/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:01:28,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:01:28,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:01:28,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:01:28,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:01:28,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:01:28,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:01:28,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:01:28,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:01:28,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:01:28,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:01:28,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:01:28,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:01:28,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:01:28,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:01:28,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:01:28,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:01:28,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:01:28,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:01:28,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:01:28,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:01:28,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:01:28,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:01:28,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:01:28,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:01:28,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:01:28,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:01:28,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:01:28,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:01:28,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:01:28,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:01:28,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:01:28,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:01:28,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:01:28,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:01:28,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:01:28,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:01:28,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:01:28,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:01:28,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:01:28,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:01:28,167 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 16:01:28,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:01:28,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:01:28,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:01:28,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:01:28,213 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:01:28,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:01:28,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:01:28,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:01:28,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:01:28,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:01:28,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:01:28,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:01:28,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:01:28,217 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:01:28,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:01:28,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:01:28,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:01:28,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:01:28,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:01:28,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:01:28,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:01:28,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:01:28,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:01:28,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:01:28,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:01:28,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:01:28,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:01:28,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:01:28,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:01:28,220 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:01:28,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:01:28,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:01:28,786 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:01:28,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:01:28,790 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:01:28,791 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-2.c [2020-09-24 16:01:28,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7f54a5a2/7cf2cc71a9f047559e3be801f5535631/FLAGdb0b1d34e [2020-09-24 16:01:29,462 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:01:29,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-2.c [2020-09-24 16:01:29,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7f54a5a2/7cf2cc71a9f047559e3be801f5535631/FLAGdb0b1d34e [2020-09-24 16:01:29,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7f54a5a2/7cf2cc71a9f047559e3be801f5535631 [2020-09-24 16:01:29,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:01:29,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:01:29,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:29,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:01:29,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:01:29,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:29" (1/1) ... [2020-09-24 16:01:29,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693e2903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:29, skipping insertion in model container [2020-09-24 16:01:29,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:29" (1/1) ... [2020-09-24 16:01:29,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:01:29,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:01:30,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:30,089 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:01:30,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:30,131 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:01:30,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30 WrapperNode [2020-09-24 16:01:30,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:30,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:01:30,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:01:30,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:01:30,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:01:30,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:01:30,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:01:30,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:01:30,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (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 16:01:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:01:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:01:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 16:01:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:01:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:01:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:01:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 16:01:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:01:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:01:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:01:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:01:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:01:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:01:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:01:30,687 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:01:30,688 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 16:01:30,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:30 BoogieIcfgContainer [2020-09-24 16:01:30,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:01:30,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:01:30,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:01:30,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:01:30,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:01:29" (1/3) ... [2020-09-24 16:01:30,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bc761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:30, skipping insertion in model container [2020-09-24 16:01:30,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (2/3) ... [2020-09-24 16:01:30,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bc761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:30, skipping insertion in model container [2020-09-24 16:01:30,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:30" (3/3) ... [2020-09-24 16:01:30,706 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-2.c [2020-09-24 16:01:30,717 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:01:30,726 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:01:30,746 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:01:30,776 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:01:30,776 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:01:30,776 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:01:30,776 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:01:30,776 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:01:30,776 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:01:30,776 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:01:30,777 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:01:30,802 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-09-24 16:01:30,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 16:01:30,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:30,811 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] [2020-09-24 16:01:30,812 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:30,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:30,818 INFO L82 PathProgramCache]: Analyzing trace with hash 2031307650, now seen corresponding path program 1 times [2020-09-24 16:01:30,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:30,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903848354] [2020-09-24 16:01:30,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,972 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:30,972 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:30,973 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:30,973 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:30,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 16:01:30,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:30,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 16:01:30,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 16:01:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:30,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,055 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,056 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,056 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,056 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:31,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:31,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:31,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:31,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 16:01:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,079 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,080 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,080 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,080 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:31,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:31,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:31,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:31,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:31,101 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 16:01:31,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903848354] [2020-09-24 16:01:31,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:31,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:01:31,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134845393] [2020-09-24 16:01:31,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:01:31,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:31,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:01:31,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:01:31,138 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2020-09-24 16:01:31,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:31,325 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2020-09-24 16:01:31,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:01:31,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-09-24 16:01:31,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:31,341 INFO L225 Difference]: With dead ends: 102 [2020-09-24 16:01:31,342 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 16:01:31,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 16:01:31,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 16:01:31,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 16:01:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 16:01:31,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-24 16:01:31,402 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 37 [2020-09-24 16:01:31,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:31,403 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-24 16:01:31,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:01:31,404 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-24 16:01:31,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 16:01:31,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:31,406 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] [2020-09-24 16:01:31,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:01:31,407 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:31,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:31,407 INFO L82 PathProgramCache]: Analyzing trace with hash 897550373, now seen corresponding path program 1 times [2020-09-24 16:01:31,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:31,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821581421] [2020-09-24 16:01:31,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,447 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,448 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,448 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,448 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 16:01:31,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:01:31,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 16:01:31,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,511 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,512 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,512 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,512 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:31,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:31,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:31,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:31,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:31,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 16:01:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,525 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,525 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,525 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,526 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:31,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:31,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:31,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:31,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:31,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,539 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 16:01:31,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821581421] [2020-09-24 16:01:31,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:31,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:01:31,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679163560] [2020-09-24 16:01:31,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:01:31,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:31,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:01:31,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:01:31,544 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 4 states. [2020-09-24 16:01:31,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:31,675 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2020-09-24 16:01:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:01:31,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-09-24 16:01:31,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:31,678 INFO L225 Difference]: With dead ends: 92 [2020-09-24 16:01:31,678 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 16:01:31,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 16:01:31,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 16:01:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-24 16:01:31,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 16:01:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-24 16:01:31,690 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 39 [2020-09-24 16:01:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:31,691 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-24 16:01:31,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:01:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-24 16:01:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 16:01:31,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:31,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:31,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:01:31,694 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:31,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:31,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1785369867, now seen corresponding path program 1 times [2020-09-24 16:01:31,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:31,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297496127] [2020-09-24 16:01:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,744 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,744 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,744 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,746 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 16:01:31,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 16:01:31,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:01:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 16:01:31,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:31,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,871 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,871 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,871 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,871 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:31,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:31,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 16:01:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,881 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,881 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,882 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,882 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:31,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:31,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:31,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:31,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:31,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297496127] [2020-09-24 16:01:31,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:31,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 16:01:31,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675493681] [2020-09-24 16:01:31,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:01:31,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:31,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:01:31,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:01:31,895 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 6 states. [2020-09-24 16:01:32,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:32,043 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2020-09-24 16:01:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:01:32,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-24 16:01:32,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:32,045 INFO L225 Difference]: With dead ends: 102 [2020-09-24 16:01:32,045 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 16:01:32,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:01:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 16:01:32,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2020-09-24 16:01:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-24 16:01:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2020-09-24 16:01:32,055 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 49 [2020-09-24 16:01:32,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:32,056 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2020-09-24 16:01:32,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:01:32,056 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2020-09-24 16:01:32,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 16:01:32,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:32,058 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 16:01:32,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:01:32,058 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:32,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:32,059 INFO L82 PathProgramCache]: Analyzing trace with hash 862927473, now seen corresponding path program 2 times [2020-09-24 16:01:32,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:32,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138996141] [2020-09-24 16:01:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:32,106 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:32,107 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:32,107 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:32,107 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:32,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 16:01:32,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:32,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:01:32,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:32,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:01:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 16:01:32,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:32,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:32,197 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:32,197 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:32,197 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:32,197 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:32,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:32,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:32,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:32,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:32,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 16:01:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:32,213 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:32,214 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:32,214 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:32,214 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:32,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:32,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:32,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:32,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:32,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:32,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138996141] [2020-09-24 16:01:32,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:32,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 16:01:32,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623194873] [2020-09-24 16:01:32,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:01:32,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:32,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:01:32,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:01:32,244 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 8 states. [2020-09-24 16:01:32,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:32,436 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2020-09-24 16:01:32,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:01:32,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-24 16:01:32,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:32,438 INFO L225 Difference]: With dead ends: 112 [2020-09-24 16:01:32,438 INFO L226 Difference]: Without dead ends: 82 [2020-09-24 16:01:32,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:01:32,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-24 16:01:32,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2020-09-24 16:01:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 16:01:32,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-24 16:01:32,454 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 59 [2020-09-24 16:01:32,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:32,454 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-24 16:01:32,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:01:32,456 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-24 16:01:32,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 16:01:32,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:32,460 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:32,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:01:32,461 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:32,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:32,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1103681623, now seen corresponding path program 3 times [2020-09-24 16:01:32,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:32,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179935800] [2020-09-24 16:01:32,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:32,566 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:32,567 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:32,567 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:32,567 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:32,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 16:01:32,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:32,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 16:01:32,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:32,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:01:32,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 16:01:32,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:32,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:32,681 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:32,682 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:32,682 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:32,682 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:32,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:32,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:32,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:32,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:32,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:32,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:32,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:32,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:32,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 16:01:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:32,693 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:32,693 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:32,693 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:32,694 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:32,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:32,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:32,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:32,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:32,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:32,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:32,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:32,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179935800] [2020-09-24 16:01:32,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:32,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 16:01:32,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398878299] [2020-09-24 16:01:32,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 16:01:32,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:32,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 16:01:32,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:01:32,713 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 10 states. [2020-09-24 16:01:32,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:32,943 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2020-09-24 16:01:32,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 16:01:32,944 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-24 16:01:32,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:32,945 INFO L225 Difference]: With dead ends: 122 [2020-09-24 16:01:32,946 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 16:01:32,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:01:32,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 16:01:32,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2020-09-24 16:01:32,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 16:01:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-09-24 16:01:32,955 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 69 [2020-09-24 16:01:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:32,956 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-09-24 16:01:32,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 16:01:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-09-24 16:01:32,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 16:01:32,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:32,958 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:32,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:01:32,958 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:32,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:32,959 INFO L82 PathProgramCache]: Analyzing trace with hash -67449155, now seen corresponding path program 4 times [2020-09-24 16:01:32,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:32,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215860775] [2020-09-24 16:01:32,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:33,006 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:33,006 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:33,006 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:33,007 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:33,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 16:01:33,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:33,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 16:01:33,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:33,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:01:33,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:33,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 16:01:33,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:33,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:33,154 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:33,154 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:33,154 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:33,154 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:33,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:33,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:33,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:33,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-24 16:01:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:33,162 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:33,162 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:33,163 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:33,163 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:33,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:33,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:33,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:33,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:33,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:33,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215860775] [2020-09-24 16:01:33,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:33,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 16:01:33,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872788529] [2020-09-24 16:01:33,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 16:01:33,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:33,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 16:01:33,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:01:33,178 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 12 states. [2020-09-24 16:01:33,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:33,454 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2020-09-24 16:01:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 16:01:33,455 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-09-24 16:01:33,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:33,459 INFO L225 Difference]: With dead ends: 132 [2020-09-24 16:01:33,460 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 16:01:33,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-24 16:01:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 16:01:33,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2020-09-24 16:01:33,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-24 16:01:33,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-09-24 16:01:33,481 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 79 [2020-09-24 16:01:33,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:33,486 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-09-24 16:01:33,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 16:01:33,486 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-09-24 16:01:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 16:01:33,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:33,488 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:33,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:01:33,489 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:33,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:33,491 INFO L82 PathProgramCache]: Analyzing trace with hash -2083488349, now seen corresponding path program 5 times [2020-09-24 16:01:33,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:33,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384454674] [2020-09-24 16:01:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:33,593 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:33,593 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:33,593 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:33,594 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:33,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 16:01:33,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:33,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 16:01:33,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:33,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:01:33,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 16:01:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 16:01:33,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:33,747 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:33,748 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:33,748 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:33,748 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:33,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:33,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:33,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:33,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:33,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:33,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-24 16:01:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:33,755 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:33,755 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:33,756 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:33,756 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:33,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:33,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:33,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:33,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:33,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:33,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384454674] [2020-09-24 16:01:33,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:33,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 16:01:33,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796095291] [2020-09-24 16:01:33,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 16:01:33,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:33,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 16:01:33,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:01:33,770 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 14 states. [2020-09-24 16:01:34,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:34,150 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2020-09-24 16:01:34,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 16:01:34,150 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-09-24 16:01:34,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:34,151 INFO L225 Difference]: With dead ends: 142 [2020-09-24 16:01:34,152 INFO L226 Difference]: Without dead ends: 112 [2020-09-24 16:01:34,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-09-24 16:01:34,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-24 16:01:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 104. [2020-09-24 16:01:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-24 16:01:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2020-09-24 16:01:34,162 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 89 [2020-09-24 16:01:34,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:34,163 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2020-09-24 16:01:34,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 16:01:34,163 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2020-09-24 16:01:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-24 16:01:34,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:34,165 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:34,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:01:34,165 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:34,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:34,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1012745481, now seen corresponding path program 6 times [2020-09-24 16:01:34,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:34,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820075020] [2020-09-24 16:01:34,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:34,229 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:34,229 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:34,229 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:34,229 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:34,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-24 16:01:34,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:34,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 16:01:34,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:34,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 16:01:34,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:34,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 16:01:34,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:34,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:34,424 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:34,424 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:34,424 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:34,424 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:34,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:34,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:34,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:34,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:34,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:34,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:34,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 16:01:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:34,431 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:34,431 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:34,431 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:34,431 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:34,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:34,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:34,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:34,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820075020] [2020-09-24 16:01:34,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:34,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 16:01:34,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016511555] [2020-09-24 16:01:34,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 16:01:34,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:34,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 16:01:34,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:01:34,446 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand 16 states. [2020-09-24 16:01:34,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:34,881 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2020-09-24 16:01:34,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 16:01:34,881 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 99 [2020-09-24 16:01:34,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:34,884 INFO L225 Difference]: With dead ends: 152 [2020-09-24 16:01:34,884 INFO L226 Difference]: Without dead ends: 122 [2020-09-24 16:01:34,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2020-09-24 16:01:34,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-24 16:01:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 114. [2020-09-24 16:01:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-24 16:01:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2020-09-24 16:01:34,904 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 99 [2020-09-24 16:01:34,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:34,904 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2020-09-24 16:01:34,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 16:01:34,905 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2020-09-24 16:01:34,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-24 16:01:34,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:34,908 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:34,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:01:34,909 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:34,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:34,909 INFO L82 PathProgramCache]: Analyzing trace with hash -805534481, now seen corresponding path program 7 times [2020-09-24 16:01:34,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:34,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67773142] [2020-09-24 16:01:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:34,991 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:34,992 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:34,992 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:34,992 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:34,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 16:01:34,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:34,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 16:01:34,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:34,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 16:01:34,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:34,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 16:01:34,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:35,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:35,222 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:35,223 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:35,223 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:35,223 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:35,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:35,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:35,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:35,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:35,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:35,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:35,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:35,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-24 16:01:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:35,230 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:35,230 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:35,230 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:35,230 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:35,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:35,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:35,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:35,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:35,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:35,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67773142] [2020-09-24 16:01:35,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:35,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 16:01:35,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68229140] [2020-09-24 16:01:35,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 16:01:35,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:35,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 16:01:35,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-24 16:01:35,258 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 18 states. [2020-09-24 16:01:35,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:35,696 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2020-09-24 16:01:35,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 16:01:35,696 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 109 [2020-09-24 16:01:35,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:35,698 INFO L225 Difference]: With dead ends: 162 [2020-09-24 16:01:35,698 INFO L226 Difference]: Without dead ends: 132 [2020-09-24 16:01:35,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=672, Unknown=0, NotChecked=0, Total=992 [2020-09-24 16:01:35,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-24 16:01:35,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 124. [2020-09-24 16:01:35,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-24 16:01:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2020-09-24 16:01:35,706 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 109 [2020-09-24 16:01:35,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:35,707 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2020-09-24 16:01:35,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 16:01:35,707 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2020-09-24 16:01:35,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-24 16:01:35,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:35,709 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:35,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:01:35,710 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:35,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:35,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1236165291, now seen corresponding path program 8 times [2020-09-24 16:01:35,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:35,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895921258] [2020-09-24 16:01:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:35,795 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:35,795 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:35,796 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:35,796 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:35,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 16:01:35,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:35,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 16:01:35,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 16:01:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:35,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 16:01:35,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:36,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:36,079 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:36,079 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:36,079 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:36,080 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:36,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:36,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:36,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:36,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:36,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:36,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:36,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:36,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:36,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 16:01:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:36,088 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:36,088 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:36,089 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:36,089 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:36,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:36,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:36,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:36,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:36,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:36,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:36,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895921258] [2020-09-24 16:01:36,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:36,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 16:01:36,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291278000] [2020-09-24 16:01:36,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 16:01:36,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:36,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 16:01:36,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-09-24 16:01:36,123 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand 20 states. [2020-09-24 16:01:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:36,634 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2020-09-24 16:01:36,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 16:01:36,635 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 119 [2020-09-24 16:01:36,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:36,636 INFO L225 Difference]: With dead ends: 172 [2020-09-24 16:01:36,636 INFO L226 Difference]: Without dead ends: 142 [2020-09-24 16:01:36,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=405, Invalid=855, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 16:01:36,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-24 16:01:36,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2020-09-24 16:01:36,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-24 16:01:36,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2020-09-24 16:01:36,652 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 119 [2020-09-24 16:01:36,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:36,653 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2020-09-24 16:01:36,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 16:01:36,653 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2020-09-24 16:01:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-24 16:01:36,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:36,656 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:36,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:01:36,657 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:36,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:36,657 INFO L82 PathProgramCache]: Analyzing trace with hash 977792571, now seen corresponding path program 9 times [2020-09-24 16:01:36,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:36,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535291929] [2020-09-24 16:01:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:36,769 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:36,770 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:36,770 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:36,770 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:36,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-24 16:01:36,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:36,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 16:01:36,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 16:01:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 16:01:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:37,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:37,097 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:37,098 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:37,098 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:37,098 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:37,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:37,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:37,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:37,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:37,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:37,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:37,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:37,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 16:01:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:37,107 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:37,107 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:37,108 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:37,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:37,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:37,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:37,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:37,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:37,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:37,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:37,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535291929] [2020-09-24 16:01:37,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:37,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 16:01:37,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79929304] [2020-09-24 16:01:37,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 16:01:37,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:37,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 16:01:37,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-09-24 16:01:37,162 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 22 states. [2020-09-24 16:01:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:37,808 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2020-09-24 16:01:37,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 16:01:37,808 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 129 [2020-09-24 16:01:37,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:37,810 INFO L225 Difference]: With dead ends: 182 [2020-09-24 16:01:37,810 INFO L226 Difference]: Without dead ends: 152 [2020-09-24 16:01:37,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=500, Invalid=1060, Unknown=0, NotChecked=0, Total=1560 [2020-09-24 16:01:37,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-24 16:01:37,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2020-09-24 16:01:37,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-24 16:01:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2020-09-24 16:01:37,821 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 129 [2020-09-24 16:01:37,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:37,821 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2020-09-24 16:01:37,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 16:01:37,821 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2020-09-24 16:01:37,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-24 16:01:37,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:37,823 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:37,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 16:01:37,824 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:37,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:37,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1234849, now seen corresponding path program 10 times [2020-09-24 16:01:37,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:37,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090130290] [2020-09-24 16:01:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:37,991 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:37,992 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:37,992 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:37,992 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:37,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-24 16:01:37,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:37,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 16:01:37,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 16:01:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-24 16:01:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:38,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:38,396 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:38,398 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:38,398 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:38,398 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:38,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:38,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:38,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:38,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:38,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:38,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 16:01:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:38,404 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:38,404 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:38,404 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:38,404 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:38,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:38,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:38,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:38,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090130290] [2020-09-24 16:01:38,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:38,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-24 16:01:38,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38727647] [2020-09-24 16:01:38,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-24 16:01:38,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:38,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-24 16:01:38,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-24 16:01:38,438 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand 24 states. [2020-09-24 16:01:39,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:39,109 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2020-09-24 16:01:39,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 16:01:39,109 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 139 [2020-09-24 16:01:39,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:39,111 INFO L225 Difference]: With dead ends: 192 [2020-09-24 16:01:39,111 INFO L226 Difference]: Without dead ends: 162 [2020-09-24 16:01:39,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=605, Invalid=1287, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 16:01:39,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-24 16:01:39,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2020-09-24 16:01:39,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-24 16:01:39,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2020-09-24 16:01:39,119 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 139 [2020-09-24 16:01:39,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:39,119 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2020-09-24 16:01:39,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-24 16:01:39,120 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2020-09-24 16:01:39,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 16:01:39,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:39,122 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:39,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 16:01:39,122 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:39,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:39,123 INFO L82 PathProgramCache]: Analyzing trace with hash 187545991, now seen corresponding path program 11 times [2020-09-24 16:01:39,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:39,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232758407] [2020-09-24 16:01:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:39,267 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:39,268 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:39,268 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:39,268 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:39,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-24 16:01:39,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:39,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 16:01:39,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:39,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 16:01:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 16:01:39,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:39,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:39,707 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:39,707 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:39,708 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:39,708 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:39,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:39,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:39,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:39,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:39,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 16:01:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:39,725 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:39,725 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:39,726 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:39,726 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:39,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:39,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:39,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:39,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:39,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:39,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:39,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:39,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:39,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232758407] [2020-09-24 16:01:39,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:39,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-24 16:01:39,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81528749] [2020-09-24 16:01:39,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-24 16:01:39,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:39,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-24 16:01:39,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-09-24 16:01:39,774 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 26 states. [2020-09-24 16:01:40,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:40,568 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2020-09-24 16:01:40,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-24 16:01:40,568 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 149 [2020-09-24 16:01:40,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:40,570 INFO L225 Difference]: With dead ends: 202 [2020-09-24 16:01:40,570 INFO L226 Difference]: Without dead ends: 172 [2020-09-24 16:01:40,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=720, Invalid=1536, Unknown=0, NotChecked=0, Total=2256 [2020-09-24 16:01:40,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-24 16:01:40,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 164. [2020-09-24 16:01:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 16:01:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2020-09-24 16:01:40,577 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 149 [2020-09-24 16:01:40,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:40,578 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 165 transitions. [2020-09-24 16:01:40,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-24 16:01:40,578 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 165 transitions. [2020-09-24 16:01:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 16:01:40,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:40,581 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:40,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 16:01:40,581 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:40,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:40,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1146876909, now seen corresponding path program 12 times [2020-09-24 16:01:40,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:40,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246747262] [2020-09-24 16:01:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:40,722 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:40,722 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:40,722 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:40,723 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:40,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-24 16:01:40,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:40,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 16:01:40,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 16:01:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 16:01:40,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:41,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:41,108 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:41,108 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:41,108 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:41,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:41,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:41,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:41,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:41,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:41,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:41,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:41,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-24 16:01:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:41,114 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:41,114 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:41,114 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:41,114 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:41,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:41,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:41,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:41,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:41,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:41,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:41,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:41,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:41,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246747262] [2020-09-24 16:01:41,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:41,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-09-24 16:01:41,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146131535] [2020-09-24 16:01:41,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-24 16:01:41,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:41,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-24 16:01:41,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-09-24 16:01:41,149 INFO L87 Difference]: Start difference. First operand 164 states and 165 transitions. Second operand 28 states. [2020-09-24 16:01:41,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:41,909 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2020-09-24 16:01:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-24 16:01:41,910 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 159 [2020-09-24 16:01:41,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:41,911 INFO L225 Difference]: With dead ends: 212 [2020-09-24 16:01:41,911 INFO L226 Difference]: Without dead ends: 182 [2020-09-24 16:01:41,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=845, Invalid=1807, Unknown=0, NotChecked=0, Total=2652 [2020-09-24 16:01:41,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-24 16:01:41,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 174. [2020-09-24 16:01:41,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-24 16:01:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2020-09-24 16:01:41,921 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 159 [2020-09-24 16:01:41,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:41,922 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2020-09-24 16:01:41,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-09-24 16:01:41,922 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2020-09-24 16:01:41,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 16:01:41,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:41,924 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:41,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 16:01:41,925 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:41,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:41,925 INFO L82 PathProgramCache]: Analyzing trace with hash 2141775571, now seen corresponding path program 13 times [2020-09-24 16:01:41,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:41,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712943581] [2020-09-24 16:01:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:42,079 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:42,080 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:42,080 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:42,080 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:42,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 16:01:42,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:42,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 16:01:42,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:42,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 16:01:42,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:42,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-24 16:01:42,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:42,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:42,576 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:42,576 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:42,576 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:42,576 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:42,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:42,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:42,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:42,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:42,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:42,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:42,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-24 16:01:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:42,582 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:42,583 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:42,583 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:42,583 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:42,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:42,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:42,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:42,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:42,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:42,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712943581] [2020-09-24 16:01:42,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:42,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-09-24 16:01:42,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630459581] [2020-09-24 16:01:42,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-09-24 16:01:42,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:42,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-09-24 16:01:42,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-09-24 16:01:42,618 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 30 states. [2020-09-24 16:01:43,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:43,551 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2020-09-24 16:01:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-24 16:01:43,551 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 169 [2020-09-24 16:01:43,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:43,553 INFO L225 Difference]: With dead ends: 222 [2020-09-24 16:01:43,553 INFO L226 Difference]: Without dead ends: 192 [2020-09-24 16:01:43,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=980, Invalid=2100, Unknown=0, NotChecked=0, Total=3080 [2020-09-24 16:01:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-24 16:01:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 184. [2020-09-24 16:01:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-24 16:01:43,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2020-09-24 16:01:43,564 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 169 [2020-09-24 16:01:43,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:43,565 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2020-09-24 16:01:43,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-09-24 16:01:43,565 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2020-09-24 16:01:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-24 16:01:43,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:43,567 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:43,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 16:01:43,568 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:43,568 INFO L82 PathProgramCache]: Analyzing trace with hash 40366649, now seen corresponding path program 14 times [2020-09-24 16:01:43,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:43,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634741667] [2020-09-24 16:01:43,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:43,756 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:43,756 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:43,757 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:43,757 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:43,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 16:01:43,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-24 16:01:43,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 16:01:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-24 16:01:43,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:44,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:44,326 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:44,327 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:44,327 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:44,327 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:44,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:44,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:44,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:44,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:44,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-09-24 16:01:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:44,332 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:44,332 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:44,332 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:44,333 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:44,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:44,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:44,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:44,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:44,371 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:44,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634741667] [2020-09-24 16:01:44,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:44,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-09-24 16:01:44,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019028284] [2020-09-24 16:01:44,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-09-24 16:01:44,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:44,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-09-24 16:01:44,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2020-09-24 16:01:44,374 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand 32 states. [2020-09-24 16:01:45,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:45,395 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2020-09-24 16:01:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-09-24 16:01:45,395 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 179 [2020-09-24 16:01:45,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:45,397 INFO L225 Difference]: With dead ends: 232 [2020-09-24 16:01:45,397 INFO L226 Difference]: Without dead ends: 202 [2020-09-24 16:01:45,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1125, Invalid=2415, Unknown=0, NotChecked=0, Total=3540 [2020-09-24 16:01:45,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-24 16:01:45,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 194. [2020-09-24 16:01:45,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-24 16:01:45,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2020-09-24 16:01:45,404 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 179 [2020-09-24 16:01:45,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:45,405 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2020-09-24 16:01:45,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-09-24 16:01:45,405 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2020-09-24 16:01:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-24 16:01:45,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:45,408 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:45,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 16:01:45,408 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:45,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:45,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1993050593, now seen corresponding path program 15 times [2020-09-24 16:01:45,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:45,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912461202] [2020-09-24 16:01:45,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:45,576 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:45,576 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:45,576 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:45,576 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:45,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 16:01:45,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:45,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 16:01:45,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:45,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 16:01:45,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-24 16:01:45,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:46,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:46,196 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:46,196 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:46,196 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:46,197 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:46,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:46,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:46,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:46,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:46,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:46,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:46,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:46,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:46,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-24 16:01:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:46,205 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:46,205 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:46,206 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:46,206 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:46,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:46,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:46,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:46,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:46,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:46,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:46,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:46,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912461202] [2020-09-24 16:01:46,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:46,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-09-24 16:01:46,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860139087] [2020-09-24 16:01:46,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-24 16:01:46,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:46,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-24 16:01:46,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 16:01:46,282 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand 34 states. [2020-09-24 16:01:47,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:47,367 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2020-09-24 16:01:47,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-24 16:01:47,368 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 189 [2020-09-24 16:01:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:47,370 INFO L225 Difference]: With dead ends: 242 [2020-09-24 16:01:47,370 INFO L226 Difference]: Without dead ends: 212 [2020-09-24 16:01:47,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1280, Invalid=2752, Unknown=0, NotChecked=0, Total=4032 [2020-09-24 16:01:47,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-24 16:01:47,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 204. [2020-09-24 16:01:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-24 16:01:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 205 transitions. [2020-09-24 16:01:47,379 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 205 transitions. Word has length 189 [2020-09-24 16:01:47,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:47,379 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 205 transitions. [2020-09-24 16:01:47,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-24 16:01:47,379 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 205 transitions. [2020-09-24 16:01:47,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 16:01:47,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:47,383 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:47,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 16:01:47,383 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:47,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:47,383 INFO L82 PathProgramCache]: Analyzing trace with hash -839789947, now seen corresponding path program 16 times [2020-09-24 16:01:47,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:47,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394079954] [2020-09-24 16:01:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:47,583 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:47,583 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:47,584 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:47,584 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:47,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 16:01:47,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:47,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-24 16:01:47,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:47,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-24 16:01:47,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:47,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-24 16:01:47,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:48,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:48,215 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:48,215 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:48,215 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:48,215 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:48,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:48,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:48,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:48,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:48,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-24 16:01:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:48,222 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:48,222 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:48,222 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:48,223 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:48,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:48,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:48,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:48,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:48,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:48,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:48,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394079954] [2020-09-24 16:01:48,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:48,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-09-24 16:01:48,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946069123] [2020-09-24 16:01:48,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-09-24 16:01:48,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:48,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-09-24 16:01:48,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 16:01:48,297 INFO L87 Difference]: Start difference. First operand 204 states and 205 transitions. Second operand 36 states. [2020-09-24 16:01:49,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:49,597 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2020-09-24 16:01:49,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-09-24 16:01:49,598 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 199 [2020-09-24 16:01:49,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:49,601 INFO L225 Difference]: With dead ends: 252 [2020-09-24 16:01:49,601 INFO L226 Difference]: Without dead ends: 222 [2020-09-24 16:01:49,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1445, Invalid=3111, Unknown=0, NotChecked=0, Total=4556 [2020-09-24 16:01:49,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-09-24 16:01:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 214. [2020-09-24 16:01:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-24 16:01:49,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2020-09-24 16:01:49,612 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 199 [2020-09-24 16:01:49,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:49,613 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2020-09-24 16:01:49,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-09-24 16:01:49,613 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2020-09-24 16:01:49,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-24 16:01:49,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:49,616 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:49,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 16:01:49,616 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:49,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:49,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1916049557, now seen corresponding path program 17 times [2020-09-24 16:01:49,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:49,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707101572] [2020-09-24 16:01:49,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:49,883 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:49,884 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:49,884 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:49,884 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:49,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-24 16:01:49,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:49,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-24 16:01:49,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-24 16:01:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-24 16:01:49,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:50,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:50,722 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:50,722 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:50,723 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:50,723 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:50,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:50,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:50,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:50,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:50,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-09-24 16:01:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:50,729 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:50,729 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:50,729 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:50,730 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:50,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:50,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:50,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:50,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:50,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 0 proven. 1377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:50,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707101572] [2020-09-24 16:01:50,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:50,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-09-24 16:01:50,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139781900] [2020-09-24 16:01:50,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-09-24 16:01:50,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:50,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-09-24 16:01:50,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 16:01:50,781 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand 38 states. [2020-09-24 16:01:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:52,275 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2020-09-24 16:01:52,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-09-24 16:01:52,276 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 209 [2020-09-24 16:01:52,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:52,278 INFO L225 Difference]: With dead ends: 262 [2020-09-24 16:01:52,278 INFO L226 Difference]: Without dead ends: 232 [2020-09-24 16:01:52,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1620, Invalid=3492, Unknown=0, NotChecked=0, Total=5112 [2020-09-24 16:01:52,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-24 16:01:52,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 224. [2020-09-24 16:01:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-24 16:01:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2020-09-24 16:01:52,289 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 209 [2020-09-24 16:01:52,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:52,289 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2020-09-24 16:01:52,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-09-24 16:01:52,290 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2020-09-24 16:01:52,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-24 16:01:52,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:52,292 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:52,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 16:01:52,292 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:52,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:52,293 INFO L82 PathProgramCache]: Analyzing trace with hash 255104209, now seen corresponding path program 18 times [2020-09-24 16:01:52,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:52,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609443715] [2020-09-24 16:01:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:52,538 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:52,538 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:52,538 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:52,538 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:52,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-24 16:01:52,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:52,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 16:01:52,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:52,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-24 16:01:52,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-24 16:01:52,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:53,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:53,415 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:53,415 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:53,415 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:53,416 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:53,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:53,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:53,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:53,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:53,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:53,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-09-24 16:01:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:53,421 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:53,421 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:53,422 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:53,422 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:53,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:53,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:53,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:53,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:53,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:53,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:53,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:53,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1548 backedges. 0 proven. 1548 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:53,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609443715] [2020-09-24 16:01:53,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:53,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-09-24 16:01:53,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140316575] [2020-09-24 16:01:53,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-09-24 16:01:53,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:53,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-09-24 16:01:53,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2020-09-24 16:01:53,473 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand 40 states. [2020-09-24 16:01:55,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:55,100 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2020-09-24 16:01:55,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-09-24 16:01:55,101 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 219 [2020-09-24 16:01:55,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:55,104 INFO L225 Difference]: With dead ends: 272 [2020-09-24 16:01:55,104 INFO L226 Difference]: Without dead ends: 242 [2020-09-24 16:01:55,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1805, Invalid=3895, Unknown=0, NotChecked=0, Total=5700 [2020-09-24 16:01:55,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-24 16:01:55,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 234. [2020-09-24 16:01:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-24 16:01:55,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2020-09-24 16:01:55,116 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 219 [2020-09-24 16:01:55,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:55,116 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2020-09-24 16:01:55,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-09-24 16:01:55,117 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2020-09-24 16:01:55,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 16:01:55,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:55,120 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:55,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 16:01:55,120 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:55,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:55,121 INFO L82 PathProgramCache]: Analyzing trace with hash 669563575, now seen corresponding path program 19 times [2020-09-24 16:01:55,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:55,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949710494] [2020-09-24 16:01:55,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:55,430 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:55,430 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:55,430 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:55,431 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:55,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-24 16:01:55,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:55,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-24 16:01:55,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:55,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-24 16:01:55,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:01:55,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-09-24 16:01:55,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:56,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:56,309 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:56,310 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:56,310 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:56,310 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:56,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:56,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:56,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:56,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:56,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:56,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:56,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:56,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:56,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-09-24 16:01:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:56,316 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:56,316 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:56,316 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:56,316 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:56,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:56,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:56,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-24 16:01:56,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:56,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:56,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:56,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949710494] [2020-09-24 16:01:56,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:56,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-09-24 16:01:56,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759302514] [2020-09-24 16:01:56,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-09-24 16:01:56,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:56,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-09-24 16:01:56,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 16:01:56,355 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand 42 states. [2020-09-24 16:01:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:58,131 INFO L93 Difference]: Finished difference Result 274 states and 276 transitions. [2020-09-24 16:01:58,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-09-24 16:01:58,131 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 229 [2020-09-24 16:01:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:58,134 INFO L225 Difference]: With dead ends: 274 [2020-09-24 16:01:58,134 INFO L226 Difference]: Without dead ends: 244 [2020-09-24 16:01:58,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2000, Invalid=4320, Unknown=0, NotChecked=0, Total=6320 [2020-09-24 16:01:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-09-24 16:01:58,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2020-09-24 16:01:58,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-09-24 16:01:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 245 transitions. [2020-09-24 16:01:58,143 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 245 transitions. Word has length 229 [2020-09-24 16:01:58,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:58,144 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 245 transitions. [2020-09-24 16:01:58,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-09-24 16:01:58,144 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 245 transitions. [2020-09-24 16:01:58,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-24 16:01:58,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:58,147 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:58,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-24 16:01:58,147 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:58,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:58,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1024771811, now seen corresponding path program 20 times [2020-09-24 16:01:58,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:58,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772557212] [2020-09-24 16:01:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:01:58,250 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:01:58,250 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:01:58,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-24 16:01:58,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:01:58 BoogieIcfgContainer [2020-09-24 16:01:58,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:01:58,288 INFO L168 Benchmark]: Toolchain (without parser) took 28491.85 ms. Allocated memory was 138.4 MB in the beginning and 522.2 MB in the end (delta: 383.8 MB). Free memory was 101.9 MB in the beginning and 362.8 MB in the end (delta: -260.9 MB). Peak memory consumption was 122.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:58,289 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-24 16:01:58,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.19 ms. Allocated memory is still 138.4 MB. Free memory was 101.2 MB in the beginning and 90.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:58,290 INFO L168 Benchmark]: Boogie Preprocessor took 126.01 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 90.9 MB in the beginning and 177.9 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:58,291 INFO L168 Benchmark]: RCFGBuilder took 434.48 ms. Allocated memory is still 200.3 MB. Free memory was 177.9 MB in the beginning and 158.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:58,291 INFO L168 Benchmark]: TraceAbstraction took 27589.86 ms. Allocated memory was 200.3 MB in the beginning and 522.2 MB in the end (delta: 321.9 MB). Free memory was 158.7 MB in the beginning and 362.8 MB in the end (delta: -204.1 MB). Peak memory consumption was 117.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:58,294 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 333.19 ms. Allocated memory is still 138.4 MB. Free memory was 101.2 MB in the beginning and 90.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.01 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 90.9 MB in the beginning and 177.9 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.48 ms. Allocated memory is still 200.3 MB. Free memory was 177.9 MB in the beginning and 158.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27589.86 ms. Allocated memory was 200.3 MB in the beginning and 522.2 MB in the end (delta: 321.9 MB). Free memory was 158.7 MB in the beginning and 362.8 MB in the end (delta: -204.1 MB). Peak memory consumption was 117.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 37]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] struct dummy ad1[20], *ad2; [L16] int i, j, *pa; [L17] j=0 [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND TRUE j<20 [L18] ad1[j].a = __VERIFIER_nondet_int() [L19] ad1[j].b = __VERIFIER_nondet_int() [L17] j++ [L17] COND FALSE !(j<20) [L21] i = __VERIFIER_nondet_int() [L22] COND TRUE i >= 0 && i < 10 [L23] ad2 = ad1 [L24] ad1[i].a = i [L25] pa = &ad1[i].a [L26] EXPR ad2[i].a [L26] i = ad2[i].a + 10 [L27] EXPR \read(*pa) [L27] COND FALSE !(i < *pa) [L30] CALL, EXPR check(ad1, i) [L10] EXPR ad1[b].a [L10] return ad1[b].a == b; [L30] RET, EXPR check(ad1, i) [L30] COND TRUE !check(ad1, i) [L37] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.4s, OverallIterations: 22, TraceHistogramMax: 20, AutomataDifference: 15.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1023 SDtfs, 1848 SDslu, 12891 SDs, 0 SdLazy, 5575 SolverSat, 301 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 906 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 801 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7391 ImplicationChecksByTransitivity, 15.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 152 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 2956 NumberOfCodeBlocks, 2956 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2696 ConstructedInterpolants, 0 QuantifiedInterpolants, 1089560 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 2 PerfectInterpolantSequences, 0/11590 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 incorrect! Received shutdown request...