/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 --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/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:31:02,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:31:02,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:31:03,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:31:03,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:31:03,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:31:03,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:31:03,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:31:03,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:31:03,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:31:03,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:31:03,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:31:03,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:31:03,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:31:03,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:31:03,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:31:03,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:31:03,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:31:03,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:31:03,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:31:03,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:31:03,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:31:03,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:31:03,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:31:03,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:31:03,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:31:03,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:31:03,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:31:03,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:31:03,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:31:03,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:31:03,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:31:03,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:31:03,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:31:03,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:31:03,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:31:03,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:31:03,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:31:03,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:31:03,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:31:03,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:31:03,114 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 [2020-09-21 11:31:03,164 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:31:03,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:31:03,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:31:03,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:31:03,167 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:31:03,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:31:03,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:31:03,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:31:03,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:31:03,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:31:03,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:31:03,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:31:03,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:31:03,171 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:31:03,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:31:03,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:31:03,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:31:03,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:31:03,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:31:03,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:31:03,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:31:03,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:31:03,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:31:03,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:31:03,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:31:03,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:31:03,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:31:03,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:31:03,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:31:03,175 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.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; [2020-09-21 11:31:03,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:31:03,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:31:03,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:31:03,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:31:03,679 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:31:03,681 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2020-09-21 11:31:03,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9bccc366/243088a8675f427f9e91a758695fe5e7/FLAG6f7daf7d9 [2020-09-21 11:31:04,332 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:31:04,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/lu.cmp.c [2020-09-21 11:31:04,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9bccc366/243088a8675f427f9e91a758695fe5e7/FLAG6f7daf7d9 [2020-09-21 11:31:04,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9bccc366/243088a8675f427f9e91a758695fe5e7 [2020-09-21 11:31:04,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:31:04,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:31:04,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:31:04,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:31:04,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:31:04,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:31:04" (1/1) ... [2020-09-21 11:31:04,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448d4077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:04, skipping insertion in model container [2020-09-21 11:31:04,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:31:04" (1/1) ... [2020-09-21 11:31:04,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:31:04,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:31:04,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:31:04,994 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:31:05,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:31:05,172 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:31:05,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:05 WrapperNode [2020-09-21 11:31:05,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:31:05,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:31:05,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:31:05,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:31:05,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:05" (1/1) ... [2020-09-21 11:31:05,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:05" (1/1) ... [2020-09-21 11:31:05,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:05" (1/1) ... [2020-09-21 11:31:05,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:05" (1/1) ... [2020-09-21 11:31:05,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:05" (1/1) ... [2020-09-21 11:31:05,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:05" (1/1) ... [2020-09-21 11:31:05,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:05" (1/1) ... [2020-09-21 11:31:05,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:31:05,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:31:05,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:31:05,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:31:05,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:05" (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 [2020-09-21 11:31:05,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:31:05,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:31:05,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:31:05,315 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2020-09-21 11:31:05,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:31:05,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2020-09-21 11:31:05,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:31:05,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:31:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2020-09-21 11:31:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2020-09-21 11:31:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:31:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:31:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:31:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:31:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:31:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:31:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:31:05,794 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:31:05,794 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-21 11:31:05,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:31:05 BoogieIcfgContainer [2020-09-21 11:31:05,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:31:05,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:31:05,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:31:05,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:31:05,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:31:04" (1/3) ... [2020-09-21 11:31:05,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfdbc98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:31:05, skipping insertion in model container [2020-09-21 11:31:05,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:05" (2/3) ... [2020-09-21 11:31:05,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfdbc98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:31:05, skipping insertion in model container [2020-09-21 11:31:05,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:31:05" (3/3) ... [2020-09-21 11:31:05,813 INFO L109 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2020-09-21 11:31:05,824 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:31:05,835 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:31:05,856 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:31:05,885 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:31:05,886 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:31:05,886 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:31:05,886 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:31:05,886 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:31:05,886 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:31:05,886 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:31:05,886 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:31:05,910 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-09-21 11:31:05,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 11:31:05,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:05,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:05,921 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:05,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:05,929 INFO L82 PathProgramCache]: Analyzing trace with hash 406725423, now seen corresponding path program 1 times [2020-09-21 11:31:05,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:05,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48593348] [2020-09-21 11:31:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:06,110 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:06,111 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:06,111 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:06,111 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:06,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:31:06,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:06,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:31:06,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:06,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:06,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:31:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:06,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:06,228 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:06,229 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:06,229 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:06,230 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:06,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:06,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:06,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:06,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:06,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:06,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:06,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48593348] [2020-09-21 11:31:06,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:06,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:31:06,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890694057] [2020-09-21 11:31:06,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:31:06,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:06,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:31:06,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:31:06,311 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2020-09-21 11:31:06,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:06,549 INFO L93 Difference]: Finished difference Result 127 states and 191 transitions. [2020-09-21 11:31:06,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:31:06,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-21 11:31:06,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:06,565 INFO L225 Difference]: With dead ends: 127 [2020-09-21 11:31:06,565 INFO L226 Difference]: Without dead ends: 24 [2020-09-21 11:31:06,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:31:06,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-21 11:31:06,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-09-21 11:31:06,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-21 11:31:06,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-09-21 11:31:06,633 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2020-09-21 11:31:06,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:06,634 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-09-21 11:31:06,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:31:06,634 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-09-21 11:31:06,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 11:31:06,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:06,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:06,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:31:06,636 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:06,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:06,637 INFO L82 PathProgramCache]: Analyzing trace with hash 394719650, now seen corresponding path program 1 times [2020-09-21 11:31:06,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:06,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803686993] [2020-09-21 11:31:06,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:06,690 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:06,691 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:06,691 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:06,691 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:06,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:31:06,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:06,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:31:06,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:06,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:31:06,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:06,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:31:06,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:06,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:06,815 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:06,815 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:06,815 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:06,817 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:06,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:06,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:06,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:31:06,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:06,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:06,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:06,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:31:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:06,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803686993] [2020-09-21 11:31:06,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:06,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:31:06,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927997660] [2020-09-21 11:31:06,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:31:06,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:06,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:31:06,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:06,863 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-09-21 11:31:07,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:07,035 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-09-21 11:31:07,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:31:07,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-21 11:31:07,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:07,037 INFO L225 Difference]: With dead ends: 40 [2020-09-21 11:31:07,037 INFO L226 Difference]: Without dead ends: 26 [2020-09-21 11:31:07,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:31:07,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-21 11:31:07,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2020-09-21 11:31:07,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-21 11:31:07,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-09-21 11:31:07,046 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2020-09-21 11:31:07,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:07,047 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-09-21 11:31:07,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:31:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-09-21 11:31:07,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 11:31:07,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:07,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:07,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:31:07,048 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:07,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:07,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1180233829, now seen corresponding path program 1 times [2020-09-21 11:31:07,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:07,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561427978] [2020-09-21 11:31:07,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:07,105 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:07,105 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:07,105 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:07,105 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:07,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 11:31:07,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 11:31:07,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:07,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:31:07,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:07,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:31:07,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:07,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:07,232 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:07,233 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:07,233 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:07,233 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:07,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:07,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:07,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:07,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:07,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:07,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:07,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:07,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561427978] [2020-09-21 11:31:07,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:07,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:31:07,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982223582] [2020-09-21 11:31:07,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:31:07,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:07,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:31:07,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:07,250 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2020-09-21 11:31:07,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:07,421 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-21 11:31:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:31:07,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-21 11:31:07,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:07,423 INFO L225 Difference]: With dead ends: 50 [2020-09-21 11:31:07,423 INFO L226 Difference]: Without dead ends: 35 [2020-09-21 11:31:07,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:31:07,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-21 11:31:07,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2020-09-21 11:31:07,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-21 11:31:07,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-09-21 11:31:07,431 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 16 [2020-09-21 11:31:07,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:07,432 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-09-21 11:31:07,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:31:07,432 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-09-21 11:31:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 11:31:07,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:07,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:07,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:31:07,434 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:07,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:07,434 INFO L82 PathProgramCache]: Analyzing trace with hash -370887203, now seen corresponding path program 1 times [2020-09-21 11:31:07,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:07,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792043831] [2020-09-21 11:31:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:07,471 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:07,471 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:07,471 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:07,472 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:07,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 11:31:07,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:07,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:31:07,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:07,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:31:07,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:07,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:31:07,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:07,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:07,559 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:07,559 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:07,560 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:07,560 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:07,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:07,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:07,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:07,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:07,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:07,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:07,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:07,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:07,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:31:07,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792043831] [2020-09-21 11:31:07,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:07,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:31:07,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090922510] [2020-09-21 11:31:07,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:31:07,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:07,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:31:07,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:31:07,575 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2020-09-21 11:31:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:07,778 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-09-21 11:31:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:31:07,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-21 11:31:07,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:07,780 INFO L225 Difference]: With dead ends: 37 [2020-09-21 11:31:07,780 INFO L226 Difference]: Without dead ends: 35 [2020-09-21 11:31:07,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:31:07,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-21 11:31:07,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-09-21 11:31:07,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-21 11:31:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-09-21 11:31:07,790 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 16 [2020-09-21 11:31:07,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:07,790 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-09-21 11:31:07,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:31:07,790 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-09-21 11:31:07,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 11:31:07,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:07,792 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:07,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:31:07,792 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:07,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:07,793 INFO L82 PathProgramCache]: Analyzing trace with hash 442817577, now seen corresponding path program 1 times [2020-09-21 11:31:07,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:07,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939617108] [2020-09-21 11:31:07,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:07,872 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:07,872 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:07,872 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:07,873 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:07,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 11:31:07,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:07,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:31:07,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:07,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:31:07,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:07,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:31:07,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:07,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:07,947 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:07,947 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:07,947 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:07,947 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:07,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:07,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:07,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:07,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:07,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:07,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:07,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:07,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:31:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:07,958 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:07,958 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:07,958 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:07,959 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:07,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:07,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:07,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:07,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:31:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:07,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:31:07,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939617108] [2020-09-21 11:31:07,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:31:07,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 11:31:07,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600205999] [2020-09-21 11:31:07,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:31:07,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:07,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:31:07,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:31:07,967 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-09-21 11:31:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:08,119 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-09-21 11:31:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:31:08,120 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-21 11:31:08,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:08,123 INFO L225 Difference]: With dead ends: 66 [2020-09-21 11:31:08,123 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 11:31:08,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:31:08,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 11:31:08,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-21 11:31:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:31:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-09-21 11:31:08,134 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 29 [2020-09-21 11:31:08,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:08,134 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-09-21 11:31:08,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:31:08,134 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-09-21 11:31:08,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 11:31:08,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:08,136 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:08,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:31:08,136 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:08,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:08,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1798981815, now seen corresponding path program 2 times [2020-09-21 11:31:08,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:08,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255730840] [2020-09-21 11:31:08,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:08,168 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:08,168 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:08,168 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:08,169 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:08,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 11:31:08,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:08,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:31:08,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:31:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:31:08,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:08,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:08,280 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:08,281 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:08,281 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:08,281 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:08,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:08,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:08,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:08,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:08,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 11:31:08,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:31:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:08,295 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:08,295 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:08,295 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:08,296 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:08,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:08,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:08,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:08,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:31:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 11:31:08,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255730840] [2020-09-21 11:31:08,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:31:08,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:31:08,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650587630] [2020-09-21 11:31:08,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:31:08,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:08,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:31:08,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:31:08,304 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 7 states. [2020-09-21 11:31:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:08,487 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2020-09-21 11:31:08,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:31:08,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-09-21 11:31:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:08,489 INFO L225 Difference]: With dead ends: 78 [2020-09-21 11:31:08,489 INFO L226 Difference]: Without dead ends: 54 [2020-09-21 11:31:08,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:31:08,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-21 11:31:08,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-09-21 11:31:08,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-21 11:31:08,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-21 11:31:08,498 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 37 [2020-09-21 11:31:08,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:08,499 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-21 11:31:08,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:31:08,499 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-21 11:31:08,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-21 11:31:08,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:08,501 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:08,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:31:08,501 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:08,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:08,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1724935017, now seen corresponding path program 3 times [2020-09-21 11:31:08,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:08,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102383009] [2020-09-21 11:31:08,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:08,533 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:08,533 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:08,533 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:08,533 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:08,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:31:08,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:08,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:31:08,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:31:08,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:08,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:31:08,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:08,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:08,618 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:08,619 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:08,619 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:08,619 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:08,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:08,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:08,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:08,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:08,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:08,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:08,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:08,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:08,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 11:31:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:08,629 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:08,629 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:08,629 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:08,630 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:08,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:08,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:08,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:31:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:08,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 46 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-21 11:31:08,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102383009] [2020-09-21 11:31:08,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:31:08,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:31:08,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479845386] [2020-09-21 11:31:08,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:31:08,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:08,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:31:08,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:31:08,639 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 8 states. [2020-09-21 11:31:08,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:08,909 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2020-09-21 11:31:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:31:08,910 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-09-21 11:31:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:08,911 INFO L225 Difference]: With dead ends: 90 [2020-09-21 11:31:08,911 INFO L226 Difference]: Without dead ends: 62 [2020-09-21 11:31:08,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:31:08,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-21 11:31:08,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-21 11:31:08,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-21 11:31:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-09-21 11:31:08,929 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 45 [2020-09-21 11:31:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:08,932 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-09-21 11:31:08,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:31:08,932 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-09-21 11:31:08,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 11:31:08,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:08,934 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:08,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:31:08,934 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:08,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:08,935 INFO L82 PathProgramCache]: Analyzing trace with hash 192379017, now seen corresponding path program 4 times [2020-09-21 11:31:08,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:08,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847672662] [2020-09-21 11:31:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:08,967 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:08,967 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:08,968 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:08,968 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:08,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 11:31:08,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:08,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:31:08,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:08,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:31:08,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:08,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 11:31:08,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:09,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:09,070 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:09,070 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:09,070 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:09,070 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:09,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:09,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:09,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:09,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:09,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:09,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:09,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-21 11:31:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:09,081 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:09,081 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:09,081 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:09,081 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:09,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:09,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:09,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:09,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:09,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:31:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:09,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 76 proven. 28 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-21 11:31:09,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847672662] [2020-09-21 11:31:09,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:31:09,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:31:09,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65442715] [2020-09-21 11:31:09,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:31:09,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:09,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:31:09,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:31:09,092 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 9 states. [2020-09-21 11:31:09,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:09,367 INFO L93 Difference]: Finished difference Result 102 states and 122 transitions. [2020-09-21 11:31:09,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:31:09,367 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-09-21 11:31:09,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:09,368 INFO L225 Difference]: With dead ends: 102 [2020-09-21 11:31:09,369 INFO L226 Difference]: Without dead ends: 70 [2020-09-21 11:31:09,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-09-21 11:31:09,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-21 11:31:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-09-21 11:31:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-21 11:31:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-09-21 11:31:09,392 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 53 [2020-09-21 11:31:09,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:09,392 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-09-21 11:31:09,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:31:09,392 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-09-21 11:31:09,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 11:31:09,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:09,393 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:09,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:31:09,397 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:09,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:09,397 INFO L82 PathProgramCache]: Analyzing trace with hash -915579223, now seen corresponding path program 5 times [2020-09-21 11:31:09,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:09,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793817612] [2020-09-21 11:31:09,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:09,460 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:09,460 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:09,460 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:09,460 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:09,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 11:31:09,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:09,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:31:09,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:09,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:31:09,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:09,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 11:31:09,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:09,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:09,603 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:09,603 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:09,604 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:09,605 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:09,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:09,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:09,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:09,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:09,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:09,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:09,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:09,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:31:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:09,622 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:09,622 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:09,622 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:09,622 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:09,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:09,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:09,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:09,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:31:09,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:09,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 114 proven. 45 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-09-21 11:31:09,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793817612] [2020-09-21 11:31:09,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:31:09,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 11:31:09,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186896577] [2020-09-21 11:31:09,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 11:31:09,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:09,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 11:31:09,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:31:09,670 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 10 states. [2020-09-21 11:31:09,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:09,924 INFO L93 Difference]: Finished difference Result 108 states and 129 transitions. [2020-09-21 11:31:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:31:09,925 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2020-09-21 11:31:09,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:09,926 INFO L225 Difference]: With dead ends: 108 [2020-09-21 11:31:09,926 INFO L226 Difference]: Without dead ends: 72 [2020-09-21 11:31:09,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2020-09-21 11:31:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-21 11:31:09,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-21 11:31:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-21 11:31:09,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2020-09-21 11:31:09,947 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 61 [2020-09-21 11:31:09,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:09,948 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2020-09-21 11:31:09,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 11:31:09,948 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2020-09-21 11:31:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-21 11:31:09,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:09,951 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:09,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:31:09,951 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:09,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:09,954 INFO L82 PathProgramCache]: Analyzing trace with hash -752575031, now seen corresponding path program 6 times [2020-09-21 11:31:09,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:09,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43537372] [2020-09-21 11:31:09,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:10,007 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:10,008 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:10,008 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:10,008 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:10,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-21 11:31:10,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:10,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:31:10,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:31:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:10,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:31:10,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:10,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:10,172 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:10,173 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:10,173 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:10,173 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:10,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:10,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:10,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:10,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:10,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:10,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:10,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:10,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:31:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:10,190 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:10,190 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:10,191 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:10,191 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:10,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:10,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:31:10,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 150 proven. 41 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-09-21 11:31:10,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43537372] [2020-09-21 11:31:10,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:31:10,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:31:10,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115354263] [2020-09-21 11:31:10,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:31:10,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:10,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:31:10,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:31:10,207 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand 7 states. [2020-09-21 11:31:10,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:10,512 INFO L93 Difference]: Finished difference Result 168 states and 196 transitions. [2020-09-21 11:31:10,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:31:10,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-09-21 11:31:10,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:10,514 INFO L225 Difference]: With dead ends: 168 [2020-09-21 11:31:10,514 INFO L226 Difference]: Without dead ends: 133 [2020-09-21 11:31:10,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:31:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-21 11:31:10,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 81. [2020-09-21 11:31:10,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-21 11:31:10,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2020-09-21 11:31:10,530 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 69 [2020-09-21 11:31:10,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:10,530 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2020-09-21 11:31:10,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:31:10,530 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2020-09-21 11:31:10,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-21 11:31:10,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:10,535 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:10,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:31:10,535 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:10,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:10,536 INFO L82 PathProgramCache]: Analyzing trace with hash -618561525, now seen corresponding path program 7 times [2020-09-21 11:31:10,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:10,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826740063] [2020-09-21 11:31:10,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:10,570 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:10,570 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:10,570 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:10,570 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:10,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-21 11:31:10,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:10,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:31:10,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:31:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-21 11:31:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:10,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:10,664 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:10,664 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:10,665 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:10,665 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:10,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:10,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:10,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:10,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:10,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:10,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:31:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:10,674 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:10,675 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:10,675 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:10,675 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:10,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:10,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:10,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:10,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:10,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:10,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:10,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:10,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 2 proven. 159 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-09-21 11:31:10,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826740063] [2020-09-21 11:31:10,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:31:10,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:31:10,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021101178] [2020-09-21 11:31:10,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:31:10,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:10,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:31:10,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:31:10,692 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand 7 states. [2020-09-21 11:31:10,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:10,892 INFO L93 Difference]: Finished difference Result 109 states and 127 transitions. [2020-09-21 11:31:10,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:31:10,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-09-21 11:31:10,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:10,894 INFO L225 Difference]: With dead ends: 109 [2020-09-21 11:31:10,894 INFO L226 Difference]: Without dead ends: 107 [2020-09-21 11:31:10,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:31:10,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-21 11:31:10,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2020-09-21 11:31:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-21 11:31:10,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-09-21 11:31:10,906 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 69 [2020-09-21 11:31:10,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:10,907 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-09-21 11:31:10,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:31:10,907 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-09-21 11:31:10,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-21 11:31:10,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:10,909 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:10,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:31:10,909 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:10,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:10,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1650306840, now seen corresponding path program 8 times [2020-09-21 11:31:10,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:10,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543642740] [2020-09-21 11:31:10,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:10,952 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:10,953 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:10,953 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:10,953 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:10,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-21 11:31:10,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:10,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:31:10,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:31:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-21 11:31:10,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:11,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:11,083 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:11,083 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:11,084 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:11,084 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:11,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:11,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:11,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:11,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:11,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:11,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:31:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:11,093 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:11,093 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:11,094 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:11,094 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:11,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:11,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:11,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:11,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:11,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:11,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:11,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:11,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:11,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 11:31:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:11,101 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:11,101 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:11,101 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:11,101 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:11,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:11,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:11,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:11,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:11,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:11,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:11,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 4 proven. 479 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-09-21 11:31:11,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543642740] [2020-09-21 11:31:11,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:31:11,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:31:11,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827129518] [2020-09-21 11:31:11,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:31:11,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:11,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:31:11,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:31:11,120 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 8 states. [2020-09-21 11:31:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:11,370 INFO L93 Difference]: Finished difference Result 142 states and 167 transitions. [2020-09-21 11:31:11,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:31:11,371 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2020-09-21 11:31:11,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:11,372 INFO L225 Difference]: With dead ends: 142 [2020-09-21 11:31:11,372 INFO L226 Difference]: Without dead ends: 140 [2020-09-21 11:31:11,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:31:11,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-21 11:31:11,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2020-09-21 11:31:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-21 11:31:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2020-09-21 11:31:11,384 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 102 [2020-09-21 11:31:11,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:11,385 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2020-09-21 11:31:11,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:31:11,385 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2020-09-21 11:31:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-21 11:31:11,387 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:11,387 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 22, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:11,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:31:11,388 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:11,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1572842069, now seen corresponding path program 9 times [2020-09-21 11:31:11,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:11,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705235797] [2020-09-21 11:31:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:11,434 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:11,434 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:11,434 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:11,434 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:11,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-21 11:31:11,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:11,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:31:11,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:31:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-21 11:31:11,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:11,628 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:11,628 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:11,628 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:11,629 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:11,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:11,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:11,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:11,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:11,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:31:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:11,641 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:11,642 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:11,642 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:11,642 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:11,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:11,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:11,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:11,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:11,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:11,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:11,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 11:31:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:11,651 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:11,652 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:11,652 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:11,652 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:11,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:11,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:11,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:11,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:11,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-21 11:31:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:11,660 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:11,660 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:11,661 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:11,661 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:11,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:11,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:11,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:31:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:11,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 619 proven. 297 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2020-09-21 11:31:11,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705235797] [2020-09-21 11:31:11,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:31:11,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:31:11,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011125036] [2020-09-21 11:31:11,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:31:11,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:11,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:31:11,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:31:11,718 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand 9 states. [2020-09-21 11:31:12,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:12,244 INFO L93 Difference]: Finished difference Result 239 states and 277 transitions. [2020-09-21 11:31:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 11:31:12,245 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 135 [2020-09-21 11:31:12,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:12,247 INFO L225 Difference]: With dead ends: 239 [2020-09-21 11:31:12,247 INFO L226 Difference]: Without dead ends: 176 [2020-09-21 11:31:12,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-09-21 11:31:12,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-21 11:31:12,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 138. [2020-09-21 11:31:12,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-21 11:31:12,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 160 transitions. [2020-09-21 11:31:12,259 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 160 transitions. Word has length 135 [2020-09-21 11:31:12,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:12,260 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 160 transitions. [2020-09-21 11:31:12,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:31:12,260 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 160 transitions. [2020-09-21 11:31:12,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-21 11:31:12,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:12,262 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 21, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:12,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:31:12,262 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:12,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:12,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2016742743, now seen corresponding path program 10 times [2020-09-21 11:31:12,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:12,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149891051] [2020-09-21 11:31:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:12,315 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:12,315 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:12,315 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:12,315 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:12,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-21 11:31:12,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:12,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:31:12,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:31:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:12,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-21 11:31:12,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:12,462 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:12,463 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:12,463 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:12,463 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:12,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:12,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:12,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:12,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:12,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:12,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:31:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:12,473 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:12,473 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:12,474 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:12,474 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:12,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:12,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:12,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:12,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:12,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:12,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 11:31:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:12,484 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:12,484 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:12,484 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:12,484 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:12,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:12,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:12,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:12,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:12,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:12,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:12,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-21 11:31:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:12,493 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:12,493 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:12,493 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:12,493 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:12,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:12,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:12,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:12,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:12,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:12,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:12,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:12,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 6 proven. 960 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-09-21 11:31:12,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149891051] [2020-09-21 11:31:12,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:31:12,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:31:12,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417129116] [2020-09-21 11:31:12,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:31:12,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:12,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:31:12,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:31:12,532 INFO L87 Difference]: Start difference. First operand 138 states and 160 transitions. Second operand 9 states. [2020-09-21 11:31:12,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:12,801 INFO L93 Difference]: Finished difference Result 175 states and 204 transitions. [2020-09-21 11:31:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:31:12,801 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 135 [2020-09-21 11:31:12,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:12,803 INFO L225 Difference]: With dead ends: 175 [2020-09-21 11:31:12,803 INFO L226 Difference]: Without dead ends: 173 [2020-09-21 11:31:12,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:31:12,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-21 11:31:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2020-09-21 11:31:12,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-21 11:31:12,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 200 transitions. [2020-09-21 11:31:12,815 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 200 transitions. Word has length 135 [2020-09-21 11:31:12,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:12,815 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 200 transitions. [2020-09-21 11:31:12,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:31:12,815 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 200 transitions. [2020-09-21 11:31:12,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-21 11:31:12,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:12,817 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 27, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:12,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 11:31:12,818 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:12,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:12,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1916434374, now seen corresponding path program 11 times [2020-09-21 11:31:12,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:12,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980216810] [2020-09-21 11:31:12,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:12,879 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:12,879 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:12,880 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:12,880 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:12,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-21 11:31:12,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:12,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:31:12,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:31:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-21 11:31:12,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:13,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:13,033 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:13,033 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:13,034 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:13,034 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:13,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:13,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:13,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:13,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:13,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:13,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:13,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:13,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:13,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:31:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:13,049 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:13,049 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:13,049 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:13,049 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:13,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:13,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:13,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:13,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:13,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:13,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 11:31:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:13,058 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:13,058 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:13,059 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:13,059 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:13,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:13,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:13,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:13,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:13,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:13,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:13,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-21 11:31:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:13,068 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:13,068 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:13,069 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:13,069 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:13,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:13,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:13,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:13,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:13,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:13,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:13,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:13,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-21 11:31:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:13,077 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:13,078 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:13,078 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:13,078 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:13,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:13,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:13,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:13,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:13,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:13,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 8 proven. 1602 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-09-21 11:31:13,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980216810] [2020-09-21 11:31:13,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:31:13,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 11:31:13,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752945941] [2020-09-21 11:31:13,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 11:31:13,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:13,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 11:31:13,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:31:13,149 INFO L87 Difference]: Start difference. First operand 171 states and 200 transitions. Second operand 10 states. [2020-09-21 11:31:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:13,488 INFO L93 Difference]: Finished difference Result 208 states and 244 transitions. [2020-09-21 11:31:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:31:13,489 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 168 [2020-09-21 11:31:13,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:13,491 INFO L225 Difference]: With dead ends: 208 [2020-09-21 11:31:13,492 INFO L226 Difference]: Without dead ends: 206 [2020-09-21 11:31:13,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:31:13,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-21 11:31:13,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2020-09-21 11:31:13,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-21 11:31:13,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 240 transitions. [2020-09-21 11:31:13,516 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 240 transitions. Word has length 168 [2020-09-21 11:31:13,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:13,516 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 240 transitions. [2020-09-21 11:31:13,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 11:31:13,516 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 240 transitions. [2020-09-21 11:31:13,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-21 11:31:13,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:13,520 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 33, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:13,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 11:31:13,520 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:13,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:13,521 INFO L82 PathProgramCache]: Analyzing trace with hash -886069047, now seen corresponding path program 12 times [2020-09-21 11:31:13,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:13,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520984783] [2020-09-21 11:31:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:13,668 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:13,669 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:13,669 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:13,670 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:13,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-21 11:31:13,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:13,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:31:13,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:31:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-09-21 11:31:13,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:13,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:13,874 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:13,874 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:13,875 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:13,875 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:13,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:13,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:13,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:13,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:13,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:13,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:13,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:13,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:13,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:31:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:13,889 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:13,890 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:13,890 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:13,890 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:13,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:13,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:13,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:13,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:13,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:13,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:13,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:13,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 11:31:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:13,897 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:13,897 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:13,897 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:13,897 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:13,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:13,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:13,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:13,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:13,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:13,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:13,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:13,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:13,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-21 11:31:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:13,905 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:13,906 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:13,906 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:13,907 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:13,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:13,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:13,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:13,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:13,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:13,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-21 11:31:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:13,915 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:13,916 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:13,916 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:13,916 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:13,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:13,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:13,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:13,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:13,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:13,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-21 11:31:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:13,927 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:13,927 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:13,927 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:13,928 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:13,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:13,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:13,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:31:13,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:13,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:13,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:13,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:13,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2851 backedges. 10 proven. 790 refuted. 0 times theorem prover too weak. 2051 trivial. 0 not checked. [2020-09-21 11:31:14,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520984783] [2020-09-21 11:31:14,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:31:14,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:31:14,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210175349] [2020-09-21 11:31:14,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:31:14,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:14,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:31:14,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:31:14,016 INFO L87 Difference]: Start difference. First operand 204 states and 240 transitions. Second operand 7 states. [2020-09-21 11:31:14,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:14,241 INFO L93 Difference]: Finished difference Result 204 states and 240 transitions. [2020-09-21 11:31:14,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:31:14,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-09-21 11:31:14,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:14,243 INFO L225 Difference]: With dead ends: 204 [2020-09-21 11:31:14,244 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:31:14,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:31:14,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:31:14,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:31:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:31:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:31:14,247 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 201 [2020-09-21 11:31:14,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:14,247 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:31:14,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:31:14,248 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:31:14,248 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:31:14,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 11:31:14,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:31:14,522 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 33 [2020-09-21 11:31:14,782 INFO L271 CegarLoopResult]: At program point L118(line 118) the Hoare annotation is: true [2020-09-21 11:31:14,783 INFO L268 CegarLoopResult]: For program point L118-1(line 118) no Hoare annotation was computed. [2020-09-21 11:31:14,783 INFO L268 CegarLoopResult]: For program point L127-2(lines 127 133) no Hoare annotation was computed. [2020-09-21 11:31:14,783 INFO L271 CegarLoopResult]: At program point L127-3(lines 127 133) the Hoare annotation is: true [2020-09-21 11:31:14,783 INFO L268 CegarLoopResult]: For program point L119-2(lines 119 126) no Hoare annotation was computed. [2020-09-21 11:31:14,783 INFO L271 CegarLoopResult]: At program point L119-3(lines 119 126) the Hoare annotation is: true [2020-09-21 11:31:14,784 INFO L268 CegarLoopResult]: For program point L119-4(lines 119 126) no Hoare annotation was computed. [2020-09-21 11:31:14,784 INFO L268 CegarLoopResult]: For program point L144-2(lines 144 150) no Hoare annotation was computed. [2020-09-21 11:31:14,784 INFO L271 CegarLoopResult]: At program point L144-3(lines 144 150) the Hoare annotation is: true [2020-09-21 11:31:14,784 INFO L268 CegarLoopResult]: For program point L144-4(lines 144 150) no Hoare annotation was computed. [2020-09-21 11:31:14,784 INFO L268 CegarLoopResult]: For program point L136-2(lines 136 142) no Hoare annotation was computed. [2020-09-21 11:31:14,784 INFO L271 CegarLoopResult]: At program point L136-3(lines 136 142) the Hoare annotation is: true [2020-09-21 11:31:14,784 INFO L268 CegarLoopResult]: For program point L136-4(lines 136 142) no Hoare annotation was computed. [2020-09-21 11:31:14,785 INFO L268 CegarLoopResult]: For program point ludcmpEXIT(lines 109 153) no Hoare annotation was computed. [2020-09-21 11:31:14,785 INFO L264 CegarLoopResult]: At program point ludcmpENTRY(lines 109 153) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-21 11:31:14,785 INFO L268 CegarLoopResult]: For program point ludcmpFINAL(lines 109 153) no Hoare annotation was computed. [2020-09-21 11:31:14,785 INFO L268 CegarLoopResult]: For program point L130-2(lines 130 131) no Hoare annotation was computed. [2020-09-21 11:31:14,785 INFO L271 CegarLoopResult]: At program point L130-3(lines 130 131) the Hoare annotation is: true [2020-09-21 11:31:14,786 INFO L268 CegarLoopResult]: For program point L130-4(lines 130 131) no Hoare annotation was computed. [2020-09-21 11:31:14,786 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-09-21 11:31:14,786 INFO L268 CegarLoopResult]: For program point L122-1(lines 122 124) no Hoare annotation was computed. [2020-09-21 11:31:14,786 INFO L268 CegarLoopResult]: For program point L147-2(lines 147 148) no Hoare annotation was computed. [2020-09-21 11:31:14,786 INFO L271 CegarLoopResult]: At program point L147-3(lines 147 148) the Hoare annotation is: true [2020-09-21 11:31:14,786 INFO L268 CegarLoopResult]: For program point L147-4(lines 147 148) no Hoare annotation was computed. [2020-09-21 11:31:14,787 INFO L268 CegarLoopResult]: For program point L139-2(lines 139 140) no Hoare annotation was computed. [2020-09-21 11:31:14,787 INFO L271 CegarLoopResult]: At program point L139-3(lines 139 140) the Hoare annotation is: true [2020-09-21 11:31:14,787 INFO L268 CegarLoopResult]: For program point L139-4(lines 139 140) no Hoare annotation was computed. [2020-09-21 11:31:14,787 INFO L268 CegarLoopResult]: For program point L123-2(lines 123 124) no Hoare annotation was computed. [2020-09-21 11:31:14,787 INFO L271 CegarLoopResult]: At program point L123-3(lines 123 124) the Hoare annotation is: true [2020-09-21 11:31:14,787 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-09-21 11:31:14,788 INFO L268 CegarLoopResult]: For program point L116-2(lines 116 134) no Hoare annotation was computed. [2020-09-21 11:31:14,788 INFO L271 CegarLoopResult]: At program point L116-3(lines 116 134) the Hoare annotation is: true [2020-09-21 11:31:14,788 INFO L268 CegarLoopResult]: For program point L116-4(lines 116 134) no Hoare annotation was computed. [2020-09-21 11:31:14,788 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:31:14,788 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#x~0.offset| |old(~#x~0.offset)|) (= |old(#memory_real)| |#memory_real|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |old(#length)| |#length|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-21 11:31:14,789 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:31:14,789 INFO L268 CegarLoopResult]: For program point L78(lines 78 79) no Hoare annotation was computed. [2020-09-21 11:31:14,789 INFO L268 CegarLoopResult]: For program point L78-2(lines 78 79) no Hoare annotation was computed. [2020-09-21 11:31:14,789 INFO L268 CegarLoopResult]: For program point fabsEXIT(lines 74 81) no Hoare annotation was computed. [2020-09-21 11:31:14,789 INFO L271 CegarLoopResult]: At program point fabsENTRY(lines 74 81) the Hoare annotation is: true [2020-09-21 11:31:14,790 INFO L268 CegarLoopResult]: For program point fabsFINAL(lines 74 81) no Hoare annotation was computed. [2020-09-21 11:31:14,790 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:31:14,790 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:31:14,790 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:31:14,790 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:31:14,790 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-09-21 11:31:14,791 INFO L268 CegarLoopResult]: For program point L97-2(line 97) no Hoare annotation was computed. [2020-09-21 11:31:14,791 INFO L268 CegarLoopResult]: For program point L91-2(lines 91 102) no Hoare annotation was computed. [2020-09-21 11:31:14,791 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 83 107) no Hoare annotation was computed. [2020-09-21 11:31:14,791 INFO L264 CegarLoopResult]: At program point L91-3(lines 91 102) the Hoare annotation is: (and (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-21 11:31:14,791 INFO L271 CegarLoopResult]: At program point L91-4(lines 91 102) the Hoare annotation is: true [2020-09-21 11:31:14,791 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 83 107) no Hoare annotation was computed. [2020-09-21 11:31:14,792 INFO L268 CegarLoopResult]: For program point L104(line 104) no Hoare annotation was computed. [2020-09-21 11:31:14,792 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-09-21 11:31:14,792 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 83 107) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-21 11:31:14,792 INFO L268 CegarLoopResult]: For program point L94-2(lines 94 99) no Hoare annotation was computed. [2020-09-21 11:31:14,792 INFO L264 CegarLoopResult]: At program point L94-3(lines 94 99) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-21 11:31:14,792 INFO L264 CegarLoopResult]: At program point L94-4(lines 94 99) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-21 11:31:14,793 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-21 11:31:14,793 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-21 11:31:14,793 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-21 11:31:14,793 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-21 11:31:14,793 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-21 11:31:14,794 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-21 11:31:14,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:31:14 BoogieIcfgContainer [2020-09-21 11:31:14,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:31:14,819 INFO L168 Benchmark]: Toolchain (without parser) took 10182.79 ms. Allocated memory was 140.5 MB in the beginning and 340.8 MB in the end (delta: 200.3 MB). Free memory was 102.3 MB in the beginning and 112.5 MB in the end (delta: -10.2 MB). Peak memory consumption was 190.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:14,819 INFO L168 Benchmark]: CDTParser took 0.92 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-21 11:31:14,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.47 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 181.0 MB in the end (delta: -79.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:14,821 INFO L168 Benchmark]: Boogie Preprocessor took 65.01 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 179.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:14,822 INFO L168 Benchmark]: RCFGBuilder took 561.25 ms. Allocated memory is still 204.5 MB. Free memory was 179.1 MB in the beginning and 151.5 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:14,823 INFO L168 Benchmark]: TraceAbstraction took 9013.77 ms. Allocated memory was 204.5 MB in the beginning and 340.8 MB in the end (delta: 136.3 MB). Free memory was 150.6 MB in the beginning and 112.5 MB in the end (delta: 38.1 MB). Peak memory consumption was 174.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:14,826 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 532.47 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 181.0 MB in the end (delta: -79.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.01 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 179.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 561.25 ms. Allocated memory is still 204.5 MB. Free memory was 179.1 MB in the beginning and 151.5 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9013.77 ms. Allocated memory was 204.5 MB in the beginning and 340.8 MB in the end (delta: 136.3 MB). Free memory was 150.6 MB in the beginning and 112.5 MB in the end (delta: 38.1 MB). Peak memory consumption was 174.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 94]: Loop Invariant Derived loop invariant: (i <= 5 && n <= 5) && 5 <= n - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 144]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 123]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: n <= 5 && 5 <= n - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.3s, OverallIterations: 16, TraceHistogramMax: 36, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 301 SDtfs, 459 SDslu, 570 SDs, 0 SdLazy, 1409 SolverSat, 143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 255 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=15, 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, 16 MinimizatonAttempts, 144 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 65 PreInvPairs, 141 NumberOfFragments, 96 HoareAnnotationTreeSize, 65 FomulaSimplifications, 2934 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 21 FomulaSimplificationsInter, 317 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1160 NumberOfCodeBlocks, 1160 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1144 ConstructedInterpolants, 0 QuantifiedInterpolants, 436612 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 4614/9037 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...