:28:17,364 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:28:17,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-24 18:28:17,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ede8e2e7/44dc5eb3e81f4bd5a6c0564e977efea9/FLAGa598f63f7 [2020-09-24 18:28:17,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ede8e2e7/44dc5eb3e81f4bd5a6c0564e977efea9 [2020-09-24 18:28:17,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:28:17,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:28:17,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:28:17,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:28:17,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:28:17,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:28:17" (1/1) ... [2020-09-24 18:28:17,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe12ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:17, skipping insertion in model container [2020-09-24 18:28:17,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:28:17" (1/1) ... [2020-09-24 18:28:17,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:28:17,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:28:18,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:28:18,030 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:28:18,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:28:18,084 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:28:18,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18 WrapperNode [2020-09-24 18:28:18,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:28:18,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:28:18,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:28:18,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:28:18,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... [2020-09-24 18:28:18,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... [2020-09-24 18:28:18,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... [2020-09-24 18:28:18,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... [2020-09-24 18:28:18,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... [2020-09-24 18:28:18,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... [2020-09-24 18:28:18,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... [2020-09-24 18:28:18,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:28:18,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:28:18,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:28:18,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:28:18,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:28:18,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:28:18,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:28:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:28:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-09-24 18:28:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-09-24 18:28:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:28:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:28:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:28:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:28:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-09-24 18:28:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:28:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-09-24 18:28:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:28:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:28:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:28:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:28:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:28:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:28:18,827 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:28:18,830 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-24 18:28:18,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:28:18 BoogieIcfgContainer [2020-09-24 18:28:18,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:28:18,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:28:18,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:28:18,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:28:18,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:28:17" (1/3) ... [2020-09-24 18:28:18,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313429b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:28:18, skipping insertion in model container [2020-09-24 18:28:18,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (2/3) ... [2020-09-24 18:28:18,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313429b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:28:18, skipping insertion in model container [2020-09-24 18:28:18,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:28:18" (3/3) ... [2020-09-24 18:28:18,846 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-09-24 18:28:18,856 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:28:18,869 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:28:18,890 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:28:18,928 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:28:18,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:28:18,929 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:28:18,929 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:28:18,929 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:28:18,929 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:28:18,929 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:28:18,929 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:28:18,954 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-09-24 18:28:18,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 18:28:18,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:18,963 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] [2020-09-24 18:28:18,963 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:18,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:18,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1588916751, now seen corresponding path program 1 times [2020-09-24 18:28:18,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:18,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979576615] [2020-09-24 18:28:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:19,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:19,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:19,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:19,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 18:28:19,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:28:19,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 627 [2020-09-24 18:28:19,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:19,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:28:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:19,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:28:19,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:19,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:19,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:19,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:28:19,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:19,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:28:19,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:19,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:19,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:19,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:19,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:19,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979576615] [2020-09-24 18:28:19,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:19,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:28:19,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142463664] [2020-09-24 18:28:19,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:28:19,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:19,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:28:19,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:28:19,859 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 3 states. [2020-09-24 18:28:20,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:20,148 INFO L93 Difference]: Finished difference Result 245 states and 295 transitions. [2020-09-24 18:28:20,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:28:20,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-24 18:28:20,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:20,165 INFO L225 Difference]: With dead ends: 245 [2020-09-24 18:28:20,165 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 18:28:20,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:28:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 18:28:20,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-24 18:28:20,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-24 18:28:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2020-09-24 18:28:20,233 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 23 [2020-09-24 18:28:20,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:20,234 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2020-09-24 18:28:20,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:28:20,234 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2020-09-24 18:28:20,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 18:28:20,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:20,237 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] [2020-09-24 18:28:20,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:28:20,238 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:20,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:20,238 INFO L82 PathProgramCache]: Analyzing trace with hash -119454780, now seen corresponding path program 1 times [2020-09-24 18:28:20,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:20,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657201400] [2020-09-24 18:28:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:20,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:20,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:20,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:20,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:20,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 18:28:20,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:28:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-24 18:28:20,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:28:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:28:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 18:28:20,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:20,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:20,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:20,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:28:20,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:20,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:28:20,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:20,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:20,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:20,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:20,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657201400] [2020-09-24 18:28:20,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:20,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:28:20,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891103811] [2020-09-24 18:28:20,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:28:20,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:20,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:28:20,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:28:20,618 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand 4 states. [2020-09-24 18:28:21,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:21,007 INFO L93 Difference]: Finished difference Result 303 states and 342 transitions. [2020-09-24 18:28:21,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:28:21,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-24 18:28:21,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:21,012 INFO L225 Difference]: With dead ends: 303 [2020-09-24 18:28:21,012 INFO L226 Difference]: Without dead ends: 199 [2020-09-24 18:28:21,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:28:21,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-24 18:28:21,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 124. [2020-09-24 18:28:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-24 18:28:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 137 transitions. [2020-09-24 18:28:21,035 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 137 transitions. Word has length 23 [2020-09-24 18:28:21,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:21,035 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 137 transitions. [2020-09-24 18:28:21,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:28:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 137 transitions. [2020-09-24 18:28:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 18:28:21,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:21,037 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] [2020-09-24 18:28:21,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:28:21,038 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:21,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:21,038 INFO L82 PathProgramCache]: Analyzing trace with hash -395870253, now seen corresponding path program 1 times [2020-09-24 18:28:21,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:21,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974018456] [2020-09-24 18:28:21,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:21,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:21,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:21,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:28:21,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:28:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-09-24 18:28:21,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:28:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:28:21,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:28:21,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:21,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:21,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:21,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:21,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:28:21,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:21,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:28:21,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:21,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:21,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:21,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:21,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:28:21,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974018456] [2020-09-24 18:28:21,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:21,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:28:21,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913836071] [2020-09-24 18:28:21,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:28:21,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:21,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:28:21,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:28:21,706 INFO L87 Difference]: Start difference. First operand 124 states and 137 transitions. Second operand 5 states. [2020-09-24 18:28:22,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:22,032 INFO L93 Difference]: Finished difference Result 240 states and 268 transitions. [2020-09-24 18:28:22,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:28:22,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 18:28:22,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:22,035 INFO L225 Difference]: With dead ends: 240 [2020-09-24 18:28:22,035 INFO L226 Difference]: Without dead ends: 135 [2020-09-24 18:28:22,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:28:22,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-24 18:28:22,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 123. [2020-09-24 18:28:22,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-24 18:28:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2020-09-24 18:28:22,049 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 30 [2020-09-24 18:28:22,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:22,049 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2020-09-24 18:28:22,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:28:22,050 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2020-09-24 18:28:22,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 18:28:22,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:22,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:22,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:28:22,053 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:22,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:22,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1571460690, now seen corresponding path program 1 times [2020-09-24 18:28:22,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:22,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693196265] [2020-09-24 18:28:22,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:22,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:22,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:22,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:22,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:22,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:27,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:28:27,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:28:27,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 18:28:27,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:27,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:28:27,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 18:28:27,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 18:28:27,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:27,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:27,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:28:27,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:28:27,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:27,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:27,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 18:28:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:27,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:27,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:28:27,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:28:27,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:28:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:27,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:27,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 18:28:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:27,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:28:27,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:27,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:28:27,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:28:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:27,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:28:27,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693196265] [2020-09-24 18:28:27,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:27,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:28:27,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778095472] [2020-09-24 18:28:27,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:28:27,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:27,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:28:27,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:28:27,180 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand 5 states. [2020-09-24 18:28:27,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:27,527 INFO L93 Difference]: Finished difference Result 258 states and 287 transitions. [2020-09-24 18:28:27,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:28:27,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-09-24 18:28:27,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:27,530 INFO L225 Difference]: With dead ends: 258 [2020-09-24 18:28:27,530 INFO L226 Difference]: Without dead ends: 167 [2020-09-24 18:28:27,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:28:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-09-24 18:28:27,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 124. [2020-09-24 18:28:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-24 18:28:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 136 transitions. [2020-09-24 18:28:27,544 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 136 transitions. Word has length 66 [2020-09-24 18:28:27,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:27,545 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 136 transitions. [2020-09-24 18:28:27,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:28:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 136 transitions. [2020-09-24 18:28:27,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 18:28:27,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:27,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:27,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:28:27,547 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:27,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:27,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1243827998, now seen corresponding path program 1 times [2020-09-24 18:28:27,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:27,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468056039] [2020-09-24 18:28:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:27,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:28,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:28,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:32,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:32,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 18:28:32,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:28:32,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:28:32,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:32,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:28:32,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 18:28:32,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:28:32,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:32,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:32,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:32,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:32,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:28:32,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:28:32,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:32,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:32,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:28:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:32,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:32,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:32,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:28:32,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:32,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:28:32,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:32,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:28:32,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:28:32,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:32,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:28:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:32,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:32,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:32,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:28:32,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:32,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:28:32,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:32,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:32,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:28:32,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:32,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 18:28:32,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468056039] [2020-09-24 18:28:32,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:32,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:28:32,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156508820] [2020-09-24 18:28:32,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:28:32,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:32,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:28:32,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:28:32,715 INFO L87 Difference]: Start difference. First operand 124 states and 136 transitions. Second operand 6 states. [2020-09-24 18:28:32,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:32,982 INFO L93 Difference]: Finished difference Result 210 states and 233 transitions. [2020-09-24 18:28:32,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:28:32,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-09-24 18:28:32,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:32,984 INFO L225 Difference]: With dead ends: 210 [2020-09-24 18:28:32,985 INFO L226 Difference]: Without dead ends: 132 [2020-09-24 18:28:32,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:28:32,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-24 18:28:33,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-09-24 18:28:33,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-24 18:28:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-09-24 18:28:33,004 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 73 [2020-09-24 18:28:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:33,004 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-09-24 18:28:33,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:28:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-09-24 18:28:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 18:28:33,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:33,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:33,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:28:33,011 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:33,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:33,012 INFO L82 PathProgramCache]: Analyzing trace with hash 351512012, now seen corresponding path program 1 times [2020-09-24 18:28:33,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:33,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710413449] [2020-09-24 18:28:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:33,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:33,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:33,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:34,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:38,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:38,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 18:28:38,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:28:38,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:28:38,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:28:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:28:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:28:38,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:38,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:38,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:38,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:38,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:28:38,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:38,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:28:38,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:38,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:38,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:38,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:38,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:38,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:28:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:38,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:38,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:38,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:28:38,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:38,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:28:38,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 18:28:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:38,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:38,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 18:28:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:38,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:38,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:38,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:28:38,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:38,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:28:38,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:38,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:38,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:28:38,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:38,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:38,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:28:38,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710413449] [2020-09-24 18:28:38,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:28:38,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:28:38,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944948285] [2020-09-24 18:28:38,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:28:38,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:38,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:28:38,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:28:38,168 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 7 states. [2020-09-24 18:28:38,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:38,580 INFO L93 Difference]: Finished difference Result 300 states and 336 transitions. [2020-09-24 18:28:38,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:28:38,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-09-24 18:28:38,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:38,582 INFO L225 Difference]: With dead ends: 300 [2020-09-24 18:28:38,582 INFO L226 Difference]: Without dead ends: 190 [2020-09-24 18:28:38,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:28:38,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-24 18:28:38,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 137. [2020-09-24 18:28:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-09-24 18:28:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2020-09-24 18:28:38,599 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 76 [2020-09-24 18:28:38,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:38,600 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2020-09-24 18:28:38,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:28:38,600 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2020-09-24 18:28:38,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 18:28:38,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:38,603 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:38,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:28:38,603 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:38,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:38,604 INFO L82 PathProgramCache]: Analyzing trace with hash -965257955, now seen corresponding path program 2 times [2020-09-24 18:28:38,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:38,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829471379] [2020-09-24 18:28:38,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:38,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:38,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:38,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:43,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:43,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:43,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:43,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 18:28:43,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:28:43,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:28:43,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:43,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:28:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 18:28:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:28:43,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:43,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:43,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:43,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:43,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:28:43,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:28:43,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:43,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:43,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 18:28:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:43,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:43,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:43,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:28:43,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:43,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:28:43,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:43,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 18:28:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:43,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:43,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 18:28:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:43,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:43,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:43,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:28:43,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:28:43,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:43,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:28:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:43,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 18:28:43,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829471379] [2020-09-24 18:28:43,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:28:43,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:28:43,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821162390] [2020-09-24 18:28:43,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:28:43,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:43,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:28:43,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:28:43,783 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand 7 states. [2020-09-24 18:28:44,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:44,212 INFO L93 Difference]: Finished difference Result 284 states and 316 transitions. [2020-09-24 18:28:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:28:44,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-09-24 18:28:44,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:44,215 INFO L225 Difference]: With dead ends: 284 [2020-09-24 18:28:44,215 INFO L226 Difference]: Without dead ends: 187 [2020-09-24 18:28:44,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:28:44,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-24 18:28:44,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 144. [2020-09-24 18:28:44,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-24 18:28:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 157 transitions. [2020-09-24 18:28:44,232 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 157 transitions. Word has length 83 [2020-09-24 18:28:44,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:44,234 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 157 transitions. [2020-09-24 18:28:44,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:28:44,235 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 157 transitions. [2020-09-24 18:28:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-24 18:28:44,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:44,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:44,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:28:44,239 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:44,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:44,240 INFO L82 PathProgramCache]: Analyzing trace with hash -914480437, now seen corresponding path program 3 times [2020-09-24 18:28:44,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:44,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906973702] [2020-09-24 18:28:44,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:44,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:44,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:44,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:44,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:49,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:49,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-24 18:28:49,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:28:49,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:28:49,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:28:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:28:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 18:28:49,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:49,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:49,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:49,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:49,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:28:49,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:49,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:28:49,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:49,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:49,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:49,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:28:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:49,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:49,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:49,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:28:49,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 18:28:49,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:49,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:28:49,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:28:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:28:49,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 18:28:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:49,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:49,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:28:49,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:49,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:28:49,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:49,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:49,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:28:49,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:49,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-24 18:28:49,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906973702] [2020-09-24 18:28:49,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:49,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:28:49,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803522687] [2020-09-24 18:28:49,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:28:49,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:49,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:28:49,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:28:49,454 INFO L87 Difference]: Start difference. First operand 144 states and 157 transitions. Second operand 8 states. [2020-09-24 18:28:49,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:49,803 INFO L93 Difference]: Finished difference Result 188 states and 205 transitions. [2020-09-24 18:28:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:28:49,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-09-24 18:28:49,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:49,805 INFO L225 Difference]: With dead ends: 188 [2020-09-24 18:28:49,806 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:28:49,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:28:49,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:28:49,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:28:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:28:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:28:49,809 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2020-09-24 18:28:49,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:49,809 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:28:49,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:28:49,810 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:28:49,810 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:28:49,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:28:49,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:28:50,154 INFO L271 CegarLoopResult]: At program point elem_existsENTRY(lines 9 15) the Hoare annotation is: true [2020-09-24 18:28:50,154 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 18:28:50,155 INFO L268 CegarLoopResult]: For program point L9(lines 9 15) no Hoare annotation was computed. [2020-09-24 18:28:50,155 INFO L268 CegarLoopResult]: For program point elem_existsFINAL(lines 9 15) no Hoare annotation was computed. [2020-09-24 18:28:50,155 INFO L268 CegarLoopResult]: For program point L9-1(lines 9 15) no Hoare annotation was computed. [2020-09-24 18:28:50,155 INFO L268 CegarLoopResult]: For program point L11-3(lines 11 13) no Hoare annotation was computed. [2020-09-24 18:28:50,155 INFO L268 CegarLoopResult]: For program point L11-4(line 11) no Hoare annotation was computed. [2020-09-24 18:28:50,156 INFO L268 CegarLoopResult]: For program point L11-5(line 11) no Hoare annotation was computed. [2020-09-24 18:28:50,156 INFO L264 CegarLoopResult]: At program point L11-6(lines 11 13) the Hoare annotation is: (let ((.cse0 (= elem_exists_~size |elem_exists_#in~size|))) (or (and (<= 0 elem_exists_~i~0) .cse0) (and .cse0 (<= 1 |elem_exists_#in~size|)))) [2020-09-24 18:28:50,156 INFO L268 CegarLoopResult]: For program point L11-7(lines 11 13) no Hoare annotation was computed. [2020-09-24 18:28:50,156 INFO L268 CegarLoopResult]: For program point elem_existsEXIT(lines 9 15) no Hoare annotation was computed. [2020-09-24 18:28:50,156 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 18:28:50,156 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 18:28:50,157 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 18:28:50,157 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 18:28:50,157 INFO L268 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-09-24 18:28:50,157 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-24 18:28:50,157 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 18:28:50,157 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 18:28:50,157 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:28:50,158 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 18:28:50,158 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:28:50,158 INFO L271 CegarLoopResult]: At program point insertENTRY(lines 5 8) the Hoare annotation is: true [2020-09-24 18:28:50,158 INFO L268 CegarLoopResult]: For program point insertFINAL(lines 5 8) no Hoare annotation was computed. [2020-09-24 18:28:50,158 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 18:28:50,159 INFO L268 CegarLoopResult]: For program point L5(lines 5 8) no Hoare annotation was computed. [2020-09-24 18:28:50,159 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 18:28:50,159 INFO L268 CegarLoopResult]: For program point L5-1(lines 5 8) no Hoare annotation was computed. [2020-09-24 18:28:50,159 INFO L268 CegarLoopResult]: For program point insertEXIT(lines 5 8) no Hoare annotation was computed. [2020-09-24 18:28:50,159 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:28:50,159 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 18:28:50,160 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 18:28:50,160 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:28:50,160 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 56) no Hoare annotation was computed. [2020-09-24 18:28:50,160 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-24 18:28:50,160 INFO L268 CegarLoopResult]: For program point L52-1(line 52) no Hoare annotation was computed. [2020-09-24 18:28:50,160 INFO L264 CegarLoopResult]: At program point L52-2(line 52) the Hoare annotation is: false [2020-09-24 18:28:50,161 INFO L268 CegarLoopResult]: For program point L52-3(line 52) no Hoare annotation was computed. [2020-09-24 18:28:50,161 INFO L268 CegarLoopResult]: For program point L52-4(line 52) no Hoare annotation was computed. [2020-09-24 18:28:50,161 INFO L268 CegarLoopResult]: For program point L44-2(lines 44 48) no Hoare annotation was computed. [2020-09-24 18:28:50,161 INFO L268 CegarLoopResult]: For program point L44-3(line 44) no Hoare annotation was computed. [2020-09-24 18:28:50,161 INFO L268 CegarLoopResult]: For program point L44-4(line 44) no Hoare annotation was computed. [2020-09-24 18:28:50,161 INFO L264 CegarLoopResult]: At program point L44-5(lines 44 48) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-24 18:28:50,162 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-24 18:28:50,162 INFO L268 CegarLoopResult]: For program point L36-3(lines 36 39) no Hoare annotation was computed. [2020-09-24 18:28:50,162 INFO L268 CegarLoopResult]: For program point L36-4(line 36) no Hoare annotation was computed. [2020-09-24 18:28:50,162 INFO L268 CegarLoopResult]: For program point L36-5(line 36) no Hoare annotation was computed. [2020-09-24 18:28:50,162 INFO L264 CegarLoopResult]: At program point L36-6(lines 36 39) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-24 18:28:50,162 INFO L268 CegarLoopResult]: For program point L36-7(lines 36 39) no Hoare annotation was computed. [2020-09-24 18:28:50,163 INFO L268 CegarLoopResult]: For program point L28-2(lines 28 32) no Hoare annotation was computed. [2020-09-24 18:28:50,163 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-24 18:28:50,163 INFO L268 CegarLoopResult]: For program point L28-4(line 28) no Hoare annotation was computed. [2020-09-24 18:28:50,163 INFO L264 CegarLoopResult]: At program point L28-5(lines 28 32) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-24 18:28:50,163 INFO L268 CegarLoopResult]: For program point L28-6(lines 28 32) no Hoare annotation was computed. [2020-09-24 18:28:50,163 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 18:28:50,164 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-24 18:28:50,164 INFO L268 CegarLoopResult]: For program point L45-3(lines 45 47) no Hoare annotation was computed. [2020-09-24 18:28:50,164 INFO L268 CegarLoopResult]: For program point L45-4(line 45) no Hoare annotation was computed. [2020-09-24 18:28:50,164 INFO L268 CegarLoopResult]: For program point L45-5(line 45) no Hoare annotation was computed. [2020-09-24 18:28:50,164 INFO L264 CegarLoopResult]: At program point L45-6(lines 45 47) the Hoare annotation is: false [2020-09-24 18:28:50,164 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 18:28:50,165 INFO L268 CegarLoopResult]: For program point L29-3(lines 29 31) no Hoare annotation was computed. [2020-09-24 18:28:50,165 INFO L268 CegarLoopResult]: For program point L29-4(line 29) no Hoare annotation was computed. [2020-09-24 18:28:50,165 INFO L268 CegarLoopResult]: For program point L29-5(line 29) no Hoare annotation was computed. [2020-09-24 18:28:50,165 INFO L264 CegarLoopResult]: At program point L29-6(lines 29 31) the Hoare annotation is: false [2020-09-24 18:28:50,165 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 18:28:50,165 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-24 18:28:50,165 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 56) no Hoare annotation was computed. [2020-09-24 18:28:50,166 INFO L264 CegarLoopResult]: At program point L46-2(line 46) the Hoare annotation is: false [2020-09-24 18:28:50,166 INFO L268 CegarLoopResult]: For program point L46-3(line 46) no Hoare annotation was computed. [2020-09-24 18:28:50,166 INFO L268 CegarLoopResult]: For program point L46-4(line 46) no Hoare annotation was computed. [2020-09-24 18:28:50,166 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-24 18:28:50,166 INFO L268 CegarLoopResult]: For program point L38-1(line 38) no Hoare annotation was computed. [2020-09-24 18:28:50,166 INFO L268 CegarLoopResult]: For program point L38-2(line 38) no Hoare annotation was computed. [2020-09-24 18:28:50,167 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 18:28:50,167 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 16 56) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 18:28:50,167 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 18:28:50,167 INFO L264 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: false [2020-09-24 18:28:50,167 INFO L268 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-09-24 18:28:50,167 INFO L268 CegarLoopResult]: For program point L30-4(line 30) no Hoare annotation was computed. [2020-09-24 18:28:50,167 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 18:28:50,168 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 25) no Hoare annotation was computed. [2020-09-24 18:28:50,168 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-24 18:28:50,168 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-24 18:28:50,168 INFO L264 CegarLoopResult]: At program point L22-6(lines 22 25) the Hoare annotation is: (<= main_~n~0 0) [2020-09-24 18:28:50,168 INFO L268 CegarLoopResult]: For program point L22-7(lines 22 25) no Hoare annotation was computed. [2020-09-24 18:28:50,168 INFO L268 CegarLoopResult]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2020-09-24 18:28:50,169 INFO L268 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-09-24 18:28:50,169 INFO L268 CegarLoopResult]: For program point L40-4(line 40) no Hoare annotation was computed. [2020-09-24 18:28:50,169 INFO L264 CegarLoopResult]: At program point L40-5(lines 40 49) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-24 18:28:50,169 INFO L268 CegarLoopResult]: For program point L40-6(lines 40 49) no Hoare annotation was computed. [2020-09-24 18:28:50,169 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 18:28:50,169 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 18:28:50,169 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 18:28:50,170 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 18:28:50,170 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-24 18:28:50,170 INFO L268 CegarLoopResult]: For program point L41-2(line 41) no Hoare annotation was computed. [2020-09-24 18:28:50,170 INFO L268 CegarLoopResult]: For program point L41-3(lines 41 43) no Hoare annotation was computed. [2020-09-24 18:28:50,170 INFO L268 CegarLoopResult]: For program point L41-4(line 41) no Hoare annotation was computed. [2020-09-24 18:28:50,170 INFO L268 CegarLoopResult]: For program point L41-5(line 41) no Hoare annotation was computed. [2020-09-24 18:28:50,170 INFO L268 CegarLoopResult]: For program point L41-7(line 41) no Hoare annotation was computed. [2020-09-24 18:28:50,171 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 18:28:50,171 INFO L268 CegarLoopResult]: For program point L41-8(line 41) no Hoare annotation was computed. [2020-09-24 18:28:50,171 INFO L268 CegarLoopResult]: For program point L41-9(lines 41 43) no Hoare annotation was computed. [2020-09-24 18:28:50,171 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 18:28:50,171 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 18:28:50,171 INFO L268 CegarLoopResult]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2020-09-24 18:28:50,171 INFO L268 CegarLoopResult]: For program point L50-3(line 50) no Hoare annotation was computed. [2020-09-24 18:28:50,172 INFO L268 CegarLoopResult]: For program point L50-4(line 50) no Hoare annotation was computed. [2020-09-24 18:28:50,172 INFO L264 CegarLoopResult]: At program point L50-5(lines 50 54) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~n~0 0)) [2020-09-24 18:28:50,172 INFO L268 CegarLoopResult]: For program point L50-6(lines 50 54) no Hoare annotation was computed. [2020-09-24 18:28:50,172 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-24 18:28:50,172 INFO L264 CegarLoopResult]: At program point L42-1(line 42) the Hoare annotation is: false [2020-09-24 18:28:50,172 INFO L268 CegarLoopResult]: For program point L42-2(line 42) no Hoare annotation was computed. [2020-09-24 18:28:50,172 INFO L268 CegarLoopResult]: For program point L42-3(line 42) no Hoare annotation was computed. [2020-09-24 18:28:50,173 INFO L268 CegarLoopResult]: For program point L42-4(line 42) no Hoare annotation was computed. [2020-09-24 18:28:50,173 INFO L268 CegarLoopResult]: For program point L42-5(line 42) no Hoare annotation was computed. [2020-09-24 18:28:50,173 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-24 18:28:50,173 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 18:28:50,173 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 18:28:50,173 INFO L268 CegarLoopResult]: For program point L51-3(lines 51 53) no Hoare annotation was computed. [2020-09-24 18:28:50,173 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 18:28:50,174 INFO L268 CegarLoopResult]: For program point L51-4(line 51) no Hoare annotation was computed. [2020-09-24 18:28:50,174 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-09-24 18:28:50,174 INFO L268 CegarLoopResult]: For program point L51-5(line 51) no Hoare annotation was computed. [2020-09-24 18:28:50,174 INFO L264 CegarLoopResult]: At program point L51-6(lines 51 53) the Hoare annotation is: false [2020-09-24 18:28:50,174 INFO L268 CegarLoopResult]: For program point L2-1(line 2) no Hoare annotation was computed. [2020-09-24 18:28:50,174 INFO L268 CegarLoopResult]: For program point L2-3(line 2) no Hoare annotation was computed. [2020-09-24 18:28:50,174 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2020-09-24 18:28:50,175 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2020-09-24 18:28:50,175 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2020-09-24 18:28:50,175 INFO L268 CegarLoopResult]: For program point L2(line 2) no Hoare annotation was computed. [2020-09-24 18:28:50,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:28:50 BoogieIcfgContainer [2020-09-24 18:28:50,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:28:50,203 INFO L168 Benchmark]: Toolchain (without parser) took 32486.35 ms. Allocated memory was 146.3 MB in the beginning and 429.4 MB in the end (delta: 283.1 MB). Free memory was 101.8 MB in the beginning and 384.3 MB in the end (delta: -282.4 MB). Peak memory consumption was 275.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:50,203 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 18:28:50,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.72 ms. Allocated memory is still 146.3 MB. Free memory was 101.2 MB in the beginning and 89.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:50,205 INFO L168 Benchmark]: Boogie Preprocessor took 150.07 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 89.6 MB in the beginning and 180.1 MB in the end (delta: -90.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:50,206 INFO L168 Benchmark]: RCFGBuilder took 600.40 ms. Allocated memory is still 202.9 MB. Free memory was 180.1 MB in the beginning and 151.4 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:50,207 INFO L168 Benchmark]: TraceAbstraction took 31360.50 ms. Allocated memory was 202.9 MB in the beginning and 429.4 MB in the end (delta: 226.5 MB). Free memory was 150.8 MB in the beginning and 384.3 MB in the end (delta: -233.5 MB). Peak memory consumption was 267.8 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:50,210 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 364.72 ms. Allocated memory is still 146.3 MB. Free memory was 101.2 MB in the beginning and 89.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.07 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 89.6 MB in the beginning and 180.1 MB in the end (delta: -90.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 600.40 ms. Allocated memory is still 202.9 MB. Free memory was 180.1 MB in the beginning and 151.4 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31360.50 ms. Allocated memory was 202.9 MB in the beginning and 429.4 MB in the end (delta: 226.5 MB). Free memory was 150.8 MB in the beginning and 384.3 MB in the end (delta: -233.5 MB). Peak memory consumption was 267.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: n <= x && x <= 0 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: n <= x && x <= 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: n <= x && n <= 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: n <= x && x <= 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: n <= x && x <= 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (0 <= i && size == \old(size)) || (size == \old(size) && 1 <= \old(size)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: n <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 30.8s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 885 SDtfs, 775 SDslu, 1148 SDs, 0 SdLazy, 1487 SolverSat, 132 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 228 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 71 PreInvPairs, 82 NumberOfFragments, 89 HoareAnnotationTreeSize, 71 FomulaSimplifications, 174 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 22 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 27.3s InterpolantComputationTime, 464 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 456 ConstructedInterpolants, 0 QuantifiedInterpolants, 50798 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 32/34 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...