/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:11:01,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:11:01,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:11:01,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:11:01,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:11:01,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:11:01,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:11:01,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:11:01,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:11:01,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:11:01,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:11:01,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:11:01,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:11:01,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:11:01,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:11:01,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:11:01,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:11:01,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:11:01,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:11:01,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:11:01,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:11:01,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:11:01,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:11:01,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:11:01,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:11:01,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:11:01,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:11:01,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:11:01,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:11:01,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:11:01,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:11:01,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:11:01,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:11:01,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:11:01,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:11:01,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:11:01,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:11:01,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:11:01,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:11:01,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:11:01,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:11:01,332 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:11:01,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:11:01,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:11:01,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:11:01,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:11:01,376 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:11:01,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:11:01,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:11:01,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:11:01,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:11:01,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:11:01,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:11:01,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:11:01,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:11:01,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:11:01,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:11:01,379 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:11:01,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:11:01,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:11:01,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:11:01,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:11:01,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:11:01,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:11:01,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:11:01,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:11:01,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:11:01,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:11:01,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:11:01,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:11:01,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:11:01,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:11:01,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:11:01,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:11:01,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:11:01,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:11:01,933 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:11:01,934 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-24 16:11:02,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f18dfff63/49de794598604cec82e5ebffa6694bd9/FLAG5c8575f22 [2020-09-24 16:11:02,587 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:11:02,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-24 16:11:02,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f18dfff63/49de794598604cec82e5ebffa6694bd9/FLAG5c8575f22 [2020-09-24 16:11:02,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f18dfff63/49de794598604cec82e5ebffa6694bd9 [2020-09-24 16:11:02,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:11:02,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:11:02,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:11:02,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:11:02,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:11:02,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:11:02" (1/1) ... [2020-09-24 16:11:02,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5035f6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:02, skipping insertion in model container [2020-09-24 16:11:02,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:11:02" (1/1) ... [2020-09-24 16:11:02,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:11:02,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:11:03,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:11:03,196 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:11:03,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:11:03,236 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:11:03,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:03 WrapperNode [2020-09-24 16:11:03,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:11:03,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:11:03,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:11:03,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:11:03,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:03" (1/1) ... [2020-09-24 16:11:03,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:03" (1/1) ... [2020-09-24 16:11:03,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:03" (1/1) ... [2020-09-24 16:11:03,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:03" (1/1) ... [2020-09-24 16:11:03,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:03" (1/1) ... [2020-09-24 16:11:03,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:03" (1/1) ... [2020-09-24 16:11:03,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:03" (1/1) ... [2020-09-24 16:11:03,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:11:03,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:11:03,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:11:03,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:11:03,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:11:03,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:11:03,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:11:03,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 16:11:03,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:11:03,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:11:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:11:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:11:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 16:11:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:11:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:11:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:11:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:11:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:11:03,778 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:11:03,778 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 16:11:03,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:11:03 BoogieIcfgContainer [2020-09-24 16:11:03,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:11:03,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:11:03,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:11:03,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:11:03,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:11:02" (1/3) ... [2020-09-24 16:11:03,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d3d5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:11:03, skipping insertion in model container [2020-09-24 16:11:03,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:03" (2/3) ... [2020-09-24 16:11:03,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d3d5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:11:03, skipping insertion in model container [2020-09-24 16:11:03,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:11:03" (3/3) ... [2020-09-24 16:11:03,795 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2020-09-24 16:11:03,806 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:11:03,815 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:11:03,834 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:11:03,863 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:11:03,863 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:11:03,863 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:11:03,864 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:11:03,864 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:11:03,864 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:11:03,864 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:11:03,864 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:11:03,888 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-24 16:11:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 16:11:03,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:03,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:03,896 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:03,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:03,903 INFO L82 PathProgramCache]: Analyzing trace with hash -537390573, now seen corresponding path program 1 times [2020-09-24 16:11:03,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:03,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408962225] [2020-09-24 16:11:03,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:04,035 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:04,035 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:04,035 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:04,035 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:04,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 16:11:04,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:04,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:11:04,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:04,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:11:04,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:04,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:04,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:04,072 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:04,072 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:04,072 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:04,073 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:04,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:04,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:04,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:04,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:04,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:04,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408962225] [2020-09-24 16:11:04,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:04,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 16:11:04,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806625748] [2020-09-24 16:11:04,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 16:11:04,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:04,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 16:11:04,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 16:11:04,116 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-09-24 16:11:04,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:04,164 INFO L93 Difference]: Finished difference Result 134 states and 203 transitions. [2020-09-24 16:11:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 16:11:04,166 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-09-24 16:11:04,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:04,181 INFO L225 Difference]: With dead ends: 134 [2020-09-24 16:11:04,182 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 16:11:04,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 16:11:04,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 16:11:04,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-24 16:11:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 16:11:04,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2020-09-24 16:11:04,257 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 19 [2020-09-24 16:11:04,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:04,258 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2020-09-24 16:11:04,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 16:11:04,258 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2020-09-24 16:11:04,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 16:11:04,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:04,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:04,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:11:04,261 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:04,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:04,261 INFO L82 PathProgramCache]: Analyzing trace with hash 471335344, now seen corresponding path program 1 times [2020-09-24 16:11:04,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:04,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524443668] [2020-09-24 16:11:04,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:04,307 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:04,308 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:04,308 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:04,308 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:04,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 16:11:04,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:04,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 16:11:04,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:11:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:11:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 16:11:04,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:04,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:04,399 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:04,400 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:04,400 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:04,400 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:04,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:04,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:04,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:04,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:04,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524443668] [2020-09-24 16:11:04,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:04,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:11:04,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675079889] [2020-09-24 16:11:04,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:11:04,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:04,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:11:04,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:11:04,413 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand 5 states. [2020-09-24 16:11:04,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:04,598 INFO L93 Difference]: Finished difference Result 91 states and 115 transitions. [2020-09-24 16:11:04,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:11:04,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-24 16:11:04,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:04,601 INFO L225 Difference]: With dead ends: 91 [2020-09-24 16:11:04,601 INFO L226 Difference]: Without dead ends: 89 [2020-09-24 16:11:04,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:11:04,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-24 16:11:04,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-09-24 16:11:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-24 16:11:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2020-09-24 16:11:04,623 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 20 [2020-09-24 16:11:04,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:04,624 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2020-09-24 16:11:04,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:11:04,624 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2020-09-24 16:11:04,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 16:11:04,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:04,625 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:04,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:11:04,626 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:04,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:04,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1383579147, now seen corresponding path program 1 times [2020-09-24 16:11:04,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:04,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457180160] [2020-09-24 16:11:04,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:04,653 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:04,653 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:04,654 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:04,654 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:04,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 16:11:04,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:04,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 16:11:04,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:04,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:11:04,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 16:11:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 16:11:04,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:04,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:04,719 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:04,719 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:04,719 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:04,720 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:04,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:04,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:04,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:04,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:04,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:04,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 16:11:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:04,731 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:04,731 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:04,732 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:04,732 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:04,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:04,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:04,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:11:04,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:04,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:04,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:04,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:04,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:04,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457180160] [2020-09-24 16:11:04,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:04,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:11:04,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530307168] [2020-09-24 16:11:04,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:11:04,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:04,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:11:04,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:11:04,745 INFO L87 Difference]: Start difference. First operand 82 states and 104 transitions. Second operand 5 states. [2020-09-24 16:11:04,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:04,846 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2020-09-24 16:11:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:11:04,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-24 16:11:04,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:04,850 INFO L225 Difference]: With dead ends: 88 [2020-09-24 16:11:04,851 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 16:11:04,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:11:04,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 16:11:04,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-24 16:11:04,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 16:11:04,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2020-09-24 16:11:04,878 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 25 [2020-09-24 16:11:04,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:04,879 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2020-09-24 16:11:04,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:11:04,879 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2020-09-24 16:11:04,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 16:11:04,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:04,880 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:04,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:11:04,884 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:04,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:04,884 INFO L82 PathProgramCache]: Analyzing trace with hash 344115466, now seen corresponding path program 1 times [2020-09-24 16:11:04,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:04,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280721442] [2020-09-24 16:11:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:04,920 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:04,921 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:04,921 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:04,921 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:04,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 16:11:04,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:04,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 16:11:04,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:11:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:11:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 16:11:04,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:05,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:05,011 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:05,012 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:05,012 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:05,012 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:05,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:05,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:05,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:05,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:05,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:05,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:05,039 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:05,039 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:05,040 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:05,040 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:05,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:05,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:05,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:11:05,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:05,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:05,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:05,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:05,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:05,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280721442] [2020-09-24 16:11:05,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:05,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 16:11:05,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805546853] [2020-09-24 16:11:05,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:11:05,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:05,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:11:05,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:11:05,056 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand 7 states. [2020-09-24 16:11:05,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:05,231 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2020-09-24 16:11:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 16:11:05,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-24 16:11:05,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:05,234 INFO L225 Difference]: With dead ends: 90 [2020-09-24 16:11:05,234 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 16:11:05,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:11:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 16:11:05,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-24 16:11:05,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 16:11:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2020-09-24 16:11:05,245 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 28 [2020-09-24 16:11:05,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:05,246 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2020-09-24 16:11:05,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:11:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2020-09-24 16:11:05,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 16:11:05,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:05,248 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:05,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:11:05,248 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:05,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:05,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1469174755, now seen corresponding path program 1 times [2020-09-24 16:11:05,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:05,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74159142] [2020-09-24 16:11:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:05,279 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:05,280 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:05,280 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:05,280 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:05,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 16:11:05,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:05,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 16:11:05,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:11:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:11:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 16:11:05,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:05,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:05,347 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:05,349 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:05,349 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:05,350 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:05,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:05,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:05,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:05,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:05,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:05,361 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:05,362 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:05,362 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:05,362 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:05,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:05,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:05,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:11:05,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:05,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:05,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:05,379 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:05,380 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:05,380 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:05,380 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:05,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:05,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:05,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:11:05,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:05,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 16:11:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 16:11:05,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74159142] [2020-09-24 16:11:05,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:05,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 16:11:05,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332918950] [2020-09-24 16:11:05,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:11:05,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:05,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:11:05,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:11:05,401 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 7 states. [2020-09-24 16:11:05,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:05,586 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2020-09-24 16:11:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 16:11:05,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-24 16:11:05,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:05,588 INFO L225 Difference]: With dead ends: 94 [2020-09-24 16:11:05,588 INFO L226 Difference]: Without dead ends: 85 [2020-09-24 16:11:05,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:11:05,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-24 16:11:05,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2020-09-24 16:11:05,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 16:11:05,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2020-09-24 16:11:05,601 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 38 [2020-09-24 16:11:05,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:05,601 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2020-09-24 16:11:05,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:11:05,602 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2020-09-24 16:11:05,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 16:11:05,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:05,603 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:05,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:11:05,604 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:05,604 INFO L82 PathProgramCache]: Analyzing trace with hash 859677550, now seen corresponding path program 1 times [2020-09-24 16:11:05,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:05,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745505658] [2020-09-24 16:11:05,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:05,632 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:05,633 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:05,633 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:05,633 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:05,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 16:11:05,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:05,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:11:05,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:05,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:11:05,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:11:05,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 16:11:05,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:05,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:05,702 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:05,702 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:05,703 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:05,703 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:05,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:05,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:05,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:05,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:05,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:05,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:05,710 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:05,710 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:05,710 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:05,711 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:05,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:05,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:05,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:05,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:05,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:05,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:05,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:05,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:05,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:05,720 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:05,720 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:05,720 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:05,720 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:05,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:05,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:05,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:05,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:05,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:05,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:05,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 16:11:05,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745505658] [2020-09-24 16:11:05,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:05,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 16:11:05,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97260411] [2020-09-24 16:11:05,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:11:05,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:05,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:11:05,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:11:05,731 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand 7 states. [2020-09-24 16:11:05,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:05,874 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2020-09-24 16:11:05,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 16:11:05,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-09-24 16:11:05,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:05,876 INFO L225 Difference]: With dead ends: 91 [2020-09-24 16:11:05,877 INFO L226 Difference]: Without dead ends: 89 [2020-09-24 16:11:05,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:11:05,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-24 16:11:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2020-09-24 16:11:05,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 16:11:05,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2020-09-24 16:11:05,892 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 41 [2020-09-24 16:11:05,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:05,894 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2020-09-24 16:11:05,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:11:05,894 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2020-09-24 16:11:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 16:11:05,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:05,898 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:05,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:11:05,899 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:05,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:05,900 INFO L82 PathProgramCache]: Analyzing trace with hash -943144682, now seen corresponding path program 1 times [2020-09-24 16:11:05,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:05,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555106983] [2020-09-24 16:11:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:05,960 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:05,960 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:05,960 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:05,961 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:05,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 16:11:05,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:05,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 16:11:05,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:11:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:11:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 16:11:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:06,030 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:06,030 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:06,030 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:06,031 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:06,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:06,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:06,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:06,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:06,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:06,037 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:06,038 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:06,038 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:06,038 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:06,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:06,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:06,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:06,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:06,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-09-24 16:11:06,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:06,062 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:06,063 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:06,063 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:06,063 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:06,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:06,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:06,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:06,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:06,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:06,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 16:11:06,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555106983] [2020-09-24 16:11:06,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:06,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 16:11:06,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345607646] [2020-09-24 16:11:06,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:11:06,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:06,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:11:06,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:11:06,074 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand 7 states. [2020-09-24 16:11:06,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:06,219 INFO L93 Difference]: Finished difference Result 120 states and 141 transitions. [2020-09-24 16:11:06,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 16:11:06,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-09-24 16:11:06,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:06,221 INFO L225 Difference]: With dead ends: 120 [2020-09-24 16:11:06,221 INFO L226 Difference]: Without dead ends: 118 [2020-09-24 16:11:06,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:11:06,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-24 16:11:06,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 109. [2020-09-24 16:11:06,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-24 16:11:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2020-09-24 16:11:06,234 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 44 [2020-09-24 16:11:06,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:06,234 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2020-09-24 16:11:06,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:11:06,235 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2020-09-24 16:11:06,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 16:11:06,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:06,237 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:06,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:11:06,237 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:06,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:06,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1177695863, now seen corresponding path program 2 times [2020-09-24 16:11:06,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:06,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933639426] [2020-09-24 16:11:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:06,294 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:06,294 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:06,294 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:06,295 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:06,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 16:11:06,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:06,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 16:11:06,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 16:11:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:11:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 16:11:06,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:06,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:06,396 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:06,396 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:06,396 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:06,396 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:06,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:06,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:06,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:06,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:06,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:06,403 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:06,403 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:06,403 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:06,404 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:06,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:06,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:06,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:06,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:06,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:06,411 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:06,411 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:06,411 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:06,412 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:06,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:06,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:06,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:06,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:06,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:06,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 16:11:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:06,419 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:06,419 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:06,419 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:06,420 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:06,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:06,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:06,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:06,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:06,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:06,426 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 16:11:06,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933639426] [2020-09-24 16:11:06,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:06,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 16:11:06,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035319290] [2020-09-24 16:11:06,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:11:06,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:06,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:11:06,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:11:06,429 INFO L87 Difference]: Start difference. First operand 109 states and 128 transitions. Second operand 8 states. [2020-09-24 16:11:06,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:06,563 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2020-09-24 16:11:06,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:11:06,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-09-24 16:11:06,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:06,565 INFO L225 Difference]: With dead ends: 115 [2020-09-24 16:11:06,565 INFO L226 Difference]: Without dead ends: 113 [2020-09-24 16:11:06,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:11:06,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-24 16:11:06,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-09-24 16:11:06,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-24 16:11:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2020-09-24 16:11:06,577 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 46 [2020-09-24 16:11:06,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:06,577 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2020-09-24 16:11:06,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:11:06,578 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2020-09-24 16:11:06,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 16:11:06,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:06,579 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:06,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:11:06,580 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:06,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:06,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1826770767, now seen corresponding path program 1 times [2020-09-24 16:11:06,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:06,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853006389] [2020-09-24 16:11:06,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:06,613 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:06,613 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:06,614 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:06,614 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:06,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 16:11:06,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:06,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 16:11:06,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 16:11:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:11:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 16:11:06,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:06,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:06,712 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:06,712 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:06,713 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:06,713 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:06,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:06,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:06,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:06,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:06,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:06,720 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:06,720 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:06,720 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:06,720 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:06,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:06,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:06,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:06,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:06,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:06,728 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:06,729 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:06,729 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:06,729 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:06,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:06,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:06,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:06,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:06,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:06,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:06,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:06,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:06,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:11:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:06,742 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:06,742 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:06,743 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:06,743 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:06,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:06,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:06,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:11:06,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:06,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 16:11:06,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853006389] [2020-09-24 16:11:06,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:06,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:11:06,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217970273] [2020-09-24 16:11:06,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:11:06,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:06,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:11:06,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:11:06,760 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand 8 states. [2020-09-24 16:11:07,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:07,014 INFO L93 Difference]: Finished difference Result 128 states and 147 transitions. [2020-09-24 16:11:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:11:07,014 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-09-24 16:11:07,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:07,016 INFO L225 Difference]: With dead ends: 128 [2020-09-24 16:11:07,017 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 16:11:07,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:11:07,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 16:11:07,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2020-09-24 16:11:07,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-24 16:11:07,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-09-24 16:11:07,030 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 49 [2020-09-24 16:11:07,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:07,031 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-09-24 16:11:07,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:11:07,031 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-09-24 16:11:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 16:11:07,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:07,033 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:07,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:11:07,033 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:07,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1519048418, now seen corresponding path program 1 times [2020-09-24 16:11:07,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:07,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302973131] [2020-09-24 16:11:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:07,106 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:07,107 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:07,107 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:07,107 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:07,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 16:11:07,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:07,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 16:11:07,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:11:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:11:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 16:11:07,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:07,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:07,220 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:07,220 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:07,220 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:07,220 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:07,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:07,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:07,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:07,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:07,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:07,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:07,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:07,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:07,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:07,227 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:07,227 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:07,227 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:07,228 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:07,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:07,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:07,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:07,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:07,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:07,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:07,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:07,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:07,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:07,236 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:07,237 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:07,237 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:07,237 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:07,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:07,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:07,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:07,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:07,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:07,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:07,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:07,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:11:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:07,244 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:07,244 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:07,244 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:07,245 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:07,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:07,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:07,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:07,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:07,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 16:11:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:07,251 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:07,252 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:07,252 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:07,252 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:07,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:07,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:07,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:07,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:07,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:07,260 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 16:11:07,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302973131] [2020-09-24 16:11:07,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:07,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:11:07,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621752629] [2020-09-24 16:11:07,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:11:07,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:07,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:11:07,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:11:07,263 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 9 states. [2020-09-24 16:11:07,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:07,474 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-09-24 16:11:07,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 16:11:07,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-09-24 16:11:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:07,476 INFO L225 Difference]: With dead ends: 135 [2020-09-24 16:11:07,477 INFO L226 Difference]: Without dead ends: 133 [2020-09-24 16:11:07,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:11:07,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-24 16:11:07,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 126. [2020-09-24 16:11:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-24 16:11:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2020-09-24 16:11:07,495 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 58 [2020-09-24 16:11:07,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:07,497 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2020-09-24 16:11:07,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:11:07,498 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2020-09-24 16:11:07,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 16:11:07,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:07,500 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:07,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:11:07,501 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:07,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:07,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1733407875, now seen corresponding path program 1 times [2020-09-24 16:11:07,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:07,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577955962] [2020-09-24 16:11:07,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:07,541 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:07,541 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:07,542 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:07,542 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:07,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 16:11:07,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:07,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 16:11:07,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:11:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:11:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 16:11:07,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:07,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:07,691 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:07,691 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:07,691 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:07,691 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:07,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:07,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:07,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:07,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:07,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:07,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:07,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:07,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:07,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:07,697 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:07,697 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:07,698 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:07,698 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:07,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:07,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:07,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:07,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:07,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:07,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:07,706 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:07,706 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:07,706 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:07,706 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:07,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:07,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:07,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:07,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:07,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:07,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:07,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:07,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 16:11:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:07,713 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:07,713 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:07,713 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:07,714 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:07,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:07,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:07,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:07,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:07,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:07,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:07,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:07,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:07,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 16:11:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:07,720 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:07,720 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:07,721 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:07,721 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:07,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:07,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:07,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:07,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:07,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 16:11:07,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577955962] [2020-09-24 16:11:07,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:07,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 16:11:07,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34882274] [2020-09-24 16:11:07,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:11:07,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:07,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:11:07,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:11:07,731 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 9 states. [2020-09-24 16:11:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:08,008 INFO L93 Difference]: Finished difference Result 178 states and 206 transitions. [2020-09-24 16:11:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 16:11:08,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-09-24 16:11:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:08,011 INFO L225 Difference]: With dead ends: 178 [2020-09-24 16:11:08,011 INFO L226 Difference]: Without dead ends: 176 [2020-09-24 16:11:08,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:11:08,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-24 16:11:08,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 166. [2020-09-24 16:11:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-24 16:11:08,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 191 transitions. [2020-09-24 16:11:08,023 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 191 transitions. Word has length 62 [2020-09-24 16:11:08,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:08,024 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 191 transitions. [2020-09-24 16:11:08,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:11:08,024 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 191 transitions. [2020-09-24 16:11:08,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 16:11:08,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:08,025 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:08,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 16:11:08,026 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:08,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:08,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1967257859, now seen corresponding path program 1 times [2020-09-24 16:11:08,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:08,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999669661] [2020-09-24 16:11:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:08,067 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:08,068 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:08,068 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:08,068 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:08,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 16:11:08,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:08,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 16:11:08,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:08,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:11:08,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:11:08,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 16:11:08,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:08,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:08,158 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:08,158 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:08,159 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:08,159 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:08,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:08,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:08,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:08,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:08,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:08,165 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:08,165 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:08,165 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:08,166 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:08,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:08,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:08,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:08,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:08,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:08,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:08,173 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:08,173 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:08,173 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:08,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:08,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:08,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:08,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:08,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:08,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:08,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:11:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:08,180 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:08,180 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:08,181 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:08,181 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:08,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:08,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:08,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:08,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:08,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 16:11:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:08,188 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:08,188 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:08,189 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:08,189 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:08,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:08,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:08,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:08,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:08,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:08,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:08,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 16:11:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:08,196 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:08,196 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:08,196 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:08,197 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:08,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:08,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:08,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:08,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:08,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 16:11:08,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999669661] [2020-09-24 16:11:08,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:08,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:11:08,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835662930] [2020-09-24 16:11:08,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:11:08,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:08,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:11:08,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:11:08,207 INFO L87 Difference]: Start difference. First operand 166 states and 191 transitions. Second operand 9 states. [2020-09-24 16:11:08,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:08,434 INFO L93 Difference]: Finished difference Result 175 states and 200 transitions. [2020-09-24 16:11:08,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 16:11:08,435 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-09-24 16:11:08,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:08,437 INFO L225 Difference]: With dead ends: 175 [2020-09-24 16:11:08,437 INFO L226 Difference]: Without dead ends: 173 [2020-09-24 16:11:08,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:11:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-24 16:11:08,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2020-09-24 16:11:08,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-24 16:11:08,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 196 transitions. [2020-09-24 16:11:08,456 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 196 transitions. Word has length 63 [2020-09-24 16:11:08,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:08,457 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 196 transitions. [2020-09-24 16:11:08,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:11:08,457 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 196 transitions. [2020-09-24 16:11:08,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 16:11:08,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:08,458 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:08,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 16:11:08,459 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:08,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:08,459 INFO L82 PathProgramCache]: Analyzing trace with hash -822659134, now seen corresponding path program 1 times [2020-09-24 16:11:08,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:08,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438761442] [2020-09-24 16:11:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:08,483 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:08,483 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:08,483 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:08,483 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:08,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 16:11:08,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:08,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:11:08,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:08,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:11:08,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:11:08,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 16:11:08,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:08,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:08,589 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:08,589 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:08,590 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:08,590 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:08,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:08,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:08,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:08,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:08,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:08,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:08,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:08,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:08,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:08,595 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:08,595 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:08,595 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:08,596 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:08,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:08,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:08,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:08,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:08,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:08,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:08,602 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:08,603 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:08,603 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:08,603 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:08,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:08,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:08,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:08,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:08,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:08,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:08,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:08,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:08,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:11:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:08,609 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:08,609 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:08,610 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:08,610 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:08,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:08,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:08,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:08,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:08,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:08,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 16:11:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:08,616 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:08,617 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:08,617 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:08,617 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:08,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:08,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:08,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:08,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:08,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:08,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:08,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:08,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 16:11:08,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438761442] [2020-09-24 16:11:08,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:08,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 16:11:08,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394838777] [2020-09-24 16:11:08,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:11:08,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:08,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:11:08,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:11:08,627 INFO L87 Difference]: Start difference. First operand 171 states and 196 transitions. Second operand 9 states. [2020-09-24 16:11:08,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:08,869 INFO L93 Difference]: Finished difference Result 204 states and 236 transitions. [2020-09-24 16:11:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 16:11:08,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-09-24 16:11:08,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:08,872 INFO L225 Difference]: With dead ends: 204 [2020-09-24 16:11:08,872 INFO L226 Difference]: Without dead ends: 202 [2020-09-24 16:11:08,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:11:08,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-24 16:11:08,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 174. [2020-09-24 16:11:08,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-24 16:11:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 199 transitions. [2020-09-24 16:11:08,889 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 199 transitions. Word has length 65 [2020-09-24 16:11:08,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:08,890 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 199 transitions. [2020-09-24 16:11:08,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:11:08,890 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 199 transitions. [2020-09-24 16:11:08,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 16:11:08,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:08,891 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:08,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 16:11:08,892 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:08,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:08,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1510377470, now seen corresponding path program 1 times [2020-09-24 16:11:08,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:08,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022681367] [2020-09-24 16:11:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:08,936 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:08,936 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:08,937 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:08,937 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:08,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 16:11:08,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:08,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 16:11:08,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:08,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:11:08,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:11:08,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 16:11:08,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:09,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,055 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,056 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,056 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,056 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:09,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:09,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:09,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:09,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,062 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,062 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,062 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,063 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:09,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:09,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:09,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:09,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:09,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,070 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,071 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,071 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,071 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:09,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:09,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:09,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:09,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:09,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 16:11:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,079 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,079 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,079 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,080 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:09,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:09,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:09,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:09,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 16:11:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,087 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,087 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,087 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,088 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:09,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:09,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:09,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:09,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:09,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 16:11:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,095 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,095 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,095 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,095 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:09,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:09,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:09,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-24 16:11:09,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022681367] [2020-09-24 16:11:09,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:09,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:11:09,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43255011] [2020-09-24 16:11:09,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:11:09,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:09,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:11:09,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:11:09,106 INFO L87 Difference]: Start difference. First operand 174 states and 199 transitions. Second operand 9 states. [2020-09-24 16:11:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:09,306 INFO L93 Difference]: Finished difference Result 221 states and 259 transitions. [2020-09-24 16:11:09,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 16:11:09,307 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-24 16:11:09,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:09,308 INFO L225 Difference]: With dead ends: 221 [2020-09-24 16:11:09,309 INFO L226 Difference]: Without dead ends: 216 [2020-09-24 16:11:09,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:11:09,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-24 16:11:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 212. [2020-09-24 16:11:09,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-24 16:11:09,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 247 transitions. [2020-09-24 16:11:09,329 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 247 transitions. Word has length 67 [2020-09-24 16:11:09,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:09,330 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 247 transitions. [2020-09-24 16:11:09,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:11:09,330 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 247 transitions. [2020-09-24 16:11:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 16:11:09,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:09,339 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:09,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 16:11:09,339 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:09,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:09,340 INFO L82 PathProgramCache]: Analyzing trace with hash 869213219, now seen corresponding path program 2 times [2020-09-24 16:11:09,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:09,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888400330] [2020-09-24 16:11:09,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,395 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,396 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,396 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,396 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 16:11:09,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 16:11:09,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:11:09,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:11:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 16:11:09,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:09,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,502 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,503 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,503 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,503 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:09,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:09,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:09,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:09,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,509 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,510 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,510 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,510 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:09,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:09,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:09,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:09,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:09,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,516 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,516 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,517 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,517 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:09,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:09,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:09,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:09,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:09,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:11:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,524 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,524 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,525 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,525 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:09,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:09,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:09,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:09,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 16:11:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,536 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,536 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,536 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,536 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:09,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:11:09,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:09,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:09,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:09,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 16:11:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,543 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,543 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,543 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,544 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:09,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:09,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:09,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:09,553 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-24 16:11:09,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888400330] [2020-09-24 16:11:09,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:09,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 16:11:09,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093146247] [2020-09-24 16:11:09,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:11:09,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:09,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:11:09,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:11:09,556 INFO L87 Difference]: Start difference. First operand 212 states and 247 transitions. Second operand 9 states. [2020-09-24 16:11:09,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:09,798 INFO L93 Difference]: Finished difference Result 243 states and 285 transitions. [2020-09-24 16:11:09,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 16:11:09,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-24 16:11:09,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:09,802 INFO L225 Difference]: With dead ends: 243 [2020-09-24 16:11:09,802 INFO L226 Difference]: Without dead ends: 238 [2020-09-24 16:11:09,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:11:09,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-24 16:11:09,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2020-09-24 16:11:09,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-24 16:11:09,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 273 transitions. [2020-09-24 16:11:09,827 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 273 transitions. Word has length 70 [2020-09-24 16:11:09,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:09,828 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 273 transitions. [2020-09-24 16:11:09,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:11:09,828 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 273 transitions. [2020-09-24 16:11:09,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 16:11:09,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:09,830 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:09,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 16:11:09,830 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:09,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:09,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1269119089, now seen corresponding path program 1 times [2020-09-24 16:11:09,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:09,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110141312] [2020-09-24 16:11:09,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,867 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,867 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,868 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,868 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 16:11:09,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 16:11:09,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:11:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:11:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 16:11:09,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:09,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,973 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,973 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,974 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,975 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:09,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:09,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:09,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:09,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,981 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,982 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,982 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,982 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:09,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:09,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:09,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:09,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:09,990 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:09,990 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:09,991 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:09,991 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:09,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:09,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:09,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:09,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:09,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:09,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 16:11:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:10,001 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:10,002 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:10,002 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:10,002 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:10,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:10,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:10,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:11:10,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:10,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:10,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:10,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 16:11:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:10,009 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:10,010 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:10,010 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:10,010 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:10,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:10,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:10,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:10,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:10,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:10,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 16:11:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:10,020 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:10,021 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:10,021 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:10,021 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:10,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:10,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:10,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:10,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:10,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:10,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:10,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:10,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:10,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 16:11:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:10,029 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:10,030 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:10,030 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:10,030 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:10,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:10,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:10,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:10,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:10,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:10,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:10,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:10,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-24 16:11:10,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110141312] [2020-09-24 16:11:10,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:10,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 16:11:10,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158777865] [2020-09-24 16:11:10,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 16:11:10,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:10,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 16:11:10,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:11:10,060 INFO L87 Difference]: Start difference. First operand 234 states and 273 transitions. Second operand 11 states. [2020-09-24 16:11:10,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:10,323 INFO L93 Difference]: Finished difference Result 256 states and 295 transitions. [2020-09-24 16:11:10,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 16:11:10,323 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-09-24 16:11:10,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:10,325 INFO L225 Difference]: With dead ends: 256 [2020-09-24 16:11:10,325 INFO L226 Difference]: Without dead ends: 252 [2020-09-24 16:11:10,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-24 16:11:10,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-24 16:11:10,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 247. [2020-09-24 16:11:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-09-24 16:11:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 284 transitions. [2020-09-24 16:11:10,341 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 284 transitions. Word has length 76 [2020-09-24 16:11:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:10,342 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 284 transitions. [2020-09-24 16:11:10,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 16:11:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 284 transitions. [2020-09-24 16:11:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 16:11:10,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:10,343 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:10,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 16:11:10,344 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:10,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:10,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1147260786, now seen corresponding path program 1 times [2020-09-24 16:11:10,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:10,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810371842] [2020-09-24 16:11:10,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:10,376 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:10,376 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:10,376 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:10,376 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:10,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 16:11:10,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:10,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 16:11:10,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:10,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:11:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:11:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 16:11:10,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:10,478 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:10,478 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:10,478 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:10,478 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:10,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:10,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:10,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:10,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:10,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:10,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:10,483 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:10,483 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:10,483 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:10,484 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:10,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:10,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:10,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:10,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:10,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:10,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:10,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:10,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:10,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:10,489 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:10,489 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:10,490 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:10,490 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:10,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:10,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:10,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:10,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:10,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:10,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:10,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:10,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:10,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:11:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:10,496 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:10,496 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:10,496 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:10,497 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:10,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:10,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:10,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:10,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:10,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:10,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:10,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:10,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:10,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 16:11:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:10,502 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:10,503 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:10,503 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:10,503 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:10,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:10,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:10,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:10,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:10,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 16:11:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:10,514 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:10,514 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:10,514 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:10,515 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:10,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:10,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:10,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:11:10,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:10,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:10,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:10,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:10,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:10,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 16:11:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:10,521 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:10,521 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:10,521 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:10,522 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:10,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:10,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:10,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:10,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:10,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-24 16:11:10,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810371842] [2020-09-24 16:11:10,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:10,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 16:11:10,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274281967] [2020-09-24 16:11:10,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 16:11:10,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:10,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 16:11:10,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:11:10,535 INFO L87 Difference]: Start difference. First operand 247 states and 284 transitions. Second operand 11 states. [2020-09-24 16:11:10,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:10,820 INFO L93 Difference]: Finished difference Result 284 states and 330 transitions. [2020-09-24 16:11:10,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 16:11:10,821 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-24 16:11:10,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:10,823 INFO L225 Difference]: With dead ends: 284 [2020-09-24 16:11:10,823 INFO L226 Difference]: Without dead ends: 280 [2020-09-24 16:11:10,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-09-24 16:11:10,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-09-24 16:11:10,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 275. [2020-09-24 16:11:10,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-24 16:11:10,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 318 transitions. [2020-09-24 16:11:10,844 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 318 transitions. Word has length 79 [2020-09-24 16:11:10,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:10,845 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 318 transitions. [2020-09-24 16:11:10,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 16:11:10,845 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 318 transitions. [2020-09-24 16:11:10,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 16:11:10,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:10,846 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:10,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 16:11:10,847 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:10,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:10,847 INFO L82 PathProgramCache]: Analyzing trace with hash 341113206, now seen corresponding path program 2 times [2020-09-24 16:11:10,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:10,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652057421] [2020-09-24 16:11:10,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:10,910 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:10,910 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:10,910 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:10,910 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:10,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 16:11:10,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:10,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 16:11:10,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:11:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:11:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 16:11:10,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:10,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,001 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,001 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,001 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,001 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:11,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:11,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:11,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,006 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,006 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,006 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,006 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:11,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:11,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:11,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:11,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,016 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,016 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,016 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,016 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:11,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:11,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:11,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:11,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:11:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,028 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,028 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,028 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,028 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:11,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:11:11,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 16:11:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,034 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,035 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,035 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,035 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:11,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:11,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:11,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:11,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 16:11:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,041 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,041 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,042 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,042 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:11,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:11,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:11,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 16:11:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,052 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,052 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,053 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,053 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:11,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:11,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:11,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:11,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-24 16:11:11,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652057421] [2020-09-24 16:11:11,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:11,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 16:11:11,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376639011] [2020-09-24 16:11:11,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 16:11:11,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:11,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 16:11:11,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:11:11,067 INFO L87 Difference]: Start difference. First operand 275 states and 318 transitions. Second operand 11 states. [2020-09-24 16:11:11,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:11,367 INFO L93 Difference]: Finished difference Result 312 states and 364 transitions. [2020-09-24 16:11:11,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 16:11:11,367 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-24 16:11:11,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:11,370 INFO L225 Difference]: With dead ends: 312 [2020-09-24 16:11:11,370 INFO L226 Difference]: Without dead ends: 310 [2020-09-24 16:11:11,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-09-24 16:11:11,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-09-24 16:11:11,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 305. [2020-09-24 16:11:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-09-24 16:11:11,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 355 transitions. [2020-09-24 16:11:11,390 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 355 transitions. Word has length 79 [2020-09-24 16:11:11,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:11,390 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 355 transitions. [2020-09-24 16:11:11,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 16:11:11,390 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 355 transitions. [2020-09-24 16:11:11,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 16:11:11,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:11,393 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:11,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 16:11:11,394 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:11,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:11,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1759613834, now seen corresponding path program 1 times [2020-09-24 16:11:11,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:11,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773154846] [2020-09-24 16:11:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,462 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,462 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,462 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,463 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 16:11:11,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 16:11:11,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 16:11:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:11:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 16:11:11,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,747 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,748 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,748 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,748 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:11,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:11,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:11,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:11,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,755 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,755 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,755 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,755 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:11,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:11,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:11,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:11,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,762 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,763 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,763 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,763 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:11,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:11,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:11,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 16:11:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,773 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,774 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,774 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,774 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:11,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:11:11,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:11,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:11,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 16:11:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,787 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,788 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,788 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,788 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:11,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:11,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:11,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:11,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 16:11:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,796 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,796 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,796 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,797 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:11,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:11,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:11,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:11,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 16:11:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,805 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,806 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,806 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,806 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:11,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:11,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:11,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 16:11:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:11,816 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:11,816 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:11,816 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:11,816 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:11,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:11,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:11,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:11,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:11,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-24 16:11:11,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773154846] [2020-09-24 16:11:11,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:11,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 16:11:11,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902601435] [2020-09-24 16:11:11,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 16:11:11,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:11,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 16:11:11,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:11:11,844 INFO L87 Difference]: Start difference. First operand 305 states and 355 transitions. Second operand 13 states. [2020-09-24 16:11:12,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:12,357 INFO L93 Difference]: Finished difference Result 334 states and 386 transitions. [2020-09-24 16:11:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 16:11:12,358 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-09-24 16:11:12,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:12,360 INFO L225 Difference]: With dead ends: 334 [2020-09-24 16:11:12,360 INFO L226 Difference]: Without dead ends: 332 [2020-09-24 16:11:12,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2020-09-24 16:11:12,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-09-24 16:11:12,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 326. [2020-09-24 16:11:12,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-09-24 16:11:12,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 378 transitions. [2020-09-24 16:11:12,396 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 378 transitions. Word has length 81 [2020-09-24 16:11:12,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:12,396 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 378 transitions. [2020-09-24 16:11:12,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 16:11:12,396 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 378 transitions. [2020-09-24 16:11:12,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 16:11:12,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:12,399 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:12,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 16:11:12,401 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:12,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:12,401 INFO L82 PathProgramCache]: Analyzing trace with hash -343631243, now seen corresponding path program 1 times [2020-09-24 16:11:12,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:12,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934527507] [2020-09-24 16:11:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:12,439 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:12,439 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:12,439 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:12,439 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:12,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 16:11:12,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:12,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 16:11:12,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:11:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:11:12,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 16:11:12,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:12,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:12,526 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:12,527 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:12,527 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:12,527 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:12,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:12,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:12,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:12,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:12,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:12,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:12,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:12,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:12,534 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:12,534 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:12,534 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:12,534 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:12,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:12,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:12,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:12,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:12,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:12,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:12,542 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:12,542 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:12,542 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:12,543 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:12,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:12,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:12,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:12,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:12,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:12,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:12,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:12,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 16:11:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:12,549 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:12,549 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:12,550 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:12,550 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:12,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:12,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:12,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:12,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:12,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 16:11:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:12,556 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:12,556 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:12,556 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:12,556 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:12,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:12,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:12,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:12,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:12,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:12,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:12,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 16:11:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:12,563 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:12,563 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:12,563 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:12,563 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:12,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:12,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:12,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:12,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:12,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:12,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:12,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:12,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:12,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 16:11:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:12,569 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:12,569 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:12,570 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:12,570 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:12,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:12,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:12,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:12,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:12,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-24 16:11:12,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934527507] [2020-09-24 16:11:12,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:12,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 16:11:12,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143132206] [2020-09-24 16:11:12,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 16:11:12,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:12,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 16:11:12,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:11:12,581 INFO L87 Difference]: Start difference. First operand 326 states and 378 transitions. Second operand 11 states. [2020-09-24 16:11:12,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:12,877 INFO L93 Difference]: Finished difference Result 363 states and 421 transitions. [2020-09-24 16:11:12,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 16:11:12,877 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-09-24 16:11:12,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:12,880 INFO L225 Difference]: With dead ends: 363 [2020-09-24 16:11:12,880 INFO L226 Difference]: Without dead ends: 361 [2020-09-24 16:11:12,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-24 16:11:12,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-09-24 16:11:12,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 355. [2020-09-24 16:11:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-09-24 16:11:12,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 412 transitions. [2020-09-24 16:11:12,899 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 412 transitions. Word has length 83 [2020-09-24 16:11:12,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:12,900 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 412 transitions. [2020-09-24 16:11:12,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 16:11:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 412 transitions. [2020-09-24 16:11:12,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-24 16:11:12,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:12,903 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:12,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 16:11:12,903 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:12,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:12,904 INFO L82 PathProgramCache]: Analyzing trace with hash -857748777, now seen corresponding path program 3 times [2020-09-24 16:11:12,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:12,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423929692] [2020-09-24 16:11:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:12,977 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:12,978 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:12,978 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:12,978 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:12,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 16:11:12,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:12,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 16:11:12,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:12,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 16:11:12,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:11:12,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-24 16:11:12,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:13,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:13,242 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:13,242 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:13,242 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:13,242 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:13,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:13,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:13,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-24 16:11:13,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:13,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:13,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:13,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:13,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:13,247 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:13,247 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:13,248 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:13,248 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:13,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:13,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:13,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:13,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:13,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:13,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:13,254 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:13,255 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:13,255 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:13,255 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:13,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:13,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:13,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:13,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:11:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:13,266 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:13,266 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:13,266 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:13,266 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:13,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:13,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:13,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:13,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:13,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 16:11:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:13,282 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:13,282 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:13,282 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:13,282 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:13,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:13,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:13,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 16:11:13,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:13,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:13,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:13,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 16:11:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:13,289 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:13,289 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:13,290 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:13,290 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:13,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:13,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:13,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:13,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:13,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:13,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 16:11:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:13,297 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:13,297 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:13,297 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:13,297 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:13,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:13,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:13,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:13,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:13,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:13,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-24 16:11:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:13,304 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:13,304 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:13,304 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:13,305 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:13,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:13,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:13,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:13,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:13,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-09-24 16:11:13,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423929692] [2020-09-24 16:11:13,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:13,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 16:11:13,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091198516] [2020-09-24 16:11:13,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 16:11:13,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:13,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 16:11:13,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:11:13,323 INFO L87 Difference]: Start difference. First operand 355 states and 412 transitions. Second operand 13 states. [2020-09-24 16:11:13,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:13,842 INFO L93 Difference]: Finished difference Result 362 states and 418 transitions. [2020-09-24 16:11:13,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 16:11:13,843 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2020-09-24 16:11:13,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:13,844 INFO L225 Difference]: With dead ends: 362 [2020-09-24 16:11:13,845 INFO L226 Difference]: Without dead ends: 204 [2020-09-24 16:11:13,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2020-09-24 16:11:13,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-09-24 16:11:13,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2020-09-24 16:11:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-24 16:11:13,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 232 transitions. [2020-09-24 16:11:13,859 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 232 transitions. Word has length 84 [2020-09-24 16:11:13,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:13,859 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 232 transitions. [2020-09-24 16:11:13,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 16:11:13,859 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 232 transitions. [2020-09-24 16:11:13,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 16:11:13,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:13,862 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:13,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-24 16:11:13,862 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:13,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:13,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1405253968, now seen corresponding path program 2 times [2020-09-24 16:11:13,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:13,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178043992] [2020-09-24 16:11:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:13,925 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:13,925 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:13,926 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:13,926 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:13,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 16:11:13,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:13,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 16:11:13,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:13,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 16:11:13,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:11:13,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 16:11:13,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:14,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:14,237 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:14,237 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:14,238 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:14,238 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:14,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:14,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:14,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:14,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:14,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:14,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:14,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:14,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:14,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:14,246 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:14,247 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:14,247 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:14,247 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:14,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:14,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:14,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:14,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:14,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:14,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:14,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:14,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:14,256 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:14,256 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:14,257 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:14,257 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:14,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:14,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:14,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:14,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:14,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:14,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 16:11:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:14,268 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:14,268 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:14,269 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:14,269 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:14,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:14,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:14,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:11:14,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:14,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:14,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:14,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:14,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:14,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 16:11:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:14,279 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:14,279 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:14,279 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:14,280 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:14,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:14,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:14,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:11:14,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:14,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:14,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 16:11:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:14,303 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:14,303 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:14,304 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:14,304 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:14,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:14,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:14,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:11:14,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:14,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:14,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:14,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 16:11:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:14,316 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:14,317 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:14,317 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:14,317 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:14,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:14,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:14,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:11:14,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:14,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:14,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:14,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:14,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:14,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 16:11:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:14,326 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:14,326 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:14,326 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:14,327 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:14,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:14,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:14,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:14,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:14,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:14,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:14,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:14,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-24 16:11:14,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178043992] [2020-09-24 16:11:14,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:14,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 16:11:14,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200575489] [2020-09-24 16:11:14,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 16:11:14,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:14,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 16:11:14,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:11:14,353 INFO L87 Difference]: Start difference. First operand 204 states and 232 transitions. Second operand 13 states. [2020-09-24 16:11:15,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:15,027 INFO L93 Difference]: Finished difference Result 237 states and 272 transitions. [2020-09-24 16:11:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 16:11:15,029 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-09-24 16:11:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:15,031 INFO L225 Difference]: With dead ends: 237 [2020-09-24 16:11:15,032 INFO L226 Difference]: Without dead ends: 232 [2020-09-24 16:11:15,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2020-09-24 16:11:15,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-24 16:11:15,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 228. [2020-09-24 16:11:15,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-09-24 16:11:15,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 261 transitions. [2020-09-24 16:11:15,044 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 261 transitions. Word has length 88 [2020-09-24 16:11:15,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:15,044 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 261 transitions. [2020-09-24 16:11:15,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 16:11:15,045 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 261 transitions. [2020-09-24 16:11:15,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-24 16:11:15,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:15,046 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:15,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-24 16:11:15,047 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:15,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:15,047 INFO L82 PathProgramCache]: Analyzing trace with hash 813915649, now seen corresponding path program 1 times [2020-09-24 16:11:15,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:15,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118741094] [2020-09-24 16:11:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,084 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,084 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,085 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,085 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-24 16:11:15,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 16:11:15,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:11:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:11:15,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-24 16:11:15,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,192 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,192 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,192 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,193 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:15,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-24 16:11:15,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:15,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,197 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,197 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,197 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,197 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,202 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,203 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,203 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,203 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 16:11:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,209 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,209 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,210 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,210 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 16:11:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,216 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,216 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,216 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,217 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 16:11:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,222 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,223 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,223 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,223 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 16:11:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,231 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,231 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,231 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,232 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:15,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 16:11:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,239 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,239 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,239 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,240 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:11:15,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 16:11:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,247 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,247 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,247 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,247 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-24 16:11:15,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118741094] [2020-09-24 16:11:15,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:15,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 16:11:15,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955095319] [2020-09-24 16:11:15,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 16:11:15,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:15,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 16:11:15,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:11:15,287 INFO L87 Difference]: Start difference. First operand 228 states and 261 transitions. Second operand 13 states. [2020-09-24 16:11:15,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:15,691 INFO L93 Difference]: Finished difference Result 273 states and 314 transitions. [2020-09-24 16:11:15,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 16:11:15,691 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 97 [2020-09-24 16:11:15,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:15,693 INFO L225 Difference]: With dead ends: 273 [2020-09-24 16:11:15,694 INFO L226 Difference]: Without dead ends: 271 [2020-09-24 16:11:15,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-09-24 16:11:15,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-09-24 16:11:15,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 262. [2020-09-24 16:11:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-24 16:11:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 301 transitions. [2020-09-24 16:11:15,705 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 301 transitions. Word has length 97 [2020-09-24 16:11:15,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:15,706 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 301 transitions. [2020-09-24 16:11:15,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 16:11:15,706 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 301 transitions. [2020-09-24 16:11:15,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-24 16:11:15,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:15,708 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:15,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-24 16:11:15,708 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:15,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:15,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1992677655, now seen corresponding path program 2 times [2020-09-24 16:11:15,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:15,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304818647] [2020-09-24 16:11:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,740 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,740 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,740 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,741 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-24 16:11:15,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 16:11:15,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:11:15,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:11:15,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-24 16:11:15,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,848 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,848 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,848 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,848 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:15,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,853 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,853 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,853 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,854 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,859 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,859 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,859 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,859 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 16:11:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,864 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,865 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,865 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,865 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 16:11:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,870 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,871 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,871 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,871 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 16:11:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,877 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,877 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,877 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,878 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 16:11:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,883 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,883 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,883 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,884 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 16:11:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,889 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,890 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,890 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,890 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-24 16:11:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:15,896 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:15,896 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:15,896 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:15,897 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:15,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:15,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:15,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:15,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:15,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:15,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:15,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:15,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-24 16:11:15,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304818647] [2020-09-24 16:11:15,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:15,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 16:11:15,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077283880] [2020-09-24 16:11:15,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 16:11:15,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:15,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 16:11:15,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:11:15,909 INFO L87 Difference]: Start difference. First operand 262 states and 301 transitions. Second operand 13 states. [2020-09-24 16:11:16,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:16,369 INFO L93 Difference]: Finished difference Result 307 states and 354 transitions. [2020-09-24 16:11:16,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 16:11:16,369 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 97 [2020-09-24 16:11:16,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:16,373 INFO L225 Difference]: With dead ends: 307 [2020-09-24 16:11:16,373 INFO L226 Difference]: Without dead ends: 305 [2020-09-24 16:11:16,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-09-24 16:11:16,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-09-24 16:11:16,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 266. [2020-09-24 16:11:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-24 16:11:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 304 transitions. [2020-09-24 16:11:16,392 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 304 transitions. Word has length 97 [2020-09-24 16:11:16,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:16,393 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 304 transitions. [2020-09-24 16:11:16,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 16:11:16,393 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 304 transitions. [2020-09-24 16:11:16,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-24 16:11:16,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:16,396 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:16,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-24 16:11:16,396 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:16,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:16,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1735264553, now seen corresponding path program 2 times [2020-09-24 16:11:16,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:16,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325836817] [2020-09-24 16:11:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:16,466 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:16,466 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:16,467 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:16,467 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:16,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-24 16:11:16,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:16,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 16:11:16,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 16:11:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:11:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-24 16:11:16,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:16,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:16,652 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:16,653 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:16,653 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:16,653 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:16,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:16,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:16,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:16,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:16,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:16,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:16,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:16,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:16,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:16,658 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:16,658 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:16,658 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:16,658 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:16,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:16,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:16,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:16,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:16,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:16,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:16,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:16,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:16,664 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:16,664 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:16,665 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:16,665 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:16,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:16,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:16,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:16,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:16,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:16,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:16,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:16,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:16,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 16:11:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:16,671 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:16,671 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:16,671 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:16,671 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:16,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:16,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:16,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:16,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:16,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:16,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 16:11:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:16,678 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:16,679 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:16,679 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:16,679 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:16,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:16,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:16,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:16,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:16,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:16,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:16,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 16:11:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:16,688 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:16,688 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:16,688 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:16,689 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:16,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:16,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:16,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:16,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:16,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:16,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:16,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 16:11:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:16,696 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:16,696 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:16,697 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:16,697 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:16,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:16,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:16,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:16,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:16,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:16,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 16:11:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:16,704 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:16,705 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:16,705 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:16,705 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:16,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:16,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:16,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:16,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:16,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:16,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:16,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 16:11:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:16,713 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:16,713 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:16,714 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:16,714 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:16,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:16,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:16,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:16,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:16,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:16,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 16:11:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:16,722 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:16,722 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:16,723 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:16,723 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:16,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:16,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:16,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:16,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:16,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-09-24 16:11:16,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325836817] [2020-09-24 16:11:16,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:16,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 16:11:16,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018894398] [2020-09-24 16:11:16,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 16:11:16,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:16,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 16:11:16,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:11:16,759 INFO L87 Difference]: Start difference. First operand 266 states and 304 transitions. Second operand 10 states. [2020-09-24 16:11:17,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:17,117 INFO L93 Difference]: Finished difference Result 281 states and 319 transitions. [2020-09-24 16:11:17,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 16:11:17,118 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-09-24 16:11:17,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:17,120 INFO L225 Difference]: With dead ends: 281 [2020-09-24 16:11:17,121 INFO L226 Difference]: Without dead ends: 279 [2020-09-24 16:11:17,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-09-24 16:11:17,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-24 16:11:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 271. [2020-09-24 16:11:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-24 16:11:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 309 transitions. [2020-09-24 16:11:17,134 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 309 transitions. Word has length 99 [2020-09-24 16:11:17,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:17,135 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 309 transitions. [2020-09-24 16:11:17,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 16:11:17,136 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 309 transitions. [2020-09-24 16:11:17,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-24 16:11:17,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:17,138 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:17,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-24 16:11:17,139 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:17,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:17,140 INFO L82 PathProgramCache]: Analyzing trace with hash 762056004, now seen corresponding path program 3 times [2020-09-24 16:11:17,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:17,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927431872] [2020-09-24 16:11:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:17,210 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:17,210 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:17,210 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:17,211 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:17,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 16:11:17,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:17,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 16:11:17,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 16:11:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:11:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 16:11:17,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:17,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:17,405 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:17,406 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:17,406 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:17,406 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:17,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:17,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:17,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:17,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:17,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:17,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:17,413 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:17,413 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:17,413 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:17,414 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:17,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:17,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:17,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:17,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:17,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:17,421 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:17,421 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:17,421 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:17,422 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:17,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:17,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:17,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:17,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:17,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:17,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:17,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 16:11:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:17,428 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:17,428 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:17,428 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:17,429 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:17,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:17,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:17,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:17,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:17,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:17,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:17,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:17,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:17,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 16:11:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:17,436 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:17,436 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:17,437 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:17,437 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:17,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:17,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:17,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:17,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:17,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 16:11:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:17,445 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:17,446 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:17,446 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:17,446 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:17,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:17,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:17,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:17,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:17,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:17,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 16:11:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:17,454 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:17,454 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:17,454 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:17,454 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:17,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:17,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:17,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:17,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:17,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:17,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:17,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:17,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:17,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 16:11:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:17,462 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:17,462 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:17,463 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:17,463 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:17,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:17,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:17,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:17,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:17,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:17,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:17,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:17,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:17,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 16:11:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:17,471 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:17,471 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:17,471 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:17,472 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:17,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:17,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:17,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:17,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:17,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:17,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:17,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:17,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:17,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-24 16:11:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:17,479 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:17,479 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:17,479 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:17,480 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:17,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:17,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:17,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:17,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:17,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:17,506 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-24 16:11:17,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927431872] [2020-09-24 16:11:17,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:17,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 16:11:17,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044693059] [2020-09-24 16:11:17,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 16:11:17,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:17,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 16:11:17,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:11:17,509 INFO L87 Difference]: Start difference. First operand 271 states and 309 transitions. Second operand 11 states. [2020-09-24 16:11:17,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:17,860 INFO L93 Difference]: Finished difference Result 277 states and 314 transitions. [2020-09-24 16:11:17,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 16:11:17,860 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-09-24 16:11:17,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:17,862 INFO L225 Difference]: With dead ends: 277 [2020-09-24 16:11:17,862 INFO L226 Difference]: Without dead ends: 169 [2020-09-24 16:11:17,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-09-24 16:11:17,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-24 16:11:17,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2020-09-24 16:11:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-09-24 16:11:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 185 transitions. [2020-09-24 16:11:17,872 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 185 transitions. Word has length 102 [2020-09-24 16:11:17,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:17,872 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 185 transitions. [2020-09-24 16:11:17,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 16:11:17,872 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 185 transitions. [2020-09-24 16:11:17,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-24 16:11:17,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:17,874 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:17,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-24 16:11:17,874 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:17,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:17,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1826698420, now seen corresponding path program 4 times [2020-09-24 16:11:17,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:17,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982637141] [2020-09-24 16:11:17,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:17,920 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:17,920 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:17,921 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:17,921 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:17,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 16:11:17,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:17,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 16:11:17,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 16:11:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:11:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-24 16:11:17,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,051 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,051 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,051 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,052 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:18,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-24 16:11:18,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:18,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,056 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,056 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,056 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,056 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,061 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,062 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,062 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,062 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 16:11:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,067 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,067 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,068 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,068 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 16:11:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,073 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,073 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,074 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,074 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 16:11:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,079 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,080 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,080 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,080 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 16:11:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,087 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,087 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,087 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,087 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 16:11:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,092 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,093 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,093 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,093 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 16:11:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,098 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,098 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,099 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,099 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-24 16:11:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,105 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,105 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,105 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,105 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-24 16:11:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,111 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,112 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,112 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,112 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-09-24 16:11:18,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982637141] [2020-09-24 16:11:18,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:18,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-24 16:11:18,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085510978] [2020-09-24 16:11:18,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 16:11:18,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:18,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 16:11:18,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:11:18,129 INFO L87 Difference]: Start difference. First operand 169 states and 185 transitions. Second operand 15 states. [2020-09-24 16:11:18,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:18,556 INFO L93 Difference]: Finished difference Result 209 states and 233 transitions. [2020-09-24 16:11:18,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 16:11:18,557 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 115 [2020-09-24 16:11:18,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:18,559 INFO L225 Difference]: With dead ends: 209 [2020-09-24 16:11:18,559 INFO L226 Difference]: Without dead ends: 141 [2020-09-24 16:11:18,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2020-09-24 16:11:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-09-24 16:11:18,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2020-09-24 16:11:18,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-24 16:11:18,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2020-09-24 16:11:18,567 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 115 [2020-09-24 16:11:18,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:18,568 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2020-09-24 16:11:18,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 16:11:18,568 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2020-09-24 16:11:18,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-24 16:11:18,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:18,570 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:18,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-24 16:11:18,570 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:18,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:18,571 INFO L82 PathProgramCache]: Analyzing trace with hash -979894884, now seen corresponding path program 5 times [2020-09-24 16:11:18,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:18,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735369100] [2020-09-24 16:11:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,616 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,616 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,617 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,617 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 16:11:18,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 16:11:18,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 16:11:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 16:11:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-24 16:11:18,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,753 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,753 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,753 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,755 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:18,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:18,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:18,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:11:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,760 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,760 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,760 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,761 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:11:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,766 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,766 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,767 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,767 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 16:11:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,772 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,772 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,773 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 16:11:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,778 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,778 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,778 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,778 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 16:11:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,783 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,784 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,784 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,784 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 16:11:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,793 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,794 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,794 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,794 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:11:18,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 16:11:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,799 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,800 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,800 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,800 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 16:11:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,806 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,807 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,807 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,807 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 16:11:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,814 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,814 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,815 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,815 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-24 16:11:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:18,820 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:18,820 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:18,820 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:18,820 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:18,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:11:18,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:18,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:18,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:18,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:11:18,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:18,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:11:18,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-09-24 16:11:18,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735369100] [2020-09-24 16:11:18,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:18,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-24 16:11:18,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461235583] [2020-09-24 16:11:18,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 16:11:18,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:18,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 16:11:18,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:11:18,839 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand 15 states. [2020-09-24 16:11:19,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:19,238 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2020-09-24 16:11:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 16:11:19,238 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 115 [2020-09-24 16:11:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:19,239 INFO L225 Difference]: With dead ends: 145 [2020-09-24 16:11:19,240 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:11:19,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2020-09-24 16:11:19,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:11:19,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:11:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:11:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:11:19,242 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 115 [2020-09-24 16:11:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:19,243 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:11:19,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 16:11:19,243 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:11:19,243 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:11:19,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-24 16:11:19,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:11:20,234 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 16:11:20,234 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:11:20,234 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:11:20,234 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 16:11:20,235 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 16:11:20,235 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:11:20,235 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:20,235 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:20,235 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 16:11:20,237 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 16:11:20,237 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:20,237 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-24 16:11:20,237 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 16:11:20,238 INFO L268 CegarLoopResult]: For program point L60-1(line 60) no Hoare annotation was computed. [2020-09-24 16:11:20,238 INFO L268 CegarLoopResult]: For program point L27-1(lines 27 29) no Hoare annotation was computed. [2020-09-24 16:11:20,238 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-24 16:11:20,238 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 66) no Hoare annotation was computed. [2020-09-24 16:11:20,238 INFO L268 CegarLoopResult]: For program point L27-3(line 27) no Hoare annotation was computed. [2020-09-24 16:11:20,238 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-24 16:11:20,239 INFO L268 CegarLoopResult]: For program point L44-1(lines 44 53) no Hoare annotation was computed. [2020-09-24 16:11:20,239 INFO L268 CegarLoopResult]: For program point L44-2(line 44) no Hoare annotation was computed. [2020-09-24 16:11:20,239 INFO L268 CegarLoopResult]: For program point L44-4(line 44) no Hoare annotation was computed. [2020-09-24 16:11:20,240 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-24 16:11:20,240 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-09-24 16:11:20,240 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 16:11:20,240 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-24 16:11:20,240 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-24 16:11:20,241 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (and (<= 1 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-09-24 16:11:20,241 INFO L264 CegarLoopResult]: At program point L45-1(line 45) the Hoare annotation is: (and (<= 1 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-09-24 16:11:20,242 INFO L264 CegarLoopResult]: At program point L37-2(lines 37 61) the Hoare annotation is: (and (<= 1 main_~t~0) (or (= main_~tagbuf_len~0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0))) [2020-09-24 16:11:20,243 INFO L264 CegarLoopResult]: At program point L37-3(lines 37 61) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-09-24 16:11:20,243 INFO L264 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: (and (<= 0 main_~tagbuf_len~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-09-24 16:11:20,243 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 33) the Hoare annotation is: (let ((.cse0 (< main_~t~0 (+ main_~tagbuf_len~0 1)))) (or (and (= main_~t~0 0) .cse0) (and .cse0 (<= 1 main_~t~0)))) [2020-09-24 16:11:20,244 INFO L264 CegarLoopResult]: At program point L21-3(lines 21 33) the Hoare annotation is: (let ((.cse0 (<= (+ main_~t~0 1) main_~tagbuf_len~0))) (or (and (= main_~t~0 0) .cse0) (and (<= 1 main_~t~0) .cse0))) [2020-09-24 16:11:20,244 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 16:11:20,244 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 66) no Hoare annotation was computed. [2020-09-24 16:11:20,244 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-09-24 16:11:20,244 INFO L271 CegarLoopResult]: At program point L63(lines 14 66) the Hoare annotation is: true [2020-09-24 16:11:20,245 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (<= (+ main_~t~0 1) main_~tagbuf_len~0))) (or (and (= main_~t~0 0) .cse0) (and (<= 1 main_~t~0) .cse0))) [2020-09-24 16:11:20,245 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 66) the Hoare annotation is: true [2020-09-24 16:11:20,245 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse0 (<= (+ main_~t~0 1) main_~tagbuf_len~0))) (or (and (= main_~t~0 0) .cse0) (and (<= 1 main_~t~0) .cse0))) [2020-09-24 16:11:20,245 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-24 16:11:20,246 INFO L268 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-09-24 16:11:20,246 INFO L268 CegarLoopResult]: For program point L55-1(lines 55 57) no Hoare annotation was computed. [2020-09-24 16:11:20,246 INFO L268 CegarLoopResult]: For program point L55-2(line 55) no Hoare annotation was computed. [2020-09-24 16:11:20,246 INFO L268 CegarLoopResult]: For program point L55-3(line 55) no Hoare annotation was computed. [2020-09-24 16:11:20,246 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-24 16:11:20,246 INFO L268 CegarLoopResult]: For program point L47-1(line 47) no Hoare annotation was computed. [2020-09-24 16:11:20,247 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-24 16:11:20,247 INFO L264 CegarLoopResult]: At program point L39-1(line 39) the Hoare annotation is: (<= main_~t~0 main_~tagbuf_len~0) [2020-09-24 16:11:20,247 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 16:11:20,248 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-24 16:11:20,248 INFO L264 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: (<= main_~t~0 main_~tagbuf_len~0) [2020-09-24 16:11:20,248 INFO L268 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2020-09-24 16:11:20,248 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 16:11:20,248 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-24 16:11:20,249 INFO L264 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-09-24 16:11:20,249 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 16:11:20,251 INFO L264 CegarLoopResult]: At program point L49-1(line 49) the Hoare annotation is: (<= main_~t~0 main_~tagbuf_len~0) [2020-09-24 16:11:20,251 INFO L264 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (<= 1 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-09-24 16:11:20,251 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 16:11:20,251 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 16:11:20,251 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 16:11:20,252 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (<= (+ main_~t~0 1) main_~tagbuf_len~0))) (or (and (= main_~t~0 0) .cse0) (and (<= 1 main_~t~0) .cse0))) [2020-09-24 16:11:20,252 INFO L268 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-09-24 16:11:20,252 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 16:11:20,252 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 16:11:20,252 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-24 16:11:20,253 INFO L268 CegarLoopResult]: For program point L43-1(lines 43 57) no Hoare annotation was computed. [2020-09-24 16:11:20,253 INFO L268 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2020-09-24 16:11:20,254 INFO L268 CegarLoopResult]: For program point L43-3(line 43) no Hoare annotation was computed. [2020-09-24 16:11:20,254 INFO L264 CegarLoopResult]: At program point L43-4(lines 43 57) the Hoare annotation is: (and (<= 1 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-09-24 16:11:20,254 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 16:11:20,254 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 16:11:20,254 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 16:11:20,255 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 16:11:20,255 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 16:11:20,255 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 16:11:20,255 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 16:11:20,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:11:20 BoogieIcfgContainer [2020-09-24 16:11:20,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:11:20,295 INFO L168 Benchmark]: Toolchain (without parser) took 17375.52 ms. Allocated memory was 140.0 MB in the beginning and 418.4 MB in the end (delta: 278.4 MB). Free memory was 103.2 MB in the beginning and 171.4 MB in the end (delta: -68.2 MB). Peak memory consumption was 210.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:20,299 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 16:11:20,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.77 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:20,305 INFO L168 Benchmark]: Boogie Preprocessor took 112.44 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 181.4 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:20,305 INFO L168 Benchmark]: RCFGBuilder took 434.10 ms. Allocated memory is still 202.9 MB. Free memory was 181.4 MB in the beginning and 162.2 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:20,306 INFO L168 Benchmark]: TraceAbstraction took 16505.17 ms. Allocated memory was 202.9 MB in the beginning and 418.4 MB in the end (delta: 215.5 MB). Free memory was 161.6 MB in the beginning and 171.4 MB in the end (delta: -9.9 MB). Peak memory consumption was 205.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:20,309 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 314.77 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.44 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 181.4 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.10 ms. Allocated memory is still 202.9 MB. Free memory was 181.4 MB in the beginning and 162.2 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16505.17 ms. Allocated memory was 202.9 MB in the beginning and 418.4 MB in the end (delta: 215.5 MB). Free memory was 161.6 MB in the beginning and 171.4 MB in the end (delta: -9.9 MB). Peak memory consumption was 205.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 21]: Loop Invariant Derived loop invariant: (t == 0 && t < tagbuf_len + 1) || (t < tagbuf_len + 1 && 1 <= t) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 <= t && (tagbuf_len == t || t + 1 <= tagbuf_len) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.3s, OverallIterations: 28, TraceHistogramMax: 11, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2300 SDtfs, 1386 SDslu, 12912 SDs, 0 SdLazy, 5088 SolverSat, 536 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 822 GetRequests, 403 SyntacticMatches, 31 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=355occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 28 MinimizatonAttempts, 178 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 131 PreInvPairs, 215 NumberOfFragments, 198 HoareAnnotationTreeSize, 131 FomulaSimplifications, 6078 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 24 FomulaSimplificationsInter, 644 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 1890 NumberOfCodeBlocks, 1890 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1862 ConstructedInterpolants, 0 QuantifiedInterpolants, 403731 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 28 InterpolantComputations, 18 PerfectInterpolantSequences, 2025/2081 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...